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

https://arctichealth.org/en/permalink/ahliterature277445
Source
Schizophr Res. 2016 Jan;170(1):217-21
Publication Type
Article
Date
Jan-2016
Author
Siri Helle
Petter Andreas Ringen
Ingrid Melle
Tor-Ketil Larsen
Rolf Gjestad
Erik Johnsen
Trine Vik Lagerberg
Ole A Andreassen
Rune Andreas Kroken
Inge Joa
Wenche Ten Velden Hegelstad
Else-Marie Løberg
Source
Schizophr Res. 2016 Jan;170(1):217-21
Date
Jan-2016
Language
English
Publication Type
Article
Keywords
Adult
Age of Onset
Cannabis
Family
Female
Humans
Male
Marijuana Abuse - complications - epidemiology
Norway - epidemiology
Psychotic Disorders - complications - epidemiology
Regression Analysis
Schizophrenia - complications - epidemiology
Sex Factors
Young Adult
Abstract
Patients with schizophrenia spectrum disorders and substance use may have an earlier onset of illness compared to those without substance use. Most previous studies have, however, too small samples to control for confounding variables and the effect of specific types of substances. The present study aimed to examine the relationship between substance use and age at onset, in addition to the influence of possible confounders and specific substances, in a large and heterogeneous multisite sample of patients with schizophrenia spectrum disorders.
The patients (N=1119) were recruited from catchment areas in Oslo, Stavanger and Bergen, Norway, diagnosed according to DSM-IV and screened for substance use history. Linear regression analysis was used to examine the relationship between substance use and age at onset of illness.
Patients with substance use (n=627) had about 3years earlier age at onset (23.0years; SD 7.1) than the abstinent group (n=492; 25.9years; SD 9.7). Only cannabis use was statistically significantly related to earlier age at onset. Gender or family history of psychosis did not influence the results.
Cannabis use is associated with 3years earlier onset of psychosis.
PubMed ID
26682958 View in PubMed
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Early Predictors of Ten-Year Course in First-Episode Psychosis.

https://arctichealth.org/en/permalink/ahliterature279449
Source
Psychiatr Serv. 2016 Apr 01;67(4):438-43
Publication Type
Article
Date
Apr-01-2016
Author
Svein Friis
Ingrid Melle
Jan Olav Johannessen
Jan Ivar Røssberg
Helene Eidsmo Barder
Julie Horgen Evensen
Ulrik Haahr
Wenche Ten Velden Hegelstad
Inge Joa
Johannes Langeveld
Tor Ketil Larsen
Stein Opjordsmoen
Bjørn Rishovd Rund
Erik Simonsen
Per Wiggen Vaglum
Thomas H McGlashan
Source
Psychiatr Serv. 2016 Apr 01;67(4):438-43
Date
Apr-01-2016
Language
English
Publication Type
Article
Keywords
Adult
Denmark - epidemiology
Disease Progression
Female
Humans
Longitudinal Studies
Male
Middle Aged
Norway - epidemiology
Outcome Assessment (Health Care) - statistics & numerical data
Prognosis
Psychotic Disorders - diagnosis - drug therapy - epidemiology
Remission Induction
Schizophrenia - diagnosis - drug therapy - epidemiology
Social Skills
Time Factors
Abstract
Identifying patients at risk of poor outcome at an early stage of illness can aid in treatment planning. This study sought to create a best-fit statistical model of known baseline and early-course risk factors to predict time in psychosis during a ten-year follow-up period after a first psychotic episode.
Between 1997 and 2000, 301 patients with DSM-IV nonorganic, nonaffective first-episode psychosis were recruited consecutively from catchment area-based sectors in Norway and Denmark. Specialized mental health personnel evaluated patients at baseline, three months, and one, two, five, and ten years (N=186 at ten years). Time in psychosis was defined as time with scores =4 on any of the Positive and Negative Syndrome Scale items P1, P3, P5, P6, and G9. Evaluations were retrospective, based on clinical interviews and all available clinical information. During the first two years, patients were also evaluated by their clinicians at least biweekly. Baseline and early-course predictors of long-term course were identified with linear mixed-model analyses.
Four variables provided significant, additive predictions of longer time in psychosis during the ten-year follow-up: deterioration in premorbid social functioning, duration of untreated psychosis (DUP) of =26 weeks, core schizophrenia spectrum disorder, and no remission within three months.
First-episode psychosis patients should be followed carefully after the start of treatment. If symptoms do not remit within three months with adequate treatment, there is a considerable risk of a poor long-term outcome, particularly for patients with a deterioration in premorbid social functioning, a DUP of at least half a year, and a diagnosis within the core schizophrenia spectrum.
PubMed ID
26567932 View in PubMed
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Long-term follow-up of the TIPS early detection in psychosis study: effects on 10-year outcome.

