Petter Andreas Ringen
Professor II
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Division of Mental Health and Addiction
![Image of Petter Andreas Ringen](https://www.med.uio.no/klinmed/english/people/aca/pettr/pettr.jpg)
Norwegian version of this page
Username
Visiting address
Sognsvannsveien 21
Gaustad sykehus
0372 Oslo
Postal address
Postboks 1039 Blindern
0315 Oslo
Publications
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Bell, Christina; Rokicki, Jaroslav; Tesli, Natalia; Gurholt, Tiril Pedersen; Hjell, Gabriela & Fischer-Vieler, Thomas [Show all 15 contributors for this article] (2024). Hypothalamic subunit volumes and relations to violence and psychopathy in male offenders with or without a psychotic disorder. European Archives of Psychiatry and Clinical Neuroscience. ISSN 0940-1334. doi: 10.1007/s00406-023-01725-4.
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Gjerdalen, Oda Skancke; Ullevoldsæter Lystad, June; Bull, Helen; Ringen, Petter Andreas; Røssberg, Jan Ivar & Martinsen, Egil Wilhelm [Show all 9 contributors for this article] (2023). Vocational rehabilitation augmented with cognitive behavioral therapy or cognitive remediation for individuals with schizophrenia: a 5-year follow-up study. Nordic Journal of Psychiatry. ISSN 0803-9488. 77(1), p. 23–30. doi: 10.1080/08039488.2022.2042598.
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Langjord, Tuva; Pedersen, Geir Arild Feigum; Bovim, Tone Helene; Christensen, Tore Buer; Eikenæs, Ingeborg Helene Ulltveit-Moe & Hove, Oddbjørn [Show all 21 contributors for this article] (2023). Mental health disorders, functioning and health-related quality of life among extensively hospitalized patients due to severe self-harm – results from the Extreme Challenges project. Frontiers in Psychiatry. ISSN 1664-0640. 14. doi: 10.3389/fpsyt.2023.1258025. Full text in Research Archive
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Argote, Mathilde; Sescousse, Guillaume; Brunelin, Jérôme; Baudin, Grégoire; Schaub, Michael Patrick & Rabin, Rachel [Show all 37 contributors for this article] (2023). Association between cannabis use and symptom dimensions in schizophrenia spectrum disorders: an individual participant data meta-analysis on 3053 individuals. EClinicalMedicine. ISSN 2589-5370. 64. doi: 10.1016/j.eclinm.2023.102199. Full text in Research Archive
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Lunding, Synve Hoffart; Ueland, Torill; Aas, Monica; Høegh, Margrethe Collier; Werner, Maren Caroline Frogner & Rødevand, Linn [Show all 16 contributors for this article] (2023). Tobacco smoking related to childhood trauma mediated by cognitive control and impulsiveness in severe mental disorders. Schizophrenia Research. ISSN 0920-9964. 261, p. 236–244. doi: 10.1016/j.schres.2023.09.041. Full text in Research Archive
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Fischer-Vieler, Thomas; Ringen, Petter Andreas; Kvig, Erling Inge; Bell, Christina; Hjell, Gabriela & Tesli, Natalia [Show all 11 contributors for this article] (2023). Associations Between Clinical Insight and History of Severe Violence in Patients With Psychosis. Schizophrenia Bulletin Open. ISSN 2632-7899. 4(1). doi: 10.1093/schizbullopen/sgad011. Full text in Research Archive
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Bell, Christina; Tesli, Natalia; Gurholt, Tiril Pedersen; Rokicki, Jaroslav; Hjell, Gabriela & Fischer-Vieler, Thomas [Show all 14 contributors for this article] (2022). Psychopathy subdomains in violent offenders with and without a psychotic disorder. Nordic Journal of Psychiatry. ISSN 0803-9488. doi: 10.1080/08039488.2022.2128869. Full text in Research Archive
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Goldfarb, Michael; De Hert, Marc; Detraux, Johan; Di Palo, Katherine; Munir, Haroon & Music, Sanela [Show all 8 contributors for this article] (2022). Severe Mental Illness and Cardiovascular Disease: JACC State-of-the-Art Review. Journal of the American College of Cardiology. ISSN 0735-1097. 80(9), p. 918–933. doi: 10.1016/j.jacc.2022.06.017.
