Anette Hjartåker

• Uchai, Shreeshti; Andersen, Lene Frost; Thoresen, Magne; Hopstock, Laila Arnesdatter & Hjartåker, Anette (2024). Does the association between adiposity measures and pre-frailty among older adults vary by social position? Findings from the Tromsø study 2015/2016. BMC Public Health. ISSN 1471-2458. 24(1). doi: 10.1186/s12889-024-18939-3.
• Henriksen, Hege; Knudsen, Markus Dines; Hjartåker, Anette; Blomhoff, Rune & Carlsen, Monica Hauger (2024). Digital Food Frequency Questionnaire Assessing Adherence to the Norwegian Food-Based Dietary Guidelines and Other National Lifestyle Recommendations: Instrument Validation Study. Journal of Medical Internet Research. ISSN 1438-8871. 26. doi: 10.2196/53442.
• Vetlesen, Hanna Skorstad; Wik-Klokk, Merete; Wallace, Sean Ciaran; Rasmussen, Magnhild; Hjartåker, Anette & Nordstrøm, Marianne (2024). Nutritional status and dietary intake in children and adolescents with spinal muscular atrophy types II and III on treatment with nusinersen. Clinical Nutrition Open Science. ISSN 2667-2685. 53, s. 57–67. doi: 10.1016/j.nutos.2023.12.005.
• Sabir, Zoya; Hjartåker, Anette; Dierkes, Jutta & Rosendahl-Riise, Hanne (2023). The Association of Isocaloric Substitution of Dietary Protein in Middle Age with Muscle Mass and Strength in Old Age: The Hordaland Health Study. Current Developments in Nutrition (CDN). ISSN 2475-2991. 8(1). doi: 10.1016/j.cdnut.2023.102052. Fulltekst i vitenarkiv
• Sabir, Zoya; Dierkes, Jutta; Hjartåker, Anette & Rosendahl-Riise, Hanne (2023). The association of dietary patterns with muscle mass and strength in old age: The Hordaland Health Study. European Journal of Nutrition. ISSN 1436-6207. 62, s. 2739–2750. doi: 10.1007/s00394-023-03206-9. Fulltekst i vitenarkiv
• Konglevoll, Dina Moxness; Andersen, Lene Frost; Hopstock, Laila Arnesdatter; Strand, Bjørn Heine; Thoresen, Magne & Totland, Torunn Holm [Vis alle 8 forfattere av denne artikkelen] (2023). Fish intake and pre-frailty in Norwegian older adults - a prospective cohort study: the Tromsø Study 1994–2016. BMC Geriatrics. ISSN 1471-2318. 23(1). doi: 10.1186/s12877-023-04081-z. Fulltekst i vitenarkiv
• Kværner, Ane Sørlie; Andersen, Astrid Riseth; Henriksen, Hege Berg; Knudsen, Markus Dines; Johansen, Anne Marte Wetting & Hjartåker, Anette [Vis alle 13 forfattere av denne artikkelen] (2023). Associations of the 2018 World Cancer Research Fund/American Institute of Cancer Research (WCRF/AICR) cancer prevention recommendations with stages of colorectal carcinogenesis. Cancer Medicine. ISSN 2045-7634. 12(13), s. 14806–14819. doi: 10.1002/cam4.6119. Fulltekst i vitenarkiv Vis sammendrag

  Background: While adherence to cancer prevention recommendations is linked to lower risk of colorectal cancer (CRC), few have studied associations across the entire spectrum of colorectal carcinogenesis. Here, we studied the relationship of the standardized 2018 World Cancer Research Fund/American Institute for Cancer Research (WCRF/AICR) Score for cancer prevention recommendations with detection of colorectal lesions in a screening setting. As a secondary objective, we examined to what extent the recommendations were being followed in an external cohort of CRC patients. Methods: Adherence to the seven-point 2018 WCRF/AICR Score was measured in screening participants receiving a positive fecal immunochemical test and in CRC patients participating in an intervention study. Dietary intake, body fatness and physical activity were assessed using self-administered questionnaires. Multinomial logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for screen-detected lesions. Results: Of 1486 screening participants, 548 were free from adenomas, 524 had non-advanced adenomas, 349 had advanced lesions and 65 had CRC. Adherence to the 2018 WCRF/AICR Score was inversely associated with advanced lesions; OR 0.82 (95% CI 0.71, 0.94) per score point, but not with CRC. Of the seven individual components included in the score, alcohol, and BMI seemed to be the most influential. Of the 430 CRC patients included in the external cohort, the greatest potential for lifestyle improvement was seen for the recommendations concerning alcohol and red and processed meat, where 10% and 2% fully adhered, respectively. Conclusions: Adherence to the 2018 WCRF/AICR Score was associated with lower probability of screen-detected advanced precancerous lesions, but not CRC. Although some components of the score seemed to be more influential than others (i.e., alcohol and BMI), taking a holistic approach to cancer prevention is likely the best way to prevent the occurrence of precancerous colorectal lesions.

• Karavasiloglou, Nena; Hughes, David J.; Murphy, Neil; Schomburg, Lutz; Sun, Qian & Seher, Vartiter [Vis alle 42 forfattere av denne artikkelen] (2023). Prediagnostic serum calcium concentrations and risk of colorectal cancer development in 2 large European prospective cohorts. American Journal of Clinical Nutrition. ISSN 0002-9165. 117(1), s. 33–45. doi: 10.1016/j.ajcnut.2022.10.004.
• Uchai, Shreeshti; Andersen, Lene Frost; Johansson, Jonas; Hopstock, Laila Arnesdatter & Hjartåker, Anette (2023). Dual-Energy X-Ray Absorptiometry Derived Adiposity Measures and Pre-Frailty/Frailty among Norwegian Adults: The Tromsø Study 2007–2015. The Journal of Nutrition, Health & Aging. ISSN 1279-7707. 27, s. 403–410. doi: 10.1007/s12603-023-1920-2. Fulltekst i vitenarkiv Vis sammendrag

  Objectives Aging is associated with changes in body composition. Excess adiposity among older adults has been linked with metabolic syndromes and aggravated age-associated decline in physical functioning. Few longitudinal studies have explored the association between dual-energy X-ray absorptiometry (DXA)-derived total as well as central adiposity measures and frailty. We examined the association of DXA-derived total and central adiposity with pre-frailty/frailty among Norwegian adults after 8 years of follow-up. Design Prospective observational study. Setting Community-dwelling adults from Tromsø, Norway. Measurements Adiposity was defined by fat mass index (FMI) and visceral adipose tissue (VAT) mass assessed using DXA measures. Frailty status was assessed by low grip strength, slow walking speed, exhaustion, unintentional weight loss and low physical activity level. Pre-frail and frail participants at baseline were excluded. Sex-stratified multivariable logistic regression models were used to investigate the association. Results Participants comprised 234 women (mean age 68 years) and 146 men (mean age 69 years) attending the population-based Tromsø Study in 2007–2008 (Tromsø6) and 2015–2016 (Tromsø7). At the end of follow-up, 25.6% of the women and 27.4% of the men were pre-frail/frail. Compared with women in the lowest tertiles, those in the highest tertile of baseline FMI (odds ratio [OR] 4.42, 95% confidence interval [CI] 1.88–10.35) and VAT mass (OR 2.47, 95% CI 1.10–5.50), respectively had higher odds for pre-frailty/frailty at follow-up. Conclusion We found a higher likelihood of pre-frailty/frailty in later years among women with general and central adiposity in adulthood, highlighting the importance of preventing excess adiposity for healthy aging.

