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Hailu, Fikadu Balcha; Moen, Anne & Hjortdahl, Per
(2019).
Diabetes Self-Management Education (DSME) – Effect on Knowledge, Self-Care Behavior, and Self-Efficacy Among Type 2 Diabetes Patients in Ethiopia: A Controlled Clinical Trial.
Diabetes, Metabolic Syndrome and Obesity.
ISSN 1178-7007.
12,
p. 2489–2499.
doi:
10.2147/DMSO.S223123.
Full text in Research Archive
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Brandrud, Aleidis Esther Skard; Bretthauer, Michael; Brattebø, Guttorm; Pedersen, May Janne Botha; Håpnes, Kent & Møller, Karin
[Show all 15 contributors for this article]
(2017).
Local emergency medical response after a terrorist attack in Norway: A qualitative study.
BMJ Quality and Safety.
ISSN 2044-5415.
26(10),
p. 806–816.
doi:
10.1136/bmjqs-2017-006517.
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Aarseth, Svein; Kongshavn, Trygve; Maartmann-Moe, Kjell & Hjortdahl, Per
(2016).
Papirløse migranter og norske allmennleger.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
136(10),
p. 911–913.
doi:
10.4045/tidsskr.14.1304.
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Ruud, Sven Eirik; Hjortdahl, Per & Natvig, Bård
(2016).
Is it a matter of urgency? A survey of assessments by walk-in patients and doctors of the urgency level of their encounters at a general emergency outpatient clinic in Oslo, Norway.
BMC Emergency Medicine.
ISSN 1471-227X.
16(22).
doi:
10.1186/s12873-016-0086-1.
Full text in Research Archive
Show summary
Background
Emergency room (ER) use is increasing in several countries. Variability in the proportion of non-urgent ER visits was found to range from 5 to 90 % (median 32 %). Non-urgent emergency visits are considered an inappropriate and inefficient use of the health-care system because they may lead to higher expenses, crowding, treatment delays, and loss of continuity of health care provided by a general practitioner. Urgency levels of doctor–walk-in patient encounters were assessed based on their region of origin in a diverse Norwegian population.
Methods
An anonymous, multilingual questionnaire was distributed to all walk-in patients at a general emergency outpatient clinic in Oslo during two weeks in September 2009. We analysed demographic data, patient–doctor assessments of the level of urgency, and the results of the consultation. We used descriptive statistics to obtain frequencies with 95 % confidence interval (CI) for assessed levels of urgency and outcomes. Concordance between the patients’ and doctors’ assessments was analysed using a Kendall tau-b test. We used binary logistic regression modelling to quantify associations of explanatory variables and outcomes according to urgency level assessments.
Results
The analysis included 1821 walk-in patients. Twenty-four per cent of the patients considered their emergency consultation to be non-urgent, while the doctors considered 64 % of encounters to be non-urgent. The concordance between the assessments by the patient and by their doctor was positive but low, with a Kendall tau-b coefficient of 0.202 (p < 0.001). Adjusted logistic regression analysis showed that patients from Eastern Europe (odds ratio (OR) = 3.04; 95 % CI 1.60–5.78), Asia and Turkey (OR = 4.08; 95 % CI 2.43–6.84), and Africa (OR = 8.47; 95 % CI 3.87–18.5) reported significantly higher urgency levels compared with Norwegians. The doctors reported no significant difference in assessment of urgency based on the patient’s region of origin, except for Africans (OR = 0.64; 95 % CI 0.43–0.96).
Conclusion
This study reveals discrepancies between assessments by walk-in patients and doctors of the urgency level of their encounters at a general emergency clinic. The patients’ self-assessed perception of the urgency level was related to their region of origin.
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Ruud, Sven Eirik; Aandstad, Ruth Aga; Natvig, Bård & Hjortdahl, Per
(2015).
Use of emergency care services by immigrants—a survey of walk-in patients who attended the Oslo Accident and Emergency Outpatient Clinic.
BMC Emergency Medicine.
ISSN 1471-227X.
15:25.
doi:
10.1186/s12873-015-0055-0.
Full text in Research Archive
Show summary
Background
The Oslo Accident and Emergency Outpatient Clinic (OAEOC) experienced a 5–6 % annual increase in patient visits between 2005 and 2011, which was significantly higher than the 2–3 % annual increase among registered Oslo residents. This study explored immigrant walk-in patients’ use of both the general emergency and trauma clinics of the OAEOC and their concomitant use of regular general practitioners (RGPs) in Oslo.