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Kan, Zhanna; Søegaard, Erik Ganesh Iyer; Siqveland, Johan; Hussain, Ajmal; Hanssen-Bauer, Ketil & Jensen, Pia [Show all 12 contributors for this article] (2022). Coping, Social Support and Loneliness during the COVID-19 Pandemic and Their Effect on Depression and Anxiety: Patients’ Experiences in Community Mental Health Centers in Norway. Healthcare. ISSN 2227-9032. 10(5). doi: 10.3390/healthcare10050875. Full text in Research Archive Show summary
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Ringen, Petter Andreas; Lund-Stenvold, Elisabeth Haug; Andreassen, Ole; Gaarden, Torfinn Lødøen; Hartberg, Cecilie Bhandari & Johnsen, Erik [Show all 14 contributors for this article] (2022). Quality of clinical management of cardiometabolic risk factors in patients with severe mental illness in a specialist mental health care setting. Nordic Journal of Psychiatry. ISSN 0803-9488. 76(8), p. 602–609. doi: 10.1080/08039488.2022.2039288. Full text in Research Archive Show summary
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Gjerdalen, Oda Skancke; Lystad, June Ullevoldsæter; Bull, Helen; Ringen, Petter Andreas; Røssberg, Jan Ivar & Martinsen, Egil Wilhelm [Show all 9 contributors for this article] (2022). Vocational rehabilitation augmented with cognitive behavioral therapy or cognitive remediation for individuals with schizophrenia: a 5-year follow-up study. Nordic Journal of Psychiatry. ISSN 0803-9488. 77(1), p. 23–30. doi: 10.1080/08039488.2022.2042598. Full text in Research Archive
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Lunding, Synve Hoffart; Simonsen, Carmen Elisabeth; Aas, Monica; Rødevand, Linn ; Werner, Maren Caroline Frogner & Laskemoen, Jannicke Fjæra [Show all 13 contributors for this article] (2021). Childhood trauma and cardiometabolic risk in severe mental disorders: The mediating role of cognitive control. European psychiatry. ISSN 0924-9338. 64(1). doi: 10.1192/j.eurpsy.2021.14. Full text in Research Archive
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Høilund, Hanne; Galea, David & Ringen, Petter Andreas (2019). Improving quality of antipsychotic polypharmacy: a pilot study. Nordic Journal of Psychiatry. ISSN 0803-9488. doi: 10.1080/08039488.2019.1690044.
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Ringen, Petter Andreas; Reponen, Elina Johanna; Vedal, Trude Seselie Jahr; Andreassen, Ole Andreas; Steen, Nils Eiel & Melle, Ingrid (2019). Predictors for antipsychotic dosage change in the first year of treatment in schizophrenia spectrum and bipolar disorders. Frontiers in Psychiatry. ISSN 1664-0640. 10:649, p. 1–8. doi: 10.3389/fpsyt.2019.00649. Full text in Research Archive
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Icick, Romain; Melle, Ingrid; Étain, Bruno; Ringen, Petter Andreas; Aminoff, Sofie Ragnhild & Leboyer, Marion. [Show all 12 contributors for this article] (2019). Tobacco smoking and other substance use disorders associated with recurrent suicide attempts in bipolar disorder. Journal of Affective Disorders. ISSN 0165-0327. 256, p. 348–357. doi: 10.1016/j.jad.2019.05.075.
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Storvestre, Guttorm Breivik; Valnes, Lars Magnus; Jensen, Arvid; Nerland, Stener; Tesli, Natalia & Hymer, Knut-Erik [Show all 14 contributors for this article] (2019). A preliminary study of cortical morphology in schizophrenia patients with a history of violence. Psychiatry Research : Neuroimaging. ISSN 0925-4927. 288, p. 29–36. doi: 10.1016/j.pscychresns.2019.04.013. Full text in Research Archive
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Ringen, Petter Andreas (2018). Psykiatrien – hvor står du, hvor går du? Tidsskrift for Den norske legeforening. ISSN 0029-2001. 138(3), p. 1–8. doi: 10.4045/tidsskr.17.0936.
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Holth, Fredrik; Walby, Fredrik A; Røstbakken, Thea; Lunde, Ingeborg; Ringen, Petter Andreas & Ramleth, Ruth-Kari [Show all 11 contributors for this article] (2018). Extreme challenges: psychiatric inpatients with severe self-harming behavior in Norway: a national screening investigation. Nordic Journal of Psychiatry. ISSN 0803-9488. 72(8), p. 605–612. doi: 10.1080/08039488.2018.1511751.