• Uchai, Shreeshti; Andersen, Lene Frost; Hopstock, Laila Arnesdatter & Hjartåker, Anette (2023). Body mass index, waist circumference and pre-frailty/frailty: the Tromsø study 1994−2016. BMJ Open. ISSN 2044-6055. 13:e065707(2), s. 1–11. doi: 10.1136/bmjopen-2022-065707. Fulltekst i vitenarkiv
• Henriksen, Hege; Knudsen, Markus Dines; Carlsen, Monica Hauger; Hjartåker, Anette & Blomhoff, Rune (2022). A Short Digital Food Frequency Questionnaire (DIGIKOST-FFQ) Assessing Dietary Intake and Other Lifestyle Factors Among Norwegians: Qualitative Evaluation With Focus Group Interviews and Usability Testing. JMIR Formative Research. ISSN 2561-326X. 6(11). doi: 10.2196/35933. Fulltekst i vitenarkiv
• Sabir, Zoya; Rosendahl-Riise, Hanne; Dierkes, Jutta; Dahl, Helene & Hjartåker, Anette (2022). Comparison of dietary intake measured by a web-based FFQ and repeated 24-hour dietary recalls: the Hordaland Health Study. Journal of Nutritional Science (JNS). ISSN 2048-6790. 11, s. 1–10. doi: 10.1017/jns.2022.97. Fulltekst i vitenarkiv
• Brunvoll, Sonja Hjellegjerde; Nygaard, Anders Benteson; Ellingjord-Dale, Merete; Holland, Petter; Istre, Mette Stausland & Kalleberg, Karl Trygve [Vis alle 15 forfattere av denne artikkelen] (2022). Prevention of covid-19 and other acute respiratory infections with cod liver oil supplementation, a low dose vitamin D supplement: quadruple blinded, randomised placebo controlled trial. The BMJ. ISSN 1756-1833. 378. doi: 10.1136/bmj-2022-071245. Fulltekst i vitenarkiv Vis sammendrag

  Objective To determine if daily supplementation with cod liver oil, a low dose vitamin D supplement, in winter, prevents SARS-CoV-2 infection, serious covid-19, or other acute respiratory infections in adults in Norway. Design Quadruple blinded, randomised placebo controlled trial. Setting Norway, 10 November 2020 to 2 June 2021. Participants 34601 adults (aged 18-75 years), not taking daily vitamin D supplements. Intervention 5 mL/day of cod liver oil (10 µg of vitamin D, n=17278) or placebo (n=17323) for up to six months. Main outcome measures Four co-primary endpoints were predefined: the first was a positive SARS-CoV-2 test result determined by reverse transcriptase-quantitative polymerase chain reaction and the second was serious covid-19, defined as self-reported dyspnoea, admission to hospital, or death. Other acute respiratory infections were indicated by the third and fourth co-primary endpoints: a negative SARS-CoV-2 test result and self-reported symptoms. Side effects related to the supplementation were self-reported. The fallback method was used to handle multiple comparisons. Results Supplementation with cod liver oil was not associated with a reduced risk of any of the co-primary endpoints. Participants took the supplement (cod liver oil or placebo) for a median of 164 days, and 227 (1.31%) participants in the cod liver oil group and 228 (1.32%) participants in the placebo group had a positive SARS-CoV-2 test result (relative risk 1.00, multiple comparison adjusted confidence interval 0.82 to 1.22). Serious covid-19 was identified in 121 (0.70%) participants in the cod liver oil group and in 101 (0.58%) participants in the placebo group (1.20, 0.87 to 1.65). 8546 (49.46%) and 8565 (49.44%) participants in the cod liver oil and placebo groups, respectively, had ≥1 negative SARS-CoV-2 test results (1.00, 0.97 to 1.04). 3964 (22.94%) and 3834 (22.13%) participants in the cod liver oil and placebo groups, respectively, reported ≥1 acute respiratory infections (1.04, 0.97 to 1.11). Only low grade side effects were reported in the cod liver oil and placebo groups. Co nclusion Supplementation with cod liver oil in the winter did not reduce the incidence of SARS-CoV-2 infection, serious covid-19, or other acute respiratory infections compared with placebo. Trial registration ClinicalTrials.gov NCT04609423.

• Brunvoll, Sonja Hjellegjerde; Flote, Vidar Gordon; Halset, Eline Holli; Bertheussen, Gro Falkener; Skjerven, Helle & Lømo, Jon [Vis alle 8 forfattere av denne artikkelen] (2022). Normal and unusual days for dietary intake during the 12 months after a breast cancer diagnosis in women. European Journal of Nutrition. ISSN 1436-6207. 61, s. 3873–3885. doi: 10.1007/s00394-022-02925-9. Fulltekst i vitenarkiv Vis sammendrag

  Purpose There are several reasons to report days as being unusual with regard to dietary intake, including special occasions and celebrations. For breast cancer patients during the 12 month post-surgery period, unusual days may also include days that are affected by being a cancer patient. The aim of this study was to study dietary intake on “normal” and “unusual” days, and to study what is reported in “free text fields” of a food diary. Methods Women (n = 456), mean age 55.5 years newly diagnosed with invasive breast cancer (stage I/II) were included in this clinical study. “Normal” and “unusual” days in general, over time and during the week and weekends were studied using repeated administration of a 7-day pre-coded food diary. Results The breast cancer patients reported 26% of all days as unusual. The intake of energy, most nutrients, especially alcohol and sugar, red and processed meat, and sweets, cakes, and snacks was 5–126% higher, whereas intake of fiber, fruit and berries, vegetables, and dairy products was 7–17% lower on unusual than on normal days (P < 0.001). The same pattern was seen for normal/unusual days during the weekdays, weekends and over time. Finally, 99% of the breast cancer patients used the free text fields to report additional intake with a mean energy of 1.1 MJ/day. Conclusion For breast cancer patients during the 12-month post-surgery period, unusual days are important drivers of total intake, especially for alcohol. The free text fields in the pre-coded food diary contributed substantially to the total intake.

• Kværner, Ane Sørlie; Birkeland, Einar Elvbakken; Vinberg, Elina; Hoff, Geir; Hjartåker, Anette & Rounge, Trine Ballestad [Vis alle 7 forfattere av denne artikkelen] (2022). Associations of red and processed meat intake with screen-detected colorectal lesions. British Journal of Nutrition. ISSN 0007-1145. s. 1–36. doi: 10.1017/S0007114522002860. Fulltekst i vitenarkiv Vis sammendrag

  Limited data exist regarding the role of meat consumption in early-stage colorectal carcinogenesis. We examined associations of red and processed meat intake with screen-detected colorectal lesions in immunochemical fecal occult blood test (FIT)-positive participants, enrolled in the Norwegian CRCbiome study during 2017-2021, aged 55-77 years. Absolute and energy-adjusted intakes of red and processed meat (combined and individually) were assessed using a validated, semiquantitative food frequency questionnaire. Associations between meat intake and screen-detected colorectal lesions were examined using multinomial logistic regression analyses with adjustment for key covariates. Of 1,162 participants with available dietary data, 319 (27%) presented with advanced colorectal lesions at colonoscopy. High vs low energy-adjusted intakes of red and processed meat combined, as well as red meat alone, were borderline to significantly positively associated with advanced colorectal lesions (ORs (95% CIs) of 1.24 (0.98, 1.57) and 1.34 (1.07, 1.69), respectively). A significant dose-response-relationship was also observed for absolute intake levels (OR (95% CI) of 1.32 (1.09, 1.60) per 100 g/day increase in red and processed meat). For processed meat, no association was observed between energy-adjusted intakes and advanced colorectal lesions. A significant positive association was, however, observed for the small proportion of participants (10%) with absolute intake levels ≥100 vs <50 g/day (OR (95% CI) of 1.19 (1.09, 1.31)). In summary, high intakes of red and processed meat were associated with presence of advanced colorectal lesions at colonoscopy in FIT-positive participants. The study demonstrates a potential role of using dietary data to improve the performance of FIT-based screening.

