Petter Andreas Ringen

UNVERIFIED PROFILE

Are you Petter Andreas Ringen?   Register this Author

Register author

Petter Andreas Ringen

Publications by authors named "Petter Andreas Ringen"

Are you Petter Andreas Ringen?   Register this Author

19Publications

-Reads

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 Res 2018 May 31;267:140-147. Epub 2018 May 31.

Clinic of mental health and addiction, Oslo University Hospital, Ulleval, Oslo 0407, Norway; NORMENT KG Jebsen Centre for Psychosis Research, Institute of Clinical Medicine, University of Oslo, Oslo 0318, Norway.

View Article
May 2018

Tidsskr Nor Laegeforen 2018 02 5;138(3). Epub 2018 Feb 5.

View Article
February 2018

Duration of untreated illness in first-treatment bipolar I disorder in relation to clinical outcome and cannabis use.

Psychiatry Res 2016 12 28;246:762-768. Epub 2016 Oct 28.

NORMENT, KG Jebsen Centre for Psychosis Research, Division of Mental Health and Addiction, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Norway TOP Study, Oslo University Hospital, Building 49, Ullevål, Kirkeveien 166, PO Box 4956 Nydalen, 0424 Oslo, Norway. Electronic address:

View Article
December 2016

Cannabis use is associated with 3years earlier onset of schizophrenia spectrum disorder in a naturalistic, multi-site sample (N=1119).

Schizophr Res 2016 Jan 9;170(1):217-21. Epub 2015 Dec 9.

Division of Psychiatry, Haukeland University Hospital, Bergen, Norway; Department of Clinical Psychology, University of Bergen, Norway.

View Article
January 2016

Increased mortality in schizophrenia due to cardiovascular disease - a non-systematic review of epidemiology, possible causes, and interventions.

Front Psychiatry 2014 26;5:137. Epub 2014 Sep 26.

NORMENT, KG Jebsen Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo , Oslo , Norway ; Division of Mental Health and Addiction, Oslo University Hospital , Oslo , Norway.

View Article
October 2014

One year follow-up of alcohol and illicit substance use in first-episode psychosis: does gender matter?

Compr Psychiatry 2014 Feb 19;55(2):274-82. Epub 2013 Oct 19.

KG Jebsen Centre for Psychosis Research, Institute of Clinical Medicine, Psychiatry Section, University of Oslo, Oslo, Norway; Department of Psychiatric Research, Diakonhjemmet Hospital, Oslo, Norway.

View Article
February 2014

Indications of a dose-response relationship between cannabis use and age at onset in bipolar disorder.

Psychiatry Res 2014 Jan 30;215(1):101-4. Epub 2013 Oct 30.

NORMENT Centre for Psychosis Research, Oslo University Hospital and Institute of Clinical Medicine, University of Oslo, Oslo, Norway.

View Article
January 2014

Medication adherence in outpatients with severe mental disorders: relation between self-reports and serum level.

J Clin Psychopharmacol 2010 Apr;30(2):169-75

Section for Psychosis Research, Department of Psychiatry, Oslo University Hospital-Ulleval, Oslo, Norway.

View Article
April 2010

Dyslipidemia independent of body mass in antipsychotic-treated patients under real-life conditions.

J Clin Psychopharmacol 2008 Apr;28(2):132-7

Section for Psychosis Research, Division of Psychiatry, Ulleval University Hospital and Institute of Psychiatry, Oslo, Norway.

View Article
April 2008

[Medicine and psychiatry--in part and divided?].

Tidsskr Nor Laegeforen 2007 Mar;127(7):908-10

Avdeling for forskning og undervisning, Psykiatrisk divisjon, Ullevål universitetssykehus, 0407 Oslo.

View Article
March 2007

[Models and trends in psychiatry--should neurobiology form a common basis?].

Tidsskr Nor Laegeforen 2002 Aug;122(20):2024-7

Klinikk for psykiatri Aker universitetssykehus 0320 Oslo.

View Article
August 2002