Methods
A cross-sectional survey of walk-in patients attending the OAEOC during 2 weeks in September 2009. We analysed demographic data, patients’ self-reported affiliation with the RGP scheme, self-reported number of OAEOC and RGP consultations during the preceding 12 months. The first approach used Poisson regression models to study visit frequency. The second approach compared the proportions of first- and second-generation immigrants and those from the four most frequently represented countries (Sweden, Pakistan, Somalia and Poland) among the patient population, with their respective proportions within the general Oslo population.
Results
The analysis included 3864 patients: 1821 attended the Department of Emergency General Practice (“general emergency clinic”); 2043 attended the Section for Orthopaedic Emergency (“trauma clinic”). Both first- and second-generation immigrants reported a significantly higher OAEOC visit frequency compared with Norwegians. Norwegians, representing 73 % of the city population accounted for 65 % of OAEOC visits. In contrast, first- and second-generation immigrants made up 27 % of the city population but accounted for 35 % of OAEOC visits. This proportional increase in use was primarily observed in the general emergency clinic (42 % of visits). Their proportional use of the trauma clinic (29 %) was similar to their proportion in the city. Among first-generation immigrants only 71 % were affiliated with the RGP system, in contrast to 96 % of Norwegians. Similar finding were obtained when immigrants were grouped by nationality. Compared to Norwegians, immigrants from Sweden, Pakistan and Somalia reported using the OAEOC significantly more often. Immigrants from Sweden, Poland and Somalia were over-represented at both clinics. The least frequent RGP affiliation was among immigrants from Sweden (32 %) and Poland (65 %).
Conclusions
In Norway, immigrant subgroups use emergency health care services in different ways. Understanding these patterns of health-seeking behaviour may be important when designing emergency health services.
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Brandrud, Aleidis Esther Skard; Haldorsen, Gro Sævil Helljesen; Nyen, Bjørnar; Vårdal, Mari H; Nelson, Eugene C. & Sandvik, Leiv
[Show all 7 contributors for this article]
(2015).
Development and Validation of the CPO Scale, a New Instrument for Evaluation of Health Care Improvement Efforts.
Quality Management in Health Care.
ISSN 1063-8628.
24(3),
p. 109–120.
doi:
10.1097/QMH.0000000000000065.
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Lappegard, Øystein & Hjortdahl, Per
(2014).
Acute admissions to a community hospital - health consequences: a randomized controlled trial in Hallingdal, Norway.
BMC Family Practice.
ISSN 1471-2296.
15.
doi:
10.1186/s12875-014-0198-1.
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Lappegard, Øystein & Hjortdahl, Per
(2013).
The choice of alternatives to acute hospitalization: a descriptive study from Hallingdal, Norway.
BMC Family Practice.
ISSN 1471-2296.
14.
doi:
10.1186/1471-2296-14-87.
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Brandrud, Aleidis Skard; Schreiner, Ada; Hjortdahl, Per; Helljesen, Gro Sævil; Nyen, Bjørnar & Nelson, Eugene
(2011).
Three success factors for continual improvement in healthcare: an analysis of the reports of improvement team members.
BMJ Quality and Safety.
ISSN 2044-5415.
20(3),
p. 251–259.
doi:
10.1136/bmjqs.2009.038604.
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Eliassen, Knut Eirik; Fetveit, Arne; Hjortdahl, Per; Berlid, Dag & Lindbæk, Morten
(2008).
Nye retningslinjer for antibiotikabruk i primærhelsetjenesten.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
128(20),
p. 2330–2334.
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Hjortdahl, Per & Høiby, Ernst Arne
(2008).
Streptokokkhalsinfeksjon og skarlagensfeber R72/R76.
In Lindbæk, Morten (Eds.),
Nasjonale faglige retningslinjer for antibiotikabruk i primærhelsetjenesten (Helsedirektoratet bestillingsnummer IS-1593).
Helsedirektoratet og Antibiotikasenteret for primærmedisin (ASP).
ISSN 978-82-8081-112-7.
p. 51–56.
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Årsand, Eirik; Tufano, James T.; Ralston, James D. & Hjortdahl, Per
(2008).