• Konglevoll, Dina Moxness; Hjartåker, Anette; Hopstock, Laila Arnesdatter; Strand, Bjørn Heine; Thoresen, Magne & Andersen, Lene Frost [Vis alle 7 forfattere av denne artikkelen] (2022). Protein Intake and the Risk of Pre-Frailty and Frailty in Norwegian Older Adults. The Tromsø Study 1994–2016. Journal of Frailty & Aging (JFA). ISSN 2260-1341. 11(3), s. 256–266. doi: 10.14283/jfa.2022.16. Fulltekst i vitenarkiv Vis sammendrag

  Background Protein intake is suggested as an important dietary factor in the prevention of frailty, however, the influence of lifelong intake remains unclear. Objectives The present study investigated the relationship between daily protein intake and patterns of protein intake over 21 years and the risk of pre-frailty/frailty. Design Prospective cohort study. Setting The population-based Tromsø Study in Tromsø municipality, Norway. Participants In total, 1,906 women and 1,820 men aged ≥45 years in 1994 who participated in both Tromsø4 (1994–95) and Tromsø7 (2015–16). Measurements Frailty status in Tromsø7 was measured according to Fried’s phenotype, classifying participants as “robust” (frailty components present: 0), “pre-frail” (1–2) or “frail” (≥3). Daily intake of protein was estimated from self-reported habitual dietary intake using food frequency questionnaires and assessed as grams per kilogram bodyweight (g/kg BW) and per megajoule energy intake (g/MJ). The protein–frailty association was assessed via longitudinal and cross-sectional multivariable logistic regression analyses. Results The prevalence of pre-frailty and frailty in this study was 27% and 1.0%, respectively. Longitudinal analysis showed that the odds of pre-frailty/frailty decreased by 57% (odds ratio (OR) = 0.43, 95% confidence interval (CI) = 0.31;0.58, p<0.001) with the increase in intake of one additional gram of dietary protein per kg BW. The results obtained from cross-sectional analysis were similar. Tracking analysis showed that, compared to a stable high intake of protein in g/kg BW over time, other patterns of protein intake increased the risk of pre-frailty/frailty. No associations were found between intake of protein in g/MJ and pre-frailty/frailty. Conclusions Intake of protein in g/kg BW both in mid-life and later in life was inversely associated with pre-frailty/frailty in older adults. This emphasizes the importance of an adequate protein intake to facilitate healthy ageing in Norwegian older adults.

• Knudsen, Markus Dines; Kværner, Ane Sørlie; Botteri, Edoardo; Holme, Øyvind; Hjartåker, Anette & Song, Mingyang [Vis alle 10 forfattere av denne artikkelen] (2022). Lifestyle predictors for inconsistent participation to fecal based colorectal cancer screening. BMC Cancer. ISSN 1471-2407. 22(172). doi: 10.1186/s12885-022-09287-9. Fulltekst i vitenarkiv Vis sammendrag

  Background: Consistent participation in colorectal cancer (CRC) screening with repeated fecal immunochemical test (FIT) is important for the success of the screening program. We investigated whether lifestyle risk factors for CRC were related to inconsistent participation in up to four rounds of FIT-screening. Method: We included data from 3,051 individuals who participated in up to four FIT-screening rounds and returned a lifestyle questionnaire. Using logistic regression analyses, we estimated associations between smoking habits, body mass index (BMI), physical activity, alcohol consumption, diet and a healthy lifestyle score (from least favorable 0 to most favorable 5), and inconsistent participation (i.e. not participating in all rounds of eligible FIT screening invitations). Results: Altogether 721 (24%) individuals were categorized as inconsistent participants Current smoking and BMI ≥30 kg/m2 were associated with inconsistent participation; odds ratios (ORs) and 95% confidence intervals (CIs) were 1.54 (1.21-2.95) and 1.54 (1.20-1.97), respectively. A significant trend towards inconsistent participation by a lower healthy lifestyle score was observed (p

• Carlsen, Monica Hauger; Andersen, Lene Frost & Hjartåker, Anette (2021). Reproducibility and feasibility of an online self-administered food frequency questionnaire for use among adult Norwegians. Food & Nutrition Research (FNR). ISSN 1654-6628. doi: 10.29219/fnr.v65.7561. Fulltekst i vitenarkiv
• Carlsen, Monica Hauger; Andersen, Lene F. & Hjartåker, Anette (2021). Reproducibility and feasibility of an online self-administered food frequency questionnaire for use among adult norwegians. Food & Nutrition Research (FNR). ISSN 1654-6628. 65, s. 1–14. doi: 10.29219/FNR.V65.7561.
• Kværner, Ane Sørlie; Birkeland, Einar Elvbakken; Bucher-Johannessen, Cecilie; Vinberg, Elina; Nordby, Jan Inge & Kangas, Harri [Vis alle 27 forfattere av denne artikkelen] (2021). The CRCbiome study: a large prospective cohort study examining the role of lifestyle and the gut microbiome in colorectal cancer screening participants. BMC Cancer. ISSN 1471-2407. 21. doi: 10.1186/s12885-021-08640-8. Fulltekst i vitenarkiv
• Bøhn, Siv Kjølsrud; Thune, Inger; Flote, Vidar Gordon; Frydenberg, Hanne; Bertheussen, Gro Falkener & Husøy, Anders [Vis alle 12 forfattere av denne artikkelen] (2021). Effects of a One-Year Physical Activity Intervention on Markers of Hemostasis among Breast Cancer Survivors - A Randomized Controlled Trial. TH Open. ISSN 2512-9465. 5(1), s. e14–e23. doi: 10.1055/s-0040-1721782. Fulltekst i vitenarkiv Vis sammendrag

  Introduction Physical activity may reduce the development of breast cancer. Whereas hypercoagulability has been linked to adverse outcomes in breast cancer patients, the effects of physical activity on their hemostatic factors are unknown. The study aimed to assess whether long-term (1 year) physical activity can affect hemostatic factors in breast cancer patients. Methods Fifty-five women (35–75 years) with invasive breast cancer stage I/II were randomized to a physical activity intervention (n = 29) lasting 1 year or to a control group (n = 26), and analyzed as intention to treat. Fibrinogen, factor VII antigen, tissue factor pathway inhibitor, and von Willebrand factor (VWF) antigen as well as prothrombin fragment 1 + 2, the endogenous thrombin potential and D-dimer, were measured in plasma before intervention (baseline), and then after 6 and 12 months. Results Maximal oxygen uptake (measure of cardiorespiratory fitness) decreased the first 6 months among the controls, but remained stable in the intervention group. We found no significant differences between the two study groups regarding any of the hemostatic factors, except a significantly higher increase in factor VII antigen in the intervention group. The effect of the intervention on VWF was, however, significantly affected by menopausal stage, and a significant effect of the intervention was found on VWF among postmenopausal women, even after adjustment for dietary intake. Conclusion Long-term physical activity had no effect on the majority of the hemostatic factors measured, but led to increased plasma concentrations of factor VII antigen and prevented an increase in VWF concentration after breast cancer treatment in postmenopausal women. The clinical impact of these findings for risk of vascular thrombosis warrants further studies.