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Ringen, Petter Andreas; Falk, Ragnhild Sørum; Antonsen, Bjørnar Torske; Færden, Ann; Mamen, Asgeir & Rognli, Eline Borger [Show all 9 contributors for this article] (2018). Using motivational techniques to reduce cardiometabolic risk factors in long term psychiatric inpatients: A naturalistic interventional study. BMC Psychiatry. ISSN 1471-244X. 18. doi: 10.1186/s12888-018-1832-6. Full text in Research Archive
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Færden, Ann; Lyngstad, Siv Hege; Simonsen, Carmen Elisabeth; Ringen, Petter Andreas; Papsuev, Oleg & Dieset, Ingrid [Show all 10 contributors for this article] (2018). Reliability and validity of the self-report version of the apathy evaluation scale in first-episode Psychosis: Concordance with the clinical version at baseline and 12 months follow-up. Psychiatry Research. ISSN 0165-1781. 267, p. 140–147. doi: 10.1016/j.psychres.2018.05.065. Full text in Research Archive
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Ringen, Petter Andreas; Færden, Ann; Antonsen, Bjørnar Torske; Falk, Ragnhild Sørum; Mamen, Asgeir & Rognli, Eline Borger [Show all 9 contributors for this article] (2018). Cardiometabolic risk factors, physical activity and psychiatric status in patients in long-term psychiatric inpatient departments. Nordic Journal of Psychiatry. ISSN 0803-9488. 72(4), p. 296–302. doi: 10.1080/08039488.2018.1449012. Full text in Research Archive
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Aas, Monica; Melle, Ingrid; Bettella, Francesco; Djurovic, Srdjan; Le Hellard, Stephanie & Bjella, Thomas [Show all 12 contributors for this article] (2017). Psychotic patients who used cannabis frequently before illness onset have higher genetic predisposition to schizophrenia than those who did not. Psychological Medicine. ISSN 0033-2917. 48(1), p. 43–49. doi: 10.1017/S0033291717001209. Full text in Research Archive
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Kvitland, Levi Røstad; Ringen, Petter Andreas; Aminoff, Sofie Ragnhild; Demmo, Christine; Hellvin, Tone & Lagerberg, Trine Vik [Show all 8 contributors for this article] (2016). Duration of untreated illness in first-treatment bipolar I disorder in relation to clinical outcome and cannabis use. Psychiatry Research. ISSN 0165-1781. 246, p. 762–768. doi: 10.1016/j.psychres.2016.07.064.
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Ringen, Petter Andreas; Nesvåg, Ragnar; Helle, Siri; Lagerberg, Trine Vik; Lange, Elisabeth & Løberg, Else-Marie [Show all 9 contributors for this article] (2016). Premorbid cannabis use is associated with more symptoms and poorer functioning in schizophrenia spectrum disorder. Psychological Medicine. ISSN 0033-2917. 46(15), p. 3127–3136. doi: 10.1017/S0033291716001999. Show summary
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Lagerberg, Trine Vik; Icick, R.; Andreassen, Ole Andreas; Ringen, Petter Andreas; Etain, B & Aas, Monica [Show all 10 contributors for this article] (2016). Cannabis use disorder is associated with greater illness severity in tobacco smoking patients with bipolar disorder. Journal of Affective Disorders. ISSN 0165-0327. 190, p. 286–293. doi: 10.1016/j.jad.2015.10.023.
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Helle, Siri; Ringen, Petter Andreas; Melle, Ingrid; Larsen, Tor Ketil; Gjestad, Rolf & Johnsen, Erik [Show all 12 contributors for this article] (2016). Cannabis use is associated with 3 years earlier onset of schizophrenia spectrum disorder in a naturalistic, multi-site sample (N = 1119). Schizophrenia Research. ISSN 0920-9964. 170(1), p. 217–221. doi: 10.1016/j.schres.2015.11.027.
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Kvitland, Levi Røstad; Melle, Ingrid; Aminoff, Sofie Ragnhild; Lagerberg, Trine Vik; Andreassen, Ole Andreas & Ringen, Petter Andreas (2016). Cannabis use in first-treatment bipolar I disorder: Relations to clinical characteristics. Early Intervention in Psychiatry. ISSN 1751-7885. 10(1), p. 36–44. doi: 10.1111/eip.12138.