Designing mobile dietary management support technologies for people with diabetes.
Journal of Telemedicine and Telecare.
ISSN 1357-633X.
14(7),
p. 329–332.
doi:
10.1258/jtt.2008.007001.
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Bjerke, Trond Nergaard; Kummervold, Per Egil; Christiansen, E K & Hjortdahl, Per
(2008).
"It made me feel connected" - An explorative study on the use of mobile sms in follow-up care for substance abusers.
Journal on Addictions Nursing.
ISSN 1088-4602.
19(4),
p. 195–200.
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Bakken, Kjersti; Larsen, Eli; Lindberg, Per Christian; Rygh, Ellen & Hjortdahl, Per
(2007).
Mangelfull kommunikasjon om legemiddelbruk i primærhelsetjenesten.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
127(13-14),
p. 12–15.
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Gude, Tore; Vaglum, Per Jørgen Wiggen; Anvik, Tor; Bærheim, Anders; Eide, Hilde & Fasmer, Ole Bernt
[Show all 13 contributors for this article]
(2007).
Observed Communication Skills: How Do They Relate To The Consultation Content?A nation-wide study of graduate medical students seeing a standardized patient for afirst-time consultation in a general practice setting.
BMC Medical Education.
ISSN 1472-6920.
7(43).
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Bakken, Kjersti; Larsen, Eli; Lindberg, Per Christian; Rygh, Ellen & Hjortdahl, Per
(2007).
Mangelfull kommunikasjon om legemiddelbruk i primærhelsetjenesten.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
127(13/14),
p. 1766–1769.
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Rønsen, Yngve & Hjortdahl, Per
(2007).
Pasientlister hos kvinnelige og mannlige fastleger.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
127(19),
p. 2508–2512.
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Gjelsvik, Bjørn E.; Swensen, Elisabeth & Hjortdahl, Per
(2007).
Allmennlegers syn på hormonbehandling i og etter overgangsalderen.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
127(11),
p. 1500–3.
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Lillestøl, Jostein; Ubøe, Jan; Rønsen, Yngve & Hjortdahl, Per
(2007).
Patient allocations according to circumstances and preferances: Modeling based on the Norwegian patient list system.
Norges Handelshoeyskole. Institutt for Foretaksoekonomi. Discussion Paper.
ISSN 1500-4066.
2.
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Rygh, Ellen & Hjortdahl, Per
(2007).
Continous and integrated health care services in rural areas.
Rural and remote health.
ISSN 1445-6354.
6(4).
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Romøren, Maria; Hussein, Fatma; Steen, Tore W.; Velauthapillai, Man; Sundby, Johanne & Hjortdahl, Per
[Show all 7 contributors for this article]
(2007).
Costs and health consequences of chlamydia management strategies among pregnant women in sub-Saharan Africa.
Sexually Transmitted Infections.
ISSN 1368-4973.
83,
p. 558–566.
doi:
10.1136/sti.2007.026930.
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Romøren, Maria; Velauthapillai, M; Rahman, M; Sundby, J; Klouman, Elise & Hjortdahl, P
(2007).
Trichomoniasis and bacterial vaginosis in pregnancy: inadequately managed with the syndromic approach.
Bulletin of the World Health Organization.
ISSN 0042-9686.
85(4),
p. 297–304.
doi:
10.2471/BLT.06.031922.
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Andreassen, Hege Kristin; Trondsen, Marianne Vibeke; Kummervold, Per Egil; Gammon, Deede & Hjortdahl, Per
(2006).
Patients who use e-mediated communication with their doctor -new constructions of trust in the patient - doctor relationship.
Qualitative Health Research.
ISSN 1049-7323.
16(2),
p. 238–248.
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Andreassen, HK; Trondsen, M; Kummervold, PE; Gammon, D & Hjortdahl, Per
(2006).
Patients who use E-mediated communication with their doctor: New constructions of trust in the patient-doctor relationship.
Qualitative Health Research.
ISSN 1049-7323.
16.
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von Bultzingslowen, I; Eliasson, G; Sarvimaki, A; Mattsson, B & Hjortdahl, Per
(2006).
Patients' views on interpersonal continuity in primary care: a sense of security based on four core foundations.
Family Practice.
ISSN 0263-2136.
23,
p. 210–219.