• Knudsen, Markus Dines; Botteri, Edoardo; Holme, Øyvind; Hjartåker, Anette; Song, Mingyang & Thiis-Evensen, Espen [Vis alle 11 forfattere av denne artikkelen] (2020). Association between lifestyle and site-specific advanced colorectal lesions in screening with faecal immunochemical test and sigmoidoscopy. Digestive and Liver Disease. ISSN 1590-8658. s. 1–7. doi: 10.1016/j.dld.2020.11.021. Fulltekst i vitenarkiv Vis sammendrag

  Background: Lifestyle factors may help to identify individuals at high-risk for colorectal cancer (CRC). Aims: To examine the association between lifestyle, referral for follow-up colonoscopy and proximal neoplasia detection in CRC screening. Methods: In this observational study, 14,832 individuals aged 50-74 years were invited to faecal immunochemical test (FIT) or sigmoidoscopy screening. Advanced lesions (AL), including advanced adenomas, advanced serrated lesions and CRC were divided according to location: distal-only, or proximal with or without distal AL. We collected information on smoking habit, body mass index and alcohol intake through a questionnaire. Results: Out of 3,318 FIT and 2,988 sigmoidoscopy participants, 516 (16%) and 338 (11%), respectively, were referred for follow-up colonoscopy after a positive screening test. Two-hundred-and-fifty-six (4%) had distal-only and 119 (2%) proximal AL. In FIT participants, obesity and high alcohol intake were associated with proximal AL; odds ratio (95% confidence interval) 2.68 (1.36-5.26) and 2.16 (1.08-4.30), respectively. In sigmoidoscopy participants, current smoking was associated with proximal AL; 4.58 (2.24-9.38), and current smoking and obesity were associated with referral for colonoscopy; 2.80 (2.02-3.89) and 1.42 (1.01-2.00), respectively. Conclusion: Current smoking, obesity and high alcohol intake were associated with screen-detected proximal colorectal AL. Current smoking and obesity were associated with referral for follow-up colonoscopy in sigmoidoscopy screening.

• Brunvoll, Sonja Hjellegjerde; Thune, Inger; Bertheussen, Gro Falkener; Fjeldheim, Frøydis Nyborg; Flote, Vidar Gordon & Frydenberg, Hanne [Vis alle 13 forfattere av denne artikkelen] (2020). Dietary changes in early-stage breast cancer patients from pre-surgery and over the 12 months post-surgery. British Journal of Nutrition. ISSN 0007-1145. 125(2), s. 172–182. doi: 10.1017/S0007114520002627. Fulltekst i vitenarkiv Vis sammendrag

  The time after a breast cancer diagnosis is a potential period for making positive dietary changes, but previous results are conflicting. The main aim of the present study was to study breast cancer patients’ dietary changes during the 12 months post-surgery and from 12 months pre-surgery to 12 months post-surgery with repeated administration of a 7-d pre-coded food diary and an FFQ, respectively. Women (n 506), mean age 55·3 years diagnosed with invasive breast cancer (stages I and II), were included. The dietary intake was quite stable over time, but the intake was lower for energy (0·3 and 0·4 MJ/d), alcohol (1·9 and 1·5 g/d) and vegetables (17 and 22 g/d) at 6 months than 3 weeks post-surgery (food diary) and at 12 months post-surgery than pre-surgery (FFQ), respectively. Furthermore, energy percentage (E%) from carbohydrates increased between 0·8 and 1·2 E% and E% from fat decreased between 0·6 and 0·8 E% over time, measured by both dietary assessment methods. We observed a higher intake of dairy products (11 g/d) at 6 months post-surgery (food diary), and a lower intake of dairy products (34 g/d) and red and processed meat (7·2 g/d) at 12 months post-surgery (FFQ). Moreover, 24 % of the patients claimed they made dietary changes, but mostly they did not change their diet differently compared with those patients who claimed no changes. In conclusion, breast cancer patients reported only minor dietary changes from 12 months pre-surgery and during the 12 months post-surgery.

• Lundblad, Marie Wasmuth; Andersen, Lene Frost; Jacobsen, Bjarne Koster; Carlsen, Monica Hauger; Hjartåker, Anette & Grimsgaard, Sameline [Vis alle 7 forfattere av denne artikkelen] (2019). Energy and nutrient intakes in relation to National Nutrition Recommendations in a Norwegian population-based sample: the Tromsø Study 2015–16. Food & Nutrition Research (FNR). ISSN 1654-6628. 63:3616, s. 1–10. doi: 10.29219/fnr.v63.3616. Fulltekst i vitenarkiv
• Hanvold, Susanna; Vinknes, Kathrine; Løken, Elin Bjørge; Hjartåker, Anette; Klungsøyr, Ole & Birkeland, Eline [Vis alle 10 forfattere av denne artikkelen] (2019). Does Lifestyle Intervention After Gastric Bypass Surgery Prevent Weight Regain? A Randomized Clinical Trial. Obesity Surgery. ISSN 0960-8923. 29(11), s. 3419–3431. doi: 10.1007/s11695-019-04109-7. Fulltekst i vitenarkiv
• Johansen, Anne Marte Wetting; Myhre, Jannicke Borch; Hjartåker, Anette & Andersen, Lene Frost (2019). Validation of energy intake recorded by a 7-day pre-coded food diary against measured energy expenditure in a group of Norwegian adults. PLOS ONE. ISSN 1932-6203. 14(4), s. 1–12. doi: 10.1371/journal.pone.0215638. Fulltekst i vitenarkiv
• Ellingjord-Dale, Merete; Vos, Linda; Vik, Kirsti Lund; Hjartåker, Anette; Russnes, Hege Elisabeth Giercksky & Treti, Steinar [Vis alle 9 forfattere av denne artikkelen] (2018). Number of Risky Lifestyle Behaviors and Breast Cancer Risk . JNCI Cancer Spectrum. ISSN 2515-5091. 2(3). doi: 10.1093/jncics/pky030. Fulltekst i vitenarkiv
• Myhre, Jannicke Borch; Johansen, Anne Marte Wetting; Hjartåker, Anette & Andersen, Lene Frost (2018). Relative validation of a pre-coded food diary in a group of Norwegian adults - Comparison of underreporters and acceptable reporters. PLOS ONE. ISSN 1932-6203. 13(8). doi: 10.1371/journal.pone.0202907. Fulltekst i vitenarkiv Vis sammendrag

  Estimating dietary intake is important for both epidemiological and clinical studies. In large studies, a balance has to be achieved between methods with high accuracy and methods that are easy to use. The aim of the present study was to compare results from a pre-coded scanable food diary (PFD) with results from a weighed record (WR) in a group of Norwegian adults. We also explored differences in day-to-day energy intake and the distribution of energy intake across the day in acceptable reporters (ARs) and underreporters (URs). Participants (n = 114, mean age 35 years, 68% women) recorded dietary intake with the PFD for 7 consecutive days. One week after completing the PFD, participants completed a 7 days WR. No difference in mean energy intake was seen between methods. Few differences were seen for the macronutrients, the most noticeable difference being the percentage of energy (E%) from carbohydrates which was significantly lower with the PFD (47 E%) than with the WR (49 E%). For the micronutrients, intakes of calcium and vitamin A were both significantly higher with the PFD than with the WR. Pearson's correlation coefficient ranged from 0.47 (tocopherol) to 0.76 (E% carbohydrates) for all nutrients. Bread intake was significantly lower with the PFD while the intakes of edible fats, cheese and beverages were higher. Twenty-eight percent of the participants were found to be URs with the PFD. No clear pattern of underreporting at certain recording days or times of the day was seen. In conclusion, the results showed similar energy intakes and few differences in food and nutrient intakes between the PDF and the WR at the group level. Somewhat larger differences between the methods were seen at the individual level. Because of the reduced work load on both participants and researchers, the PFD seems a suitable alternative to the WR.

