| Low vitamin D is associated with negative and depressive symptoms in psychotic disorders M Nerhus, AO Berg, LR Kvitland, I Dieset, S Hope, SR Dahl, MA Weibell, ... Schizophrenia research 178 (1-3), 44-49, 2016 | 56 | 2016 |
| Indications of a dose–response relationship between cannabis use and age at onset in bipolar disorder TV Lagerberg, LR Kvitland, SR Aminoff, M Aas, PA Ringen, ... Psychiatry research 215 (1), 101-104, 2014 | 54 | 2014 |
| Migrant background and ethnic minority status as predictors for duration of untreated psychosis M Nerhus, AO Berg, M Haram, LR Kvitland, OA Andreassen, I Melle Early Intervention in Psychiatry 9 (1), 61-65, 2015 | 34 | 2015 |
| Cannabis use in first‐treatment bipolar I disorder: relations to clinical characteristics LR Kvitland, I Melle, SR Aminoff, TV Lagerberg, OA Andreassen, ... Early intervention in psychiatry 10 (1), 36-44, 2016 | 33 | 2016 |
| Neurocognitive functioning, clinical course and functional outcome in first‐treatment bipolar I disorder patients with and without clinical relapse: A 1‐year follow‐up study C Demmo, TV Lagerberg, LR Kvitland, SR Aminoff, T Hellvin, C Simonsen, ... Bipolar disorders 20 (3), 228-237, 2018 | 31 | 2018 |
| Continued cannabis use at one year follow up is associated with elevated mood and lower global functioning in bipolar I disorder LR Kvitland, I Melle, SR Aminoff, C Demmo, TV Lagerberg, ... BMC psychiatry 15, 1-7, 2015 | 28 | 2015 |
| Duration of untreated illness in first-treatment bipolar I disorder in relation to clinical outcome and cannabis use LR Kvitland, PA Ringen, SR Aminoff, C Demmo, T Hellvin, TV Lagerberg, ... Psychiatry Research 246, 762-768, 2016 | 27 | 2016 |
| History of psychosis and previous episodes as potential explanatory factors for neurocognitive impairment in first‐treatment bipolar I disorder C Demmo, TV Lagerberg, SR Aminoff, T Hellvin, LR Kvitland, C Simonsen, ... Bipolar disorders 18 (2), 136-147, 2016 | 23 | 2016 |
| Course of neurocognitive function in first treatment bipolar I disorder: One-year follow-up study C Demmo, TV Lagerberg, SR Aminoff, T Hellvin, LR Kvitland, C Simonsen, ... Psychiatry research 249, 286-292, 2017 | 22 | 2017 |
| Neurocognitive performance in first episode bipolar i disorder compared to first episode schizophrenia and healthy controls C Demmo, IM Melle, LK Kvitland, OAA Andreassen, TVL Lagerberg, ... Bipolar Disorders 16, 104-104, 2014 | 2 | 2014 |
| Prevalence of chronic and multisite pain in adolescents and young adults with ADHD: a comparative study between clinical and general population samples (the HUNT study) I Mundal, J Schei, S Lydersen, PH Thomsen, TS Nøvik, LR Kvitland European Child & Adolescent Psychiatry, 1-10, 2023 | | 2023 |
| Cannabis use in early ADHD, a 3-years follow-up study in relations to clinical characteristics LR Kvitland, H Moa, J Schei, S Lydersen, P Thomsen, I Mundal European Psychiatry 65 (S1), S70-S71, 2022 | | 2022 |
| Untreated Bipolar Illness and its Association to Outcome in First Episode Mania I Melle, L Kvitland, C Demmo, S Aminoff, T Hellvin, O Andreassen, ... EARLY INTERVENTION IN PSYCHIATRY 10, 28-28, 2016 | | 2016 |
| Cannabis use in the early phase of bipolar disorder: clinical characteristics in a cross-sectional sample LR Kvitland, PA Ringen, SR Aminoff, M Haram, T Hellvin, TV Lagerberg, ... BIPOLAR DISORDERS 15, 118-118, 2013 | | 2013 |
Ole A. AndreassenProfessor of Medicine, University of Oslo, Oslo University Hospital, Oslo, NorwayVerified email at medisin.uio.no
