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Petter Andreas Ringen
Petter Andreas Ringen
Department Head and Professor of Psychiatry at Oslo University Hospital and the University of Oslo
Verified email at medisin.uio.no
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Year
Increased mortality in schizophrenia due to cardiovascular disease–a non-systematic review of epidemiology, possible causes, and interventions
PA Ringen, JA Engh, AB Birkenaes, I Dieset, OA Andreassen
Frontiers in psychiatry 5, 96336, 2014
4142014
Neurocognitive dysfunction in bipolar and schizophrenia spectrum disorders depends on history of psychosis rather than diagnostic group
C Simonsen, K Sundet, A Vaskinn, AB Birkenaes, JA Engh, A Færden, ...
Schizophrenia bulletin 37 (1), 73-83, 2011
3572011
The level of cardiovascular risk factors in bipolar disorder equals that of schizophrenia: a comparative study
AB Birkenaes, S Opjordsmoen, C Brunborg, JA Engh, H Jonsdottir, ...
Journal of Clinical Psychiatry 68 (6), 917-923, 2007
2392007
Neurocognitive profiles in bipolar I and bipolar II disorder: differences in pattern and magnitude of dysfunction
C Simonsen, K Sundet, A Vaskinn, AB Birkenaes, JA Engh, CF Hansen, ...
Bipolar disorders 10 (2), 245-255, 2008
2252008
Predictors of medication adherence in patients with schizophrenia and bipolar disorder
H Jónsdóttir, S Opjordsmoen, AB Birkenaes, C Simonsen, JA Engh, ...
Acta Psychiatrica Scandinavica 127 (1), 23-33, 2013
2002013
Delusions are associated with poor cognitive insight in schizophrenia
JA Engh, S Friis, AB Birkenaes, H Jónsdóttir, O Klungsøyr, PA Ringen, ...
Schizophrenia bulletin 36 (4), 830-835, 2010
1522010
Medication adherence in outpatients with severe mental disorders: relation between self-reports and serum level
H Jónsdóttir, S Opjordsmoen, AB Birkenaes, JA Engh, PA Ringen, ...
Journal of clinical psychopharmacology 30 (2), 169-175, 2010
1502010
Fighting stigma of mental illness in midsize European countries
A Beldie, JA Den Boer, C Brain, E Constant, ML Figueira, I Filipcic, ...
Social psychiatry and psychiatric epidemiology 47, 1-38, 2012
1432012
The effect of gender on emotion perception in schizophrenia and bipolar disorder
A Vaskinn, K Sundet, S Friis, C Simonsen, AB Birkenaes, JA Engh, ...
Acta Psychiatrica Scandinavica 116 (4), 263-270, 2007
1422007
Dyslipidemia independent of body mass in antipsychotic-treated patients under real-life conditions
AB Birkenaes, KI Birkeland, JA Engh, A Faerden, H Jonsdottir, PA Ringen, ...
Journal of clinical psychopharmacology 28 (2), 132-137, 2008
1402008
Measuring cognitive insight in schizophrenia and bipolar disorder: a comparative study
JA Engh, S Friis, AB Birkenaes, H Jónsdóttir, PA Ringen, T Ruud, ...
BMC psychiatry 7, 1-7, 2007
1132007
Excessive substance use in bipolar disorder is associated with impaired functioning rather than clinical characteristics, a descriptive study
TV Lagerberg, OA Andreassen, PA Ringen, AO Berg, S Larsson, I Agartz, ...
BMC psychiatry 10, 1-9, 2010
1082010
Differences in prevalence and patterns of substance use in schizophrenia and bipolar disorder
PA Ringen, TV Lagerberg, AB Birkenaes, J Engn, A Faerden, H Jonsdottir, ...
Psychological Medicine 38 (9), 1241-1249, 2008
1062008
Excessive cannabis use is associated with earlier age at onset in bipolar disorder
TV Lagerberg, K Sundet, SR Aminoff, AO Berg, PA Ringen, ...
European archives of psychiatry and clinical neuroscience 261, 397-405, 2011
1042011
Opposite relationships between cannabis use and neurocognitive functioning in bipolar disorder and schizophrenia
PA Ringen, A Vaskinn, K Sundet, JA Engh, H Jonsdottir, C Simonsen, ...
Psychological Medicine 40 (8), 1337-1347, 2010
962010
Opposite relationships between cannabis use and neurocognitive functioning in bipolar disorder and schizophrenia
PA Ringen, A Vaskinn, K Sundet, JA Engh, H Jonsdottir, C Simonsen, ...
Psychological Medicine 40 (8), 1337-1347, 2010
952010
Cannabis use is associated with 3 years earlier onset of schizophrenia spectrum disorder in a naturalistic, multi-site sample (N= 1119)
S Helle, PA Ringen, I Melle, TK Larsen, R Gjestad, E Johnsen, ...
Schizophrenia research 170 (1), 217-221, 2016
932016
Emotion perception and learning potential: mediators between neurocognition and social problem-solving in schizophrenia?
A Vaskinn, K Sundet, S Friis, C Simonsen, AB Birkenaes, H Jonsdottir, ...
Journal of the International Neuropsychological Society 14 (2), 279-288, 2008
892008
The level of illicit drug use is related to symptoms and premorbid functioning in severe mental illness
PA Ringen, I Melle, AB Birkenaes, JA Engh, A Faerden, A Vaskinn, S Friis, ...
Acta Psychiatrica Scandinavica 118 (4), 297-304, 2008
822008
Illicit drug use in patients with psychotic disorders compared with that in the general population: a cross‐sectional study
PA Ringen, I Melle, AB Birkenaes, JA Engh, A Faerden, H Jonsdottir, ...
Acta Psychiatrica Scandinavica 117 (2), 133-138, 2008
762008
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