• Deschasaux, Mélanie; Huybrechts, Inge; Murphy, Neil; Julia, Chantal; Hercberg, Serge & Srour, Bernard [Vis alle 56 forfattere av denne artikkelen] (2018). Nutritional quality of food as represented by the FSAm-NPS nutrient profiling system underlying the Nutri-Score label and cancer risk in Europe: Results from the EPIC prospective cohort study. Nature Methods. ISSN 1548-7091. 15:e1002651(9), s. 1–21. doi: 10.1371/journal.pmed.1002651. Fulltekst i vitenarkiv
• Knudsen, Markus Dines; Hjartåker, Anette; Robb, Kathryn A.; de Lange, Thomas; Hoff, Geir & Berstad, Paula Marianna (2018). Improving Cancer Preventive Behaviors: A Randomized Trial of Tailored Lifestyle Feedback in Colorectal Cancer Screening. Cancer Epidemiology, Biomarkers and Prevention. ISSN 1055-9965. 27(12), s. 1442–1449. doi: 10.1158/1055-9965.EPI-18-0268. Fulltekst i vitenarkiv
• Brunvoll, Sonja Hjellegjerde; Thune, Inger; Frydenberg, Hanne; Flote, Vidar Gordon; Bertheussen, Gro Falkener & Schlichting, Ellen [Vis alle 8 forfattere av denne artikkelen] (2018). Validation of repeated self-reported n-3 PUFA intake using serum phospholipid fatty acids as a biomarker in breast cancer patients during treatment 11 Medical and Health Sciences 1112 Oncology and Carcinogenesis. Nutrition Journal. ISSN 1475-2891. 17:94, s. 1–12. doi: 10.1186/s12937-018-0402-6. Fulltekst i vitenarkiv
• Carlsen, Monica Hauger; Andersen, Lene Frost; Dahl, Lisbeth; Norberg, Nina & Hjartåker, Anette (2018). New iodine Food composition database and updated calculations of iodine intakes amongs Norwegians. Nutrients. ISSN 2072-6643. 10(7). doi: 10.3390/nu10070930. Fulltekst i vitenarkiv
• Banjari, Ines & Hjartåker, Anette (2018). Dietary sources of iron and vitamin B12: Is this the missing link in colorectal carcinogenesis? Medical Hypotheses. ISSN 0306-9877. 116, s. 105–110. doi: 10.1016/j.mehy.2018.05.003.
• Bakken, Toril; Braaten, Tonje; Olsen, Anja; Hjartåker, Anette; Lund, Eiliv & Skeie, Guri (2018). Milk and risk of colorectal, colon and rectal cancer in the Norwegian Women and Cancer (NOWAC) Cohort Study. British Journal of Nutrition. ISSN 0007-1145. 119(11), s. 1274–1285. doi: 10.1017/S0007114518000752. Fulltekst i vitenarkiv
• Knudsen, Markus Dines; Hjartåker, Anette; Olsen, Marie Kristin Ek; Hoff, Geir; de Lange, Thomas & Bernklev, Tomm [Vis alle 7 forfattere av denne artikkelen] (2018). Changes in health behavior 1 year after testing negative at a colorectal cancer screening: a randomized-controlled study. European Journal of Cancer Prevention. ISSN 0959-8278. 27(4), s. 316–322. doi: 10.1097/CEJ.0000000000000328.
• Ellingjord-Dale, Merete; Vos, Linda; Vik, Kirsti Lund; Hjartåker, Anette; Russnes, Hege Elisabeth Giercksky & Tretli, Steinar [Vis alle 9 forfattere av denne artikkelen] (2017). Alcohol, physical activity, smoking and breast cancer subtypes in a large nested case-control study from the Norwegian Breast Cancer Screening Program. Cancer Epidemiology, Biomarkers and Prevention. ISSN 1055-9965. 26(12), s. 1736–1744. doi: 10.1158/1055-9965.EPI-17-0611.
• Chajès, Véronique; Assi, Nada; Biessy, Carine; Ferrari, P.; Rinaldi, Sabina & Slimani, Nadia [Vis alle 35 forfattere av denne artikkelen] (2017). A prospective evaluation of plasma phospholipid fatty acids and breast cancer risk in the EPIC study. Annals of Oncology. ISSN 0923-7534. 28(11), s. 2836–2842. doi: 10.1093/annonc/mdx482. Fulltekst i vitenarkiv
• Botteri, Edoardo; Ferrari, Pietro; Roswall, Nina; Tjønneland, Anne; Hjartåker, Anette & Huerta, José María [Vis alle 26 forfattere av denne artikkelen] (2017). Alcohol consumption and risk of urothelial cell bladder cancer in the European prospective investigation into cancer and nutrition cohort. International Journal of Cancer. ISSN 0020-7136. 141(10), s. 1963–1970. doi: 10.1002/ijc.30894. Fulltekst i vitenarkiv
• Knudsen, Markus Dines; Berstad, Paula Marianna; Hjartåker, Anette; Gulichsen, Elisabeth Haagensen; Hoff, Geir & de Lange, Thomas [Vis alle 8 forfattere av denne artikkelen] (2017). Lifestyle predictors for non-participation and outcome in the second round of faecal immunochemical test in colorectal cancer screening . British Journal of Cancer. ISSN 0007-0920. 117(4), s. 461–469. doi: 10.1038/bjc.2017.189. Fulltekst i vitenarkiv
• Knudsen, Markus Dines; de Lange, Thomas; Botteri, Edoardo; Nguyen, Dung-Hong; Evensen, Helge & Steen, Chloe Beate [Vis alle 10 forfattere av denne artikkelen] (2016). Favorable lifestyle before diagnosis associated with lower risk of screen-detected advanced colorectal neoplasia. World Journal of Gastroenterology (WJG). ISSN 1007-9327. 22(27), s. 6276–6286. doi: 10.3748/wjg.v22.i27.6276.
• Zamora-Ros, Raul; Knaze, Viktoria; Rothwell, Joseph A.; Hémon, Bertrand; Moskal, Aurelie & Overvad, Kim [Vis alle 45 forfattere av denne artikkelen] (2016). Dietary polyphenol intake in europe: The european prospective investigation into cancer and nutrition (EPIC) study. European Journal of Nutrition. ISSN 1436-6207. 55(4), s. 1359–1375. doi: 10.1007/s00394-015-0950-x.
• Kyrø, Cecilie; Zamora-Ros, Raul; Scalbert, Augustin; Tjønneland, Anne; Dossus, Laure & Johansen, Christoffer [Vis alle 49 forfattere av denne artikkelen] (2015). Pre-diagnostic polyphenol intake and breast cancer survival: the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. Breast Cancer Research and Treatment. ISSN 0167-6806. 154(2), s. 389–401. doi: 10.1007/s10549-015-3595-9.
• Duarte-Salles, Talita; Fedirko, Veronika; Stepien, Magdalena; Aleksandrova, Krasimira; Bamia, Christina & Lagiou, Pagona [Vis alle 48 forfattere av denne artikkelen] (2015). Dietary fat, fat subtypes and hepatocellular carcinoma in a large European cohort. International Journal of Cancer. ISSN 0020-7136. 137(11), s. 2715–2728. doi: 10.1002/ijc.29643.
• Sen, Abhijit; Tsilidis, Konstantinos K.; Allen, Naomi E.; Rinaldi, Sabina; Appleby, Paul N. & Almquist, Martin [Vis alle 47 forfattere av denne artikkelen] (2015). Baseline and lifetime alcohol consumption and risk of differentiated thyroid carcinoma in the EPIC study. British Journal of Cancer. ISSN 0007-0920. 113(5), s. 840–847. doi: 10.1038/bjc.2015.280. Fulltekst i vitenarkiv
• Wozniak, Magdalena B.; Brennan, Paul; Brenner, Darren R.; Overvad, Kim; Olsen, Anja & Tjønneland, Anne [Vis alle 42 forfattere av denne artikkelen] (2015). Alcohol consumption and the risk of renal cancers in the European prospective investigation into cancer and nutrition (EPIC). International Journal of Cancer. ISSN 0020-7136. 137(8), s. 1953–1966. doi: 10.1002/ijc.29559.