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Lindbæk, Morten; Francis, N; Cannings-John, R; Butler, CC & Hjortdahl, Per
(2006).
Clinical course of suspected viral sore throat in young adults: Cohort study.
Scandinavian Journal of Primary Health Care.
ISSN 0281-3432.
24.
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Andreassen, Hege Kristin; Wangberg, Silje C; Wynn, Rolf; Sørensen, Tove & Hjortdahl, Per
(2006).
Helserelatert bruk av Internett i den norske befolkningen.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
126(22),
p. 2950–2952.
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Krogstad, Unni; Hofoss, Dag; Veenstra, Marijke & Hjortdahl, Per
(2006).
Predictors of job satisfaction among doctors, nurses and auxiliaries in Norwegian hospitals: relevance for micro unit culture.
Human Resources for Health.
ISSN 1478-4491.
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Hjortdahl, Per
(2005).
Unges kommunikasjonsmåter.
In Haavet, Ole Rikard (Eds.),
Ungdomsmedisin.
Universitetsforlaget.
ISSN 82-15-00702-3.
p. 89–96.
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Haavet, Ole Rikard; Straand, Jørund; Hjortdahl, Per & Saugstad, Ola Didrik
(2005).
Do negative life experiences predict the health-care-seeking of adolescents? A study of 10th-year students in Oslo, Norway.
Journal of Adolescent Health.
ISSN 1054-139X.
37(2),
p. 128–134.
doi:
10.1016/j.jadohealth.2004.08.0.
Show summary
Purpose
To analyze associations among the negative life experiences and health-care-seeking of adolescents during the 12 months before the study.
Methods
Cross-sectional questionnaire study among 10th-year students at all secondary schools in Oslo.
Results
In 2000 and in 2001, 7329 (88%) of Oslo�s 8316 secondary-school students responded to the questionnaire. Some contacts with primary health care during the previous year were reported by 71% of respondents, and 6% had seen a mental health practitioner (psychologist or psychiatrist). Health care utilization was not correlated with the family�s financial situation as reported by the student (boys = 1019; girls = 1258), or with a parent�s unemployment (boys = 253; girls = 325). The 2112 boys (59% of all) and 2378 girls (64%) who reported feeling strong pressure from others to succeed, had more contacts with all primary health care services. Girls, but not boys, who reported being bullied by others reported more psychologist or psychiatrist visits than did their nonbullied peers. Exposure to physical violence was associated with a significant increase in visits to the School Health Service, family physician, and emergency medical service, and was related to more than doubling the probability of visiting a mental health practitioner. Being sexually violated during the previous year increased the likelihood of boys visiting mental health practitioner more than four times (odds ratio [OR] 4.6; 95% confidence interval [CI] 1.7�12.2); and visiting School Health Service by nearly four times, (OR 3.7; 95% CI 1.0�13.5).
Conclusion
Variation in adolescent health care seeking can, by and large, be predicted by negative life experiences.
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Krogstad, Unni; Hofoss, Dag; Veenstra, Marijke; Gulbrandsen, Pål & Hjortdahl, Per
(2005).
Hospital quality improvement in context: a multilevel analysis of staff job evaluation.
Quality and Safety in Healthcare.
ISSN 1475-3898.
14,
p. 438–442.
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Gude, Tore; Hjortdahl, Per; Anvik, Tor; Bærheim, Anders; Fasmer, Ole Bernt & Grimstad, Hilde
[Show all 9 contributors for this article]
(2005).
Does change from a traditional to a new medical curriculum reduce negative attitudes among students? A quasi-experimental study.
Medical Teacher.
ISSN 0142-159X.
27(8),
p. 737–739.
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Gilhus, Nils Erik & Hjortdahl, Per
(2005).
Fordypningsstillinger er en forskningsressurs.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
125,
p. 2224–2225.
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Lindbæk, Morten; Høiby, Ernst Arne; Lermark, Gro; Steinsholt, Inger Marie & Hjortdahl, Per
(2005).
Clinical symptoms and signs in sore throat patients with large colony variant beta-haemolytic streptococci groups C or G versus group A.
British Journal of General Practice.
ISSN 0960-1643.
55(517),
p. 615–619.