https://arctichealth.org/en/permalink/ahliterature126256
Source
Am J Psychiatry. 2012 Apr;169(4):374-80
Publication Type
Article
Date
Apr-2012
Author
Wenche Ten Velden Hegelstad
Tor K Larsen
Bjørn Auestad
Julie Evensen
Ulrik Haahr
Inge Joa
Jan O Johannesen
Johannes Langeveld
Ingrid Melle
Stein Opjordsmoen
Jan Ivar Rossberg
Bjørn Rishovd Rund
Erik Simonsen
Kjetil Sundet
Per Vaglum
Svein Friis
Thomas McGlashan
Author Affiliation
Division of Psychiatry, Stavanger University Hospital, Regional Center for Clinical Research in Psychosis, Health West, Norway. wenchetenvelden@me.com
Source
Am J Psychiatry. 2012 Apr;169(4):374-80
Date
Apr-2012
Language
English
Publication Type
Article
Keywords
Adult
Denmark
Early Diagnosis
Female
Follow-Up Studies
Humans
Male
Norway
Outcome and Process Assessment (Health Care) - statistics & numerical data
Prognosis
Psychotic Disorders - diagnosis
Abstract
Early detection in first-episode psychosis confers advantages for negative, cognitive, and depressive symptoms after 1, 2, and 5 years, but longitudinal effects are unknown. The authors investigated the differences in symptoms and recovery after 10 years between regional health care sectors with and without a comprehensive program for the early detection of psychosis.
The authors evaluated 281 patients (early detection, N=141) 18 to 65 years old with a first episode of nonaffective psychosis between 1997 and 2001. Of these, 101 patients in the early-detection area and 73 patients in the usual-detection area were followed up at 10 years, and the authors compared their symptoms and recovery.
A significantly higher percentage of early-detection patients had recovered at the 10-year follow-up relative to usual-detection patients. This held true despite more severely ill patients dropping out of the study in the usual-detection area. Except for higher levels of excitative symptoms in the early-detection area, there were no symptom differences between the groups. Early-detection recovery rates were higher largely because of higher employment rates for patients in this group.
Early detection of first-episode psychosis appears to increase the chances of milder deficits and superior functioning. The mechanisms by which this strategy improves the long-term prognosis of psychosis remain speculative. Nevertheless, our findings over 10 years may indicate that a prognostic link exists between the timing of intervention and outcome that deserves additional study.
Notes
Comment In: Am J Psychiatry. 2012 Sep;169(9):992; author reply 992-322952080
Comment In: Am J Psychiatry. 2012 Apr;169(4):345-722476671
PubMed ID
22407080 View in PubMed
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Treated incidence and baseline characteristics of substance induced psychosis in a Norwegian catchment area.