• Frydenberg, Hanne; Flote, Vidar Gordon; Larsson, Ine Marie; Barrett, Emily S.; Furberg, Anne-Sofie & Ursin, Giske [Vis alle 12 forfattere av denne artikkelen] (2015). Alcohol consumption, endogenous estrogen and mammographic density among premenopausal women. Breast Cancer Research. ISSN 1465-5411. 17:103. doi: 10.1186/s13058-015-0620-1. Fulltekst i vitenarkiv
• Buonaccorsi, John P.; Dalen, Ingvild; Laake, Petter; Hjartåker, Anette; Engeset, Dagrun & Thoresen, Magne (2015). Sensitivity of regression calibration to non-perfect validation data with application to the Norwegian Women and Cancer Study. Statistics in Medicine. ISSN 0277-6715. 34(8), s. 1389–1403. doi: 10.1002/sim.6420.
• Rohrmann, Sabine; Linseisen, Jakob; Overvad, Kim; Würtz, Anne Mette Lund; Roswall, Nina & Tjønneland, Anne [Vis alle 45 forfattere av denne artikkelen] (2015). Meat and fish consumption and the risk of renal cell carcinoma in the European prospective investigation into cancer and nutrition. International Journal of Cancer. ISSN 0020-7136. 136(5), s. E423–E431. doi: 10.1002/ijc.29236.
• de Battle, J; Ferrari, P; Chajes, V; Park, JY; Slimani, N & Mckenzie, F [Vis alle 43 forfattere av denne artikkelen] (2015). Dietary folate intake and breast cancer risk: European prospective investigation into cancer and nutrition. Journal of the National Cancer Institute. ISSN 0027-8874. 107(1). doi: 10.1093/jnci/dju367.
• Merritt, Melissa A; Riboli, Elio; Weiderpass, Elisabete; Tsilidis, Konstantinos K.; Overvad, Kim & Tjønneland, Anne [Vis alle 43 forfattere av denne artikkelen] (2014). Dietary fat intake and risk of epithelial ovarian cancer in the European Prospective Investigation into Cancer and Nutrition. Cancer Epidemiology. ISSN 1877-7821. 38(5), s. 528–537. doi: 10.1016/j.canep.2014.07.011.
• Dik, Vincent K; Murphy, Neil; Siersema, Peter D; Fedirko, Veronika; Jenab, Mazda & Kong, So Y [Vis alle 45 forfattere av denne artikkelen] (2014). Prediagnostic intake of dairy products and dietary calcium and colorectal cancer survival-results from the EPIC cohort study. Cancer Epidemiology, Biomarkers and Prevention. ISSN 1055-9965. 23(9), s. 1813–1823. doi: 10.1158/1055-9965.EPI-14-0172.
• Moskal, Aurelie; Pisa, Pedro T; Ferrari, Pietro; Byrnes, Graham; Freisling, Heinz & Boutron-Ruault, Marie-Christine [Vis alle 46 forfattere av denne artikkelen] (2014). Nutrient patterns and their food sources in an international study setting: Report from the EPIC study. PLOS ONE. ISSN 1932-6203. 9(6). doi: 10.1371/journal.pone.0098647. Fulltekst i vitenarkiv
• Duarte-Salles, Talita; Fedirko, Veronika; Stepien, Magdalena; Trichopoulou, Antonia; Bamia, Christina & Lagiou, Pagona [Vis alle 46 forfattere av denne artikkelen] (2014). Dairy products and risk of hepatocellular carcinoma: The European Prospective Investigation into Cancer and Nutrition. International Journal of Cancer. ISSN 0020-7136. 135(7), s. 1662–1672. doi: 10.1002/ijc.28812.
• Hjartåker, Anette; Knudsen, Markus Dines; Tretli, Steinar & Weiderpass, Elisabete (2014). Consumption of berries, fruits and vegetables and mortality among 10,000 Norwegian men followed for four decades. European Journal of Nutrition. ISSN 1436-6207. doi: 10.1007/s00394-014-0741-9.
• Jakobsen, MU; Dethlefsen, C; Due, KM; May, AM; Romaguera, D & Vergnaud, AC [Vis alle 45 forfattere av denne artikkelen] (2013). Fish consumption and subsequent change in body weight in European women and men. British Journal of Nutrition. ISSN 0007-1145. 109(2), s. 353–362. doi: 10.1017/S0007114512001079.
• Zamora-Ros, R; Knaze, V; Lujan-Barroso, L; Romieu, I; Scalbert, A. & Slimani, N [Vis alle 45 forfattere av denne artikkelen] (2013). Differences in dietary intakes, food sources and determinants of total flavonoids between Mediterranean and non-Mediterranean countries participating in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. British Journal of Nutrition. ISSN 0007-1145. 109(8), s. 1498–1507. doi: 10.1017/S0007114512003273.
• Tørris, Christine; Thune, Inger; Emaus, Aina; Finstad, Sissi Espestvedt; Bye, Asta & Furberg, Anne-Sofie [Vis alle 10 forfattere av denne artikkelen] (2013). Duration of Lactation, Maternal Metabolic Profile, and Body Composition in the Norwegian EBBA I-Study. Breastfeeding Medicine. ISSN 1556-8253. 8(1), s. 8–15. doi: 10.1089/bfm.2012.0048. Fulltekst i vitenarkiv
• Buckland, G; Travier, N; Cottet, V; Gonzalez, C; Lujan-Barroso, L & Agudo, A [Vis alle 50 forfattere av denne artikkelen] (2013). Adherence to the mediterranean diet and risk of breast cancer in the European prospective investigation into cancer and nutrition cohort study. International Journal of Cancer. ISSN 0020-7136. 132(12), s. 2918–2927. doi: 10.1002/ijc.27958.
• Vermeulen, Esther; Zamora-Ros, Raul; Duell, Eric J.; Luján-Barroso, Leila; Boeing, Heiner & Aleksandrova, Krasimira [Vis alle 52 forfattere av denne artikkelen] (2013). Dietary flavonoid intake and esophageal cancer risk in the European prospective investigation into cancer and nutrition cohort. American Journal of Epidemiology. ISSN 0002-9262. 178(4), s. 570–581. doi: 10.1093/aje/kwt026.
• Robsahm, Trude Eid; Aagnes, Bjarte; Hjartåker, Anette; Langseth, Hilde; Bray, Freddie Ian & Larsen, Inger Kristin (2013). Body mass index, physical activity, and colorectal cancer by anatomical subsites: a systematic review and meta-analysis of cohort studies. European Journal of Cancer Prevention. ISSN 0959-8278. 22(6), s. 492–505. doi: 10.1097/CEJ.0b013e328360f434.
• Freisling, Heinz; Moskal, A; Ferrari, Pietro; Nicolas, Genevieve; Knaze, Viktoria & Clavel-Chapelon, Françoise [Vis alle 45 forfattere av denne artikkelen] (2013). Dietary acrylamide intake of adults in the European Prospective Investigation into Cancer and Nutrition differs greatly according to geographical region. European Journal of Nutrition. ISSN 1436-6207. 52(4), s. 1369–1380. doi: 10.1007/s00394-012-0446-x.
• Parr, Christine Louise; Hjartåker, Anette; Lund, Eiliv & Veierød, Marit Bragelien (2013). Meat intake, cooking methods and risk of proximal colon, distal colon and rectal cancer: The Norwegian Women and Cancer (NOWAC) cohort study. International Journal of Cancer. ISSN 0020-7136. 133(5), s. 1153–1163. doi: 10.1002/ijc.28101.
• Hjartåker, Anette; Aagnes, Bjarte; Robsahm, Trude Eid; Bray, Freddie Ian & Larsen, Inger Kristin (2013). Subsite-Specific Dietary Risk Factors for Colorectal Cancer: A Review of Cohort Studies. Journal of Oncology. ISSN 1687-8450. doi: 10.1155/2013/703854.