Show summary
BACKGROUND: The role of large colony streptococci groups C or G as pathogen agents in sore throat has been questioned. AIM: To analyse clinical features of patients with large colony streptococci groups C or G compared with patients with group A streptococci (GAS) and with negative cultures. DESIGN OF STUDY: Prospective study of patients with sore throat. SETTING: Two Norwegian general practices in Stokke and Kongsberg communities with 6500 patients.METHOD: Frequency of clinical features in the three patient categories including the four Centor criteria (fever, anterior cervical lymphadenopathy, tonsillar exudates, and lack of cough), degree of pain on swallowing, pharyngeal rubor, C-reactive protein (CRP) values, patient age between 3 and 14 years, and duration of symptoms before seeing the doctor. A logistic regression analysis to find independent predictors was performed. RESULTS: Out of 306 patients with a sore throat, 244 were adults and 62 were children under 10 years old; 40% were men. One hundred and twenty-seven had GAS, 33 had streptococci groups C or G, and 146 had negative throat cultures. Forty-eight per cent of the GAS patients and 45% of the C or G patients met three or four of the Centor criteria. The logistic regression revealed that in patients with GAS considerable pain on swallowing, an age of 3-14 years and a duration of symptoms of < or =3 days or less were significantly associated with GAS infection in addition to the Centor criteria. The same results were found when all streptococci were analysed together, in addition elevated CRP was significant. In patients with streptococci group C or G an elevated CRP-value was significantly associated. CONCLUSION: Patients with tonsillitis caused by streptococcus groups C or G have, to a large extent, the same clinical picture as patients with GAS. Large colony streptococci groups C and G should be considered as throat pathogens in line with GAS.
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Gude, Tore; Hjortdahl, Per; Anvik, Tore; Bærheim, Anders; Fasmer, Ole Bernt & Grimstad, Hilde
[Show all 10 contributors for this article]
(2005).
Does change from a traditional to a new medical curriculum reduce negative attitudes among students? A quasi-experimental study.
Medical Teacher.
ISSN 0142-159X.
27,
p. 737–739.
-
Krogstad, U; Hofoss, Dag; Hjortdahl, P; Gulbrandsen, P & Veenstra, M
(2005).
Hospital quality improvement in context: a multilevel analysis of staff job evaluations.
Quality and Safety in Healthcare.
ISSN 1475-3898.
14,
p. 438–442.
-
Gilhus, NE & Hjortdahl, Per
(2005).
Fordypningsstillinger er en forskningsressurs.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
125(16),
p. 2224–2225.
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Steen, Tore W.; Hjortdahl, Per; Størvold, Gunnar; Vilimas, Kostas; Elstrøm, Petter & Esholdt, Ingrid
[Show all 7 contributors for this article]
(2005).
Forekomst av genital infeksjon med Chlamydia trachomatis blant18-29-åringer i Oslo.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
p. 1637–1639.
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Lindbæk, Morten; Thom, Erling; Fuglerud, Per & Hjortdahl, Per
(2004).
Har råmelkstabletter symptomatisk effekt på vondt i halsen?
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
124,
p. 3187–3190.
Show summary
Bakgrunn. Halsinfeksjon er vanlig i allmennpraksis, ofte karakterisert som «vondt i halsen» eller sår hals. Det kan være betydelig smerte og ubehag ved alle typer halsinfeksjon. Vi ønsket å finne ut om en av eller begge de to forskjellige råmelkstablettene på det norske markedet kan forkorte sykdomsforløpet ved halsinfeksjoner som ikke er forårsaket av gruppe A-streptokokker.
Materiale og metoder. Studien var prospektiv, dobbeltblind, randomisert og placebokontrollert. 148 voksne personer med sår hals ble rekruttert i fem norske militærleirer vintrene 1999 - 2001. Hovedutfallsmål var grad av halsonde og sykdomsfølelse, målt ved visuell analoge skalaer (VAS), og antall dager til pasienten følte seg frisk. Pasientene ble delt i tre grupper som fikk henholdsvis Vekk i morgen, Curamed eller placebo sugetabletter som de skulle ta inntil de følte seg friske.
Resultater. 148 pasienter fullførte studien. I alle de tre gruppene var det en smertereduksjon på ca. 50 % etter seks dager, men det var ingen signifikante forskjeller mellom gruppene. Curamed-gruppen hadde en noe lavere, ikke-signifikant utgangsverdi for sykdomsfølelse og en lavere reduksjon i symptomstyrke enn de to andre gruppene. Forskjellene i symptomreduksjon mellom gruppene var ikke signifikante. Det var heller ikke signifikante forskjeller mellom gruppene når det gjaldt antall dager til pasienten følte seg frisk.