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Kvitland, Levi Røstad; Melle, Ingrid; Aminoff, Sofie Ragnhild; Demmo, Christine; Lagerberg, Trine Vik & Andreassen, Ole Andreas [Show all 7 contributors for this article] (2015). Continued cannabis use at one year follow up is associated with elevated mood and lower global functioning in bipolar I disorder. BMC Psychiatry. ISSN 1471-244X. 15(1). doi: 10.1186/s12888-015-0389-x.
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Ringen, Petter Andreas; Engh, John; Birkenæs, Astrid B.; Dieset, Ingrid & Andreassen, Ole A. (2014). Increased mortality in schizophrenia due to cardiovascular disease - a non-systematic review of epidemiology, possible causes and interventions. Frontiers in Psychiatry. ISSN 1664-0640. 5. doi: 10.3389/fpsyt.2014.00137. Full text in Research Archive
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Aas, Monica; Etain, B; Bellivier, F; Henry,, C.; Lagerberg, Trine Vik & Ringen, Petter Andreas [Show all 12 contributors for this article] (2014). Additive effects of childhood abuse and cannabis abuse on clinical expressions of bipolar disorders. Psychological Medicine. ISSN 0033-2917. 44(8), p. 1653–1662. doi: 10.1017/S0033291713002316.
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Lagerberg, Trine Vik; Kvitland, Levi Røstad; Aminoff, Sofie Ragnhild; Aas, Monica; Ringen, Petter Andreas & Andreassen, Ole Andreas [Show all 7 contributors for this article] (2014). Indications of a dose-response relationship between cannabis use and age at onset in bipolar disorder. Psychiatry Research. ISSN 0165-1781. 215(1), p. 101–104. doi: 10.1016/j.psychres.2013.10.029.
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Lange, Elisabeth; Nesvåg, Ragnar; Ringen, Petter Andreas; Hartberg, Cecilie Bhandari; Haukvik, Unn Kristin H. & Andreassen, Ole Andreas [Show all 8 contributors for this article] (2014). One year follow-up of alcohol and illicit substance use in first-episode psychosis: Does gender matter? Comprehensive Psychiatry. ISSN 0010-440X. 55(2), p. 274–282. doi: 10.1016/j.comppsych.2013.08.018.
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Ringen, Petter Andreas; Melle, Ingrid; Berg, Akiah Ottesen; Agartz, Ingrid; Spigset, Olav & Simonsen, Carmen Elisabeth [Show all 8 contributors for this article] (2013). Cannabis use and premorbid functioning as predictors of poorer neurocognition in schizophrenia spectrum disorder. Schizophrenia Research. ISSN 0920-9964. 143(1), p. 84–89. doi: 10.1016/j.schres.2012.10.021.
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Jónsdóttir, Halldóra; Ilner, Stein E. Opjordsmoen; Birkenæs, Astrid Brate; Simonsen, Carmen Elisabeth; Engh, John & Ringen, Petter Andreas [Show all 10 contributors for this article] (2013). Predictors of medication adherence in patients with schizophrenia and bipolar disorder. Acta Psychiatrica Scandinavica. ISSN 0001-690X. 127(1), p. 23–33. doi: 10.1111/j.1600-0447.2012.01911.x.
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Lagerberg, Trine Vik; Sundet, Kjetil Søren; Aminoff, Sofie Ragnhild; Berg, Akiah Ottesen; Ringen, Petter Andreas & Andreassen, Ole Andreas [Show all 7 contributors for this article] (2011). Excessive cannabis use is associated with earlier age at onset in bipolar disorder. European Archives of Psychiatry and Clinical Neuroscience. ISSN 0940-1334. 261(6), p. 397–405. doi: 10.1007/s00406-011-0188-4.
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Simonsen, Carmen Elisabeth; Sundet, Kjetil Søren; Vaskinn, Anja; Birkenæs, Astrid Brate; Engh, John & Færden, Ann [Show all 12 contributors for this article] (2011). Neurocognitive dysfunction in bipolar and schizophrenia spectrum disorders depends on history of psychosis rather than diagnostic group. Schizophrenia Bulletin. ISSN 0586-7614. 37(1), p. 73–83. doi: 10.1093/schbul/sbp034.