Se alle arbeider i Cristin

• Hjartåker, Anette; Pedersen, Jan Ivar; Müller, Hanne & Anderssen, Sigmund Alfred (2017). Grunnleggende ernæringslære. Gyldendal Norsk Forlag A/S. ISBN 9788205496934. 475 s. Vis sammendrag

  Grunnleggende ernæringslære er en basisbok om menneskets ernæring og kostens betydning for god helse.Det er lagt særlig vekt på betydningen av samspillet mellom kosthold og fysisk aktivitet for god helse. Teksten i denne tredje utgaven er oppdatert på sentrale områder i henhold til nyere forskningslitteratur. Boka er spesielt tilpasset norske forhold.Den henvender seg til en bred gruppe av studenter i universitets- og høyskolesektoren, blant annet innenfor medisin, ernæring, idrettsfag og fysioterapi og andre studentkategorier innenfor forebyggende og helsefremmende fagområder.Boka gir også et godt grunnlag for videre studier innenfor mer spesialiserte, tilgrensende områder som klinisk ernæring, samfunnsernæring og næringsmiddelteknologi.

Se alle arbeider i Cristin

• Knudsen, Markus Dines; Wang, Kai; Wang, Liang; Polychronidis, Georgios; Berstad, Paula & Hjartåker, Anette [Vis alle 10 forfattere av denne artikkelen] (2024). Colorectal cancer incidence and mortality after negative colonoscopy screening according to individuals’ risk profiles .
• Henriksen, Hege Berg; Carlsen, Monica Hauger; Knudsen, Markus Dines; Hjartåker, Anette & Blomhoff, Rune (2023). Digikost: A digital application for diet and lifestyle assessment and benchmarking against national guidelines. .
• Konglevoll, Dina Moxness; Andersen, Lene Frost; Hopstock, Laila Arnesdatter; Strand, Bjørn Heine; Thoresen, Magne & Totland, Torunn Holm [Vis alle 8 forfattere av denne artikkelen] (2023). Fish intake and pre-frailty in Norwegian older adults. A prospective cohort study: the Tromsø Study 1994-2016.
• Konglevoll, Dina Moxness; Hjartåker, Anette; Hopstock, Laila Arnesdatter; Strand, Bjørn Heine; Thoresen, Magne & Andersen, Lene Frost [Vis alle 7 forfattere av denne artikkelen] (2023). Proteininntak og skrøpelighet hos eldre deltagere i Tromsøundersøkelsen (1994–2016).
• Konglevoll, Dina Moxness; Andersen, Lene Frost; Hopstock, Laila Arnesdatter; Strand, Bjørn Heine; Thoresen, Magne & Totland, Torunn Holm [Vis alle 8 forfattere av denne artikkelen] (2023). Fiskeinntak of pre-skrøpelighet hos eldre deltagere i Tromsøundersøkelsen: et prospektivt studie (1994-2016).
• Konglevoll, Dina Moxness; Andersen, Lene Frost; Hopstock, Laila Arnesdatter; Strand, Bjørn Heine; Thoresen, Magne & Totland, Torunn Holm [Vis alle 8 forfattere av denne artikkelen] (2023). Fish intake and pre-frailty in Norwegian older adults. A prospective cohort: the Tromsø Study 1994-2016.
• Konglevoll, Dina Moxness; Andersen, Lene Frost; Hopstock, Laila Arnesdatter; Strand, Bjørn Heine; Thoresen, Magne & Totland, Torunn Holm [Vis alle 8 forfattere av denne artikkelen] (2023). Fish intake and pre-frailty in Norwegian older adults. A prospective cohort: the Tromsø Study 1994-2016.
• Sabir, Zoya; Dierkes, Jutta; Hjartåker, Anette; Dahl, Helene; Gerdts, Eva & Rosendahl-Riise, Hanne (2023). Dietary Intake And Adherence To Food-Based Dietary Guidelines In Older Norwegian Adults – The Hordaland Health Studies. Clinical Nutrition ESPEN. ISSN 2405-4577. 54, s. 612–612. doi: 10.1016/j.clnesp.2022.09.453.
• Hjartåker, Anette (2023). Anthropometric measures and physical frailty among older adults. The NutriFrail study.
• Hjartåker, Anette & Carlsen, Monica Hauger (2023). NutriFoodCalc (NFC) a new web-based food and nutrient calculation system.
• Uchai, Shreeshti; Andersen, Lene Frost; Johansson, Jonas Lars; Hopstock, Laila Arnesdatter & Hjartåker, Anette (2023). Dual-Energy X-Ray Absorptiometry Derived Adiposity Measures and Pre-Frailty/Frailty among Norwegian Adults: The Tromsø Study 2007–2015.
• Uchai, Shreeshti; Andersen, Lene Frost; Johansson, Jonas Lars; Hopstock, Laila Arnesdatter & Hjartåker, Anette (2023). Dual-Energy X-Ray Absorptiometry Derived Adiposity Measures and Pre-Frailty/Frailty among Norwegian Adults: The Tromsø Study 2007–2015.
• Knudsen, Markus Dines; Kai, Wang; Wang, Liang; Polychronidis, Georgios; Berstad, Paula & Hjartåker, Anette [Vis alle 10 forfattere av denne artikkelen] (2023). LONG-TERM INCIDENCE AND MORTALITY OF COLORECTAL CANCER AFTER NEGATIVE COLONOSCOPY SCREENING IN THREE U.S POPULATION-BASED COHORTS.
• Bjørndal, Bodil; Vildmyren, Iselin Thowsen; Aadland, Eli Kristin; Hjartåker, Anette; Djupegot, Ingrid Laukeland & Vatne, Julie Meinseth (2023). Er brød farlig no igjen? Bergens Tidende, Debattsider.
• Rustand Bruun, Dorthe Elise; Diab, Simone; Hjartåker, Anette; Almaas, Runar; Brunvand, Leif & Hansen, Kari Margrethe [Vis alle 7 forfattere av denne artikkelen] (2022). Vitamin D and calcium intake in children with Fontan circulation in relationship to vitamin D status and bone mineral density. Cardiology in the Young. ISSN 1047-9511.
• Konglevoll, Dina Moxness; Hjartåker, Anette; Hopstock, Laila Arnesdatter; Strand, Bjørn Heine; Thoresen, Magne & Andersen, Lene Frost [Vis alle 7 forfattere av denne artikkelen] (2022). Protein intake and the risk of pre-frailty/frailty in Norwegian older adults. The Tromsø Study 1994-2016.
• Konglevoll, Dina Moxness; Hjartåker, Anette; Hopstock, Laila Arnesdatter; Strand, Bjørn Heine; Thoresen, Magne & Andersen, Lene Frost [Vis alle 7 forfattere av denne artikkelen] (2022). Protein intake and the risk of pre-frailty/frailty in Norwegian older adults. The Tromsø Study 1994-2016.
• Konglevoll, Dina Moxness; Hjartåker, Anette; Hopstock, Laila Arnesdatter; Strand, Bjørn Heine; Thoresen, Magne & Andersen, Lene Frost [Vis alle 7 forfattere av denne artikkelen] (2022). Protein intake and the risk of pre-frailty/frailty in Norwegian older adults. The Tromsø Study 1994-2016.
• Konglevoll, Dina Moxness; Hjartåker, Anette; Hopstock, Laila Arnesdatter; Strand, Bjørn Heine; Thoresen, Magne & Andersen, Lene Frost [Vis alle 7 forfattere av denne artikkelen] (2022). Protein intake and the risk of pre-frailty/frailty in Norwegian older adults. The Tromsø Study 1994-2016.
• Uchai, Shreeshti; Andersen, Lene Frost; Hopstock, Laila Arnesdatter & Hjartåker, Anette (2022). Body Mass Index and Waist Circumference as predictors of Pre-frailty/frailty among older adults (Poster).
• Sabir, Zoya; Rosendahl-Riise, Hanne; Dierkes, Jutta; Dahl, Helene & Hjartåker, Anette (2021). Validation of a web-based food frequency questionnaire for dietary intake assessment in the Hordaland Health Study. Vis sammendrag