Fortolkning. I vår studie ble det ikke funnet noen effekt av Vekk i morgen og Curamed på halsondet og sykdomsfølelsen hos personer med halsinfeksjon
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Lindbæk, Morten; Høiby, Ernst Arne; Lermark, Gro; Steinsholt, Inger Marie & Hjortdahl, Per
(2004).
Which is the best method to trace group A streptococci in sore throat patients: culture or GAS antigen test?
Scandinavian Journal of Primary Health Care.
ISSN 0281-3432.
22,
p. 234–238.
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Lindbæk, Morten; Høiby, Ernst Arne; Lermark, Gro; Steinsholt, Inger Marie & Hjortdahl, Per
(2004).
Predictors for spread of clinical group A streptoccal tonsillitis within the household.
Scandinavian Journal of Primary Health Care.
ISSN 0281-3432.
22,
p. 239–243.
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Kummervold, Per Egil; Trondsen, Marianne Vibeke; Andreassen, Hege Kristin; Gammon, Deede & Hjortdahl, Per
(2004).
Erfaringer med lege-pasient-kontakt over Internett.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
-
Romøren, Maria; Hjortdahl, Per & Sundby, Johanne
(2004).
Chlamydia and gonorrhoea in pregnancy: effectiveness of diagnosis and treatment in Botswana.
Sexually Transmitted Infections.
ISSN 1368-4973.
80(5),
p. 395–400.
-
Brekke, Mette & Hjortdahl, Per
(2004).
Musculo-skeletal pain among 40- and 45-year olds in Oslo: differences between two socioeconomically contrasting areas, and their possible explanations.
International Journal for Equity in Health.
ISSN 1475-9276.
3(10).
Show summary
Questionnaire survey, carried out as part of The Oslo Health Study in 2001-2002. Data from 821 persons (40 and 45 year old) living in a less affluent inner city area (called east) were compared with 854 persons living in an affluent area of the city (called west).
Musculo-skeletal pain is reported by 55-60 % of middle aged persons in Oslo during a four week period, and must be considered a normal phenomenon. Poor social conditions, inactivity, mental health problems and beeing an immigrant imply increased risk of more severe symptoms with a concomitant demand of health care.
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Starfield, Barabara & Hjortdahl, Per
(2004).
Primary health care and responsibilities of public health in six countries.
Revista Española de Salud Pública.
ISSN 1135-5727.
78(1),
p. 17–26.
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Kummervold, Per Egil; Trondsen, Marianne Vibeke; Andreassen, Hege; Gammon, Deede & Hjortdahl, Per
(2004).
Patient-physician interaction over the Internet.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
20.
-
Tellnes, Gunnar & Hjortdahl, Per
(2003).
Doktor på Værøy og Røst,
Med makten i sitt ord.
Unipub forlag.
ISSN 82-7477-159-1.
p. 17–24.
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Brekke, Mette; Hjortdahl, Per & Kvien, Tore Kristian
(2003).
Changes in self-efficacy and health status over 5 years: a longitudinal observational study of 306 patients with rheumatoid arthritis.
Arthritis and Rheumatism.
ISSN 0004-3591.
49(3),
p. 342–348.
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Rosenvinge, J.H.; Laugerud, S & Hjortdahl, Per
(2003).
Trust in health Websites: a survey among Norwegian Internet users.
Journal of Telemedicine and Telecare.
ISSN 1357-633X.
9(3),
p. 161–166.
-
Gilhus, N.E. & Hjortdahl, Per
(2003).
Research and specialty associations of the Medical Society.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
123(10),
p. 1370–1371.
-
Freeman, George; Olesen, F. & Hjortdahl, Per
(2003).
Continuity of care: an essential element of modern general practice?
Family Practice.
ISSN 0263-2136.
20,
p. 623–627.
-
Gilhus, Nils Erik & Hjortdahl, P
(2003).
Forskning og Legeforeningens spesialforeninger.
Tidsskrift for Den norske legeforening.
ISSN 0029-2001.
123,
p. 1370–1371.