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Ringen, Petter Andreas; Vaskinn, Anja; Sundet, Kjetil Søren; Engh, John; Jónsdóttir, Halldóra & Simonsen, Carmen Elisabeth [Show all 10 contributors for this article] (2010). Opposite relationships between cannabis use and neurocognitive functioning in bipolar disorder and schizophrenia. Psychological Medicine. ISSN 0033-2917. 40(8), p. 1337–1347. doi: 10.1017/S0033291709991620.
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Engh, John; Friis, Svein; Birkenæs, Astrid Brate; Jónsdóttir, Halldóra; Klungsøyr, Ole & Ringen, Petter Andreas [Show all 10 contributors for this article] (2010). Delusions Are Associated With Poor Cognitive Insight in Schizophrenia. Schizophrenia Bulletin. ISSN 0586-7614. 36(4), p. 830–835. doi: 10.1093/schbul/sbn193.
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Nesvåg, Ragnar; Lange, Elisabeth; Færden, Ann; Barrett, Elisabeth Ann; Emilsson, Bjørn & Ringen, Petter Andreas [Show all 9 contributors for this article] (2010). The use of screening instruments for detecting alcohol and other drug use disorders in first-episode psychosis. Psychiatry Research. ISSN 0165-1781. 177(1-2), p. 228–234. doi: 10.1016/j.psychres.2010.01.007.
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Lagerberg, Trine Vik; Andreassen, Ole Andreas; Ringen, Petter Andreas; Berg, Akiah Ottesen; Larsson, Sara & Agartz, Ingrid [Show all 8 contributors for this article] (2010). Excessive substance use in bipolar disorder is associated with impaired functioning rather than clinical characteristics, a descriptive study. BMC Psychiatry. ISSN 1471-244X. 10(9). doi: 10.1186/1471-244X-10-9.
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Jónsdóttir, Halldóra; Ilner, Stein E. Opjordsmoen; Birkenæs, Astrid Brate; Engh, John; Ringen, Petter Andreas & Vaskinn, Anja [Show all 9 contributors for this article] (2010). Medication Adherence in Outpatients With Severe Mental Disorders Relation Between Self-Reports and Serum Level. Journal of Clinical Psychopharmacology. ISSN 0271-0749. 30(2), p. 169–175. doi: 10.1097/JCP.0b013e3181d2191e.
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Vaskinn, Anja; Sundet, Kjetil Søren; Friis, Svein; Ueland, Toril; Simonsen, Carmen Elisabeth & Birkenæs, Astrid Brate [Show all 11 contributors for this article] (2009). Using the Wisconsin Card Sorting Test to assess learning potential in normal IQ schizophrenia: Does it have potential? Nordic Journal of Psychiatry. ISSN 0803-9488. 63(5), p. 405–411. doi: 10.1080/08039480902879941.
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Engh, John; Friis, Svein; Birkenæs, Astrid Brate; Jónsdóttir, Halldóra; Klungsøyr, Ole & Ringen, Petter Andreas [Show all 10 contributors for this article] (2009). Delusions are associated with low cognitive insight in schizophrenia. Cognitive insight, delusions and hallucinations. Schizophrenia Bulletin. ISSN 0586-7614. doi: 10.1093/schbul/sbn193.
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Simonsen, Carmen Elisabeth; Sundet, Kjetil Søren; Vaskinn, Anja; Birkenæs, Astrid Brate; Engh, John & Hansen, Charlotte F [Show all 11 contributors for this article] (2008). Neurocognitive profiles in bipolar I and bipolar II disorder: differences in pattern and magnitude of dysfunction. Bipolar Disorders. ISSN 1398-5647. 10, p. 245–255.
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Vaskinn, Anja; Sundet, Kjetil Søren; Friis, Svein; Simonsen, Carmen Elisabeth; Birkenæs, Astrid Brate & Jónsdóttir, Halldóra [Show all 8 contributors for this article] (2008). Emotion perception and learning potential: Mediators between neurocognition and social problem-solving in schizophrenia? Journal of the International Neuropsychological Society. ISSN 1355-6177. 14, p. 279–288. doi: 10.1017/S1355017708080314.