https://arctichealth.org/en/permalink/ahliterature105958
Source
BMC Psychiatry. 2013;13:319
Publication Type
Article
Date
2013
Author
Melissa A Weibell
Inge Joa
Jørgen Bramness
Jan Olav Johannessen
Patrick D McGorry
Wenche Ten Velden Hegelstad
Tor Ketil Larsen
Author Affiliation
Regional Centre for Clinical Research in Psychosis, TIPS, Stavanger University Hospital, Armauer Hansensvei, 4014 Stavanger, Norway. weim@sus.no.
Source
BMC Psychiatry. 2013;13:319
Date
2013
Language
English
Publication Type
Article
Keywords
Adolescent
Adult
Comorbidity
Female
Humans
Incidence
Male
Middle Aged
Norway - epidemiology
Psychoses, Substance-Induced - diagnosis - epidemiology - therapy
Psychotic Disorders - diagnosis - epidemiology
Substance-Related Disorders - diagnosis - epidemiology
Abstract
Substance misuse is a well-recognized co-morbidity to psychosis and has been linked to poor prognostic outcomes in patients. Researchers have yet to investigate the difference in rates and characteristics between first-episode Substance Induced Psychosis (SIP) and primary psychosis. We aimed at comparing patients with SIP to primary psychosis patients with or without substance misuse at baseline.
Thirty SIP patients, 45 primary psychosis patients with substance misuse (PS) and 66 primary psychosis patients without substance misuse (PNS) in a well-defined Norwegian catchment area were included from 2007-2011. Assessments included symptom levels (PANSS), diagnostic interviews (SCID), premorbid function scale (PAS) and global functioning (GAF f/s).
Treated incidence for SIP was found to be 6.5/100 000 persons per year, 9.7/100 000 persons per year for PS and 24.1/100 000 persons per year for PNS (15-65 yrs). Patients who had substance misuse (PS and SIP) were more likely to be male. Duration of Untreated Psychosis (DUP) was significantly shorter in the SIP group (5.0 wks., p?=?0.003) and these had more positive symptoms on the PANSS (p?=?0.049). SIP patients also did poorer on early youth academic levels on the PAS.
Yearly treated incidence of SIP is 6.5/100 000 persons per year in a Norwegian catchment area. SIP patients have short DUPs, are more likely to be male, have more positive symptoms at baseline and poorer premorbid academic scores in early adolescence. Follow-up will evaluate stability of diagnosis and characteristics.
PubMed ID
24279887 View in PubMed
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Treatment and violent behavior in persons with first episode psychosis during a 10-year prospective follow-up study.

https://arctichealth.org/en/permalink/ahliterature259887
Source
Schizophr Res. 2014 Jul;156(2-3):272-6
Publication Type
Article
Date
Jul-2014
Author
Johannes Langeveld
Stål Bjørkly
Bjørn Auestad
Helene Barder
Julie Evensen
Wenche Ten Velden Hegelstad
Inge Joa
Jan Olav Johannessen
Tor Ketil Larsen
Ingrid Melle
Stein Opjordsmoen
Jan Ivar Røssberg
Bjørn Rishovd Rund
Erik Simonsen
Per Vaglum
Thomas McGlashan
Svein Friis
Source
Schizophr Res. 2014 Jul;156(2-3):272-6
Date
Jul-2014
Language
English
Publication Type
Article
Keywords
Adult
Antipsychotic Agents - therapeutic use
Crime
Denmark - epidemiology
Follow-Up Studies
Humans
Logistic Models
Middle Aged
Multivariate Analysis
Norway - epidemiology
Prevalence
Prospective Studies
Psychiatric Status Rating Scales
Psychotherapy
Psychotic Disorders - diagnosis - epidemiology - therapy
Risk
Substance-Related Disorders - epidemiology
Violence
Young Adult
Abstract
First episode psychosis (FEP) patients have an increased risk for violence and criminal activity prior to initial treatment. However, little is known about the prevalence of criminality and acts of violence many years after implementation of treatment for a first episode psychosis.
To assess the prevalence of criminal and violent behaviors during a 10-year follow-up period after the debut of a first psychosis episode, and to identify early predictors and concomitant risk factors of violent behavior.
A prospective design was used with comprehensive assessments of criminal behavior, drug abuse, clinical, social and treatment variables at baseline, five, and 10-year follow-up. Additionally, threatening and violent behavior was assessed at 10-year follow-up. A clinical epidemiological sample of first-episode psychosis patients (n=178) was studied.
During the 10-year follow-up period, 20% of subjects had been apprehended or incarcerated. At 10-year follow-up, 15% of subjects had exposed others to threats or violence during the year before assessment. Illegal drug use at baseline and five-year follow-up, and a longer duration of psychotic symptoms were found to be predictive of violent behavior during the year preceding the 10-year follow-up.
After treatment initiation, the overall prevalence of violence in psychotic patients drops gradually to rates close to those of the general population. However, persistent illicit drug abuse is a serious risk factor for violent behavior, even long after the start of treatment. Achieving remission early and reducing substance abuse may contribute to a lower long-term risk for violent behavior in FEP patients.
PubMed ID
24837683 View in PubMed
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