  Introduction: Valid assessment of dietary intake is essential when exploring associations between dietary factors and disease, as imprecise dietary intake data may reduce our understanding of such associations. All dietary assessment methods inevitably introduce measurement error to some extent, which ideally should be considered during data analysis and interpretation. Being aware of this, methodological studies should be conducted to address how well a given assessment method captures dietary intake, and to highlight the extent and direction of the measurement error. Aims: Within a sub-group of the community-based Hordaland Health Study (HUSK3), we conduct a validation study of an extensive web-based food-frequency questionnaire (web-FFQ) developed by the Department of Nutrition, University of Oslo. We compare dietary intake registered by the web-FFQ with dietary intake from repeat administrations of 24-hour dietary recall interviews (24-HDRs). Methods: The validation study is based on data from HUSK3 which included 2192 men and women born 1950-51. All HUSK3 participants were requested to complete the web-FFQ as a part of the health survey. For the present sub-study, 175 participants granted their consent to be contacted for repeated 24-HDRs via telephone. A total of 120 participants completed at least two 24-HDRs while 67 participants completed three 24-HDRs. Information on intake of foods, energy and nutrients was generated through Kostberegningssystemet (KBS), a software developed at the Department of Nutrition, University of Oslo. Results: Preliminary analyses in participants completing three 24-HDRs, show that intakes of energy, protein, fat, carbohydrates, fiber and micronutrients were higher in the FFQ than in the 24-HDRs. The FFQ overestimated the intakes of most food groups. Spearman’s rank correlation coefficient ranged from 0.17 (cakes) to 0.71 (juice) for foods, and from 0.19 (iodine) to 0.69 (vitamin D) for nutrients. Agreement of quartile membership indicated that foods eaten frequently were ranked quite similarly by both methods, while foods eaten infrequently were misclassified to a greater extent. Conclusion: The FFQ seemed to rank individuals well for foods consumed frequently, while ranking abilities were weaker for foods consumed less frequently. Ranking abilities of the FFQ varied within the category of macronutrients and micronutrients.

• Kværner, Ane Sørlie; Knudsen, Markus Dines; Hjartåker, Anette; Henriksen, Hege; Blomhoff, Rune & Hoff, Geir Svein [Vis alle 9 forfattere av denne artikkelen] (2021). Kost, livsstil og tarmscreening. Norsk tidsskrift for ernæring (NTFE). ISSN 1503-5034.
• Uchai, Shreeshti; Frost Andersen, Lene; Hopstock, Laila Arnesdatter & Hjartåker, Anette (2021). Body Mass Index and Waist Circumference as predictors of Pre-frailty/frailty among older adults.
• Milford, Anna Birgitte & Hjartåker, Anette (2018). Det norske kostholdet er ikke som det bør være. Hvem bør opplyse oss om sunn og bærekraftig mat? Aftenposten (morgenutg. : trykt utg.). ISSN 0804-3116.
• Knudsen, Markus Dines; Berstad, Paula Marianna; Hjartåker, Anette; Gulichsen, Elisabeth Haagensen; Hugin, Silje & Hoff, Geir [Vis alle 9 forfattere av denne artikkelen] (2017). People discontinuing colorectal cancer screening is properly the ones benefiting the most from screening.
• Ellingjord-Dale, Merete; Vos, Linda; Tretli, Steinar; Hofvind, Solveig; Hjartåker, Anette & G. Russnes, Hege [Vis alle 8 forfattere av denne artikkelen] (2017). Number of risky lifestyle behaviors and breast cancer subtypes in a large nested case-control study from Norway. Epidemiology. ISSN 1044-3983. doi: 10.1158/1538-7445.AM2017-2287.
• Knudsen, Markus Dines; Berstad, Paula Marianna; Hjartåker, Anette; Gulichsen, Elisabeth Haagensen; Hoff, Geir & de Lange, Thomas [Vis alle 8 forfattere av denne artikkelen] (2017). Lifestyle predictors for non-participation and outcome in the second round of faecal immunochemical test in colorectal cancer screening. Norsk Epidemiologi, Supplement. ISSN 0803-4206.
• Lundblad, Marie Wasmuth; Andersen, Lene Frost; Jacobsen, Bjarne K.; Carlsen, Monica Hauger; Hjartåker, Anette & Grimsgaard, Sameline [Vis alle 7 forfattere av denne artikkelen] (2017). Nutrient intake in the 7th survey of the Tromsø Study 2015-16, and comparison with Norwegian national dietary recommendations.
• Lundblad, Marie Wasmuth; Andersen, Lene Frost; Jacobsen, Bjarne K.; Carlsen, Monica Hauger; Hjartåker, Anette & Grimsgaard, Sameline [Vis alle 7 forfattere av denne artikkelen] (2017). Nutrient intake in the 7th survey of the Tromsø Study 2015-16, and comparison with Norwegian national dietary recommendations. Norsk Epidemiologi, Supplement. ISSN 0803-4206.
• Knudsen, Markus Dines; Hjartåker, Anette; Hoff, Geir; de Lange, Thomas; Bernklev, Tomm & Berstad, Paula Marianna (2016). Differences in health behavior at 1-year follow-up between attendees of two screening modalities having a negative screening test result, and controls. .
• Carlsen, Monica Hauger; Norberg, Nina & Hjartåker, Anette (2016). Assigning fatty acid composition to foods in a comprehensive nutrient calculation system (KBS).
• Knudsen, Markus Dines; Lange, Thomas de; Hjartåker, Anette & Berstad, Paula Marianna (2016). Association between colorectal cancer screening and health behavior at one-year follow-up, a randomized control study with two screening modalities.
• Hjartåker, Anette; Weiderpass, E & Bray, Freddie Ian (2016). Cancer Mortality. I Quah, Stella R. (Red.), International Encyclopedia of Public Health. Academic Press. ISSN 9780128036785. s. 369–380. doi: https:/doi.org/10.1016/B978-0-12-803678-5.00049-7.
• Knudsen, Markus Dines; Botteri, Edoardo; Steen, Chloe Beate; Hoff, Geir; Lange, Thomas de & Bernklev, Tomm [Vis alle 8 forfattere av denne artikkelen] (2015). Baseline lifestyle characteristics in participants in bowel cancer screening in Norway and in controls.
• Brunvoll, Sonja Hjellegjerde; Thune, Inger; Frydenberg, Hanne; Flote, Vidar Gordon; Therkildsen, Anette Farstad & Bjerve, Kristian S [Vis alle 7 forfattere av denne artikkelen] (2015). Repeated assessment of dietary data using food frequency questionnaires and 7-day food diaries and plasma phospholipid fatty acids.
• Løken, Elin Bjørge; Lund-Larsen, Kari; Solvoll, Kari & Hjartåker, Anette (2014). Historien om den norske matvaretabellen. Norsk tidsskrift for ernæring (NTFE). ISSN 1503-5034. 14(1), s. 20–26.

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