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Jónsdóttir, Halldóra; Engh, John; Friis, Svein; Birkenæs, Astrid Brate; Ringen, Petter Andreas & Vaskinn, Anja [Show all 9 contributors for this article] (2008). Measurement of insight in patients with bipolar disorder. Are self-rated scales developed for patients with schizophrenia applicable? Journal of Nervous and Mental Disease. ISSN 0022-3018. 196, p. 333–335. doi: 10.1097/NMD.0b013e31816a62b2.
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Ringen, Petter Andreas; Lagerberg, Trine Vik; Birkenæs, Astrid Brate; Engh, JA; Færden, Ann & Jónsdóttir, Halldóra [Show all 12 contributors for this article] (2008). Differences in prevalence and patterns of substance use in schizophrenia and bipolar disorder. Psychological Medicine. ISSN 0033-2917. 38, p. 1241–1249. doi: 10.1017/S003329170700236X.
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Ringen, Petter Andreas; Melle, Ingrid; Birkenæs, Astrid Brate; Engh, John; Færden, Ann & Jónsdóttir, Halldóra [Show all 13 contributors for this article] (2008). Illicit drug use in patients with psychotic disorders compared with that in the general population: a cross-sectional study. Acta Psychiatrica Scandinavica. ISSN 0001-690X. 117(2), p. 133–138. doi: 10.1111/j.1600-0447.2007.01135.x.
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Birkenæs, Astrid Brate; Birkeland, Kåre I.; Færden, Ann; Jónsdóttir, Halldóra; Ringen, Petter Andreas & Friis, Svein [Show all 9 contributors for this article] (2008). Dyslipidemia independent of body mass in anti psychotic-treated patients under real-life conditions. Journal of Clinical Psychopharmacology. ISSN 0271-0749. 28(2), p. 132–137. doi: 10.1097/JCP.0b013e318166c4f7.
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Ringen, Petter Andreas; Melle, Ingrid; Birkenæs, Astrid Brate; Engh, John; Færden, Ann & Vaskinn, Anja [Show all 9 contributors for this article] (2008). The level of illicit drug use is related to symptoms and premorbid functioning in severe mental illness. Acta Psychiatrica Scandinavica. ISSN 0001-690X. 118, p. 297–304. doi: 10.1111/j.1600-0447.2008.01244.x.
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Vaskinn, Anja; Sundet, Kjetil Søren; Friis, Svein; Simonsen, Carmen Elisabeth; Birkenæs, Astrid Brate & Engh, John [Show all 10 contributors for this article] (2007). The effect of gender on emotion perception in schizophrenia and bipolar disorder. Acta Psychiatrica Scandinavica. ISSN 0001-690X. 116, p. 263–270. doi: 10.1111/j.1600-0447.2007.00991.x.
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Birkenæs, Astrid Brate; Opjordsmoen, Stein; Brunborg, Cathrine; Engh, John; Jonsdottir, Halldora & Ringen, Petter Andreas [Show all 12 contributors for this article] (2007). The level of cardiovascular risk factors in bipolar disorder equals that of schizophrenia: a comparative study. Journal of Clinical Psychiatry. ISSN 0160-6689. 68, p. 917–923.
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Engh, John; Friis, Svein; Birkenæs, Astrid Brate; Jonsdottir, Halldora; Ringen, Petter Andreas & Ruud, Torleif [Show all 9 contributors for this article] (2007). Measuring cognitive insight in schizophrenia and bipolar disorder: a comparative study. BMC Psychiatry. ISSN 1471-244X. doi: 10.1186/1471-244X-7-71.
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Birkenæs, Astrid Brate; Søgaard, Anne Johanne; Engh, John; Jonsdottir, Halldora; Ringen, Petter Andreas & Vaskinn, Anja [Show all 10 contributors for this article] (2006). Sociodemographic characteristics and cardiovascular risk factors in patients with severe mental disorders compared with the general population. Journal of Clinical Psychiatry. ISSN 0160-6689. 67, p. 425–433.
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Melle, Ingrid & Ringen, Petter Andreas (2005). Rus og psykoser. In Rund, BR (Eds.), Schizofreni. Hertervig Akademisk. ISSN 8292023917. p. 211–222. Show summary
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Ringen, Petter Andreas (2020). Acute Coronary Syndrome in Patients With Schizophrenia: A Call for Cardiopsychiatry. Cardiology. ISSN 0008-6312. doi: 10.1159/000507328.
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Kvitland, Levi Røstad; Ringen, Petter Andreas; Aminoff, Sofie Ragnhild; Haram, Marit; Hellvin, Tone & Lagerberg, Trine Vik [Show all 9 contributors for this article] (2013). Cannabis use in the early phase of bipolar disorder: clinical characteristics in a cross-sectional sample. Bipolar Disorders. ISSN 1398-5647. 15, p. 118–118.
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Ringen, Petter Andreas; Melle, Ingrid; Berg, Akiah Ottesen; Simonsen, Carmen Elisabeth; Agartz, Ingrid & Sundet, Kjetil Søren [Show all 7 contributors for this article] (2011). THC IN URINE IN SCHIZOPHRENIA: ASSOCIATIONS WITH SYMPTOM LEVELS AND NEUROCOGNITIVE FUNCTIONING. Schizophrenia Bulletin. ISSN 0586-7614. 37, p. 279–280.
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Simonsen, Carmen Elisabeth; Sundet, Kjetil Søren; Vaskinn, Anja; Birkenaes, A; Engh, JA & Faerden, A [Show all 12 contributors for this article] (2009). NEUROCOGNITIVE DYSFUNCTION IN BIPOLAR AND SCHIZOPHRENIA SPECTRUM DISORDERS: THE ROLE OF HISTORY OF PSYCHOSIS. Schizophrenia Bulletin. ISSN 0586-7614. 35, p. 297–297.
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Lagerberg, Trine Vik; Sundet, Kjetil Søren; Amino, SR; Ringen, Petter Andreas; Andreassen, Ole Andreas & Melle, Ingrid (2009). Different age at onset of bipolar disorder for cannabis and alcohol abusing patients. Bipolar Disorders. ISSN 1398-5647. 11, p. 11–11.
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Sundet, Kjetil Søren; Vaskinn, Anja; Simonsen, Carmen Elisabeth; Hansen, Charlotte F; Birkenæs, Astrid Brate & Engh, John [Show all 11 contributors for this article] (2008). Timing of neurocognitive decline in schizophrenia and bipolar disorder. Schizophrenia Research. ISSN 0920-9964. 98, p. 36–36.
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Ringen, Petter Andreas; Lagerberg, Trine Vik; Birkenæs, Astrid Brate; Engh, John; Færden, Ann & Jónsdóttir, Halldóra [Show all 12 contributors for this article] (2008). Differences in prevalence and patterns of substance use in schizophrenia and bipolar disorder.
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Nakstad, Per Hjalmar; Server Alonso, Andrès; Engh, J; Jensen, J; Ringen, Petter Andreas & Agatz, Ingrid [Show all 7 contributors for this article] (2007). Incidental findings in research functional magnetic resonance imaging: neuroethical and practical considerations. Neuroradiology. ISSN 0028-3940. 49, p. 79–79.
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Ringen, Petter Andreas (2007). Medisin og psykiatri - stykkevis og delt? Tidsskrift for Den norske legeforening. ISSN 0029-2001. 127, p. 908–910.
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Engh, John; Jonsdottir, Halldora; Birkenæs, Astrid Brate; Ringen, Petter Andreas; Vaskinn, Anja & Ilner, Opjordsmoen Stein E. [Show all 8 contributors for this article] (2006). Assessment of insight in schizophrenia and bipolar disorder. Schizophrenia Research. ISSN 0920-9964. 81.
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Birkenæs, Astrid Brate; Søgaard, Anne Johanne; Engh, John; Jonsdottir, Halldora; Ringen, Petter Andreas & Vaskinn, Anja [Show all 10 contributors for this article] (2006). Socio-demographic characteristics and cardiovascular risk factors in patients with severe mental disorders compared with the general population. Schizophrenia Research. ISSN 0920-9964. 81, p. 39–40.
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Vaskinn, Anja; Birkenæs, Astrid Brate; Engh, John; Jonsdottir, Halldora; Ringen, Petter Andreas & Opjordsmoen, Stein [Show all 9 contributors for this article] (2005). Learning potential as a differentiating variable in schizophrenia. Schizophrenia Bulletin. ISSN 0586-7614. 31.
Published
June 14, 2019 12:32 PM
- Last modified
Sep. 1, 2022 1:12 PM