title: Validity of hospital admission as an outcome measure of services for first-episode psychosis.
abstract: OBJECTIVE
  The objective of this study was to assess the external validity of hospitalization as an outcome measure for first-episode psychosis services.
  
  
  METHODS
  A two-year, prospective cohort design was used to examine the associations between hospitalization, general psychopathology, and quality of life in a cohort of 606 participants treated for a first episode of psychosis.
  
  
  RESULTS
  In bivariate analyses, general psychopathology and quality of life were each significantly associated with hospitalization at both time points. After analyses controlled for all covariates in the logistic models, both clinical measures continued to be significantly correlated with hospitalization at both one and two years.
  
  
  CONCLUSIONS
  These results validate hospitalization as an outcome measure for first-episode psychosis services, and they extend the existing research showing a relationship between hospitalization and process measures to include other valid and reliable clinical measures.
authors.affiliation: Department of Psychiatry, University of Calgary, 2nd Floor, Special Services Bldg., Foothills Medical Centre, 1403 29th St., N.W., Calgary, Alberta T2N 2T9, Canada. addingto@ucalgary.ca
authors.forename: Donald Emile
authors.initials: DE
authors.lastname: Addington
authors.forename: Emily
authors.initials: E
authors.lastname: McKenzie
authors.forename: JianLi
authors.initials: J
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002170:Canada; D015331:Cohort Studies; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D016015:Logistic Models; D008297:Male; D008605:Mental Health Services / Q000592:standards*; D008875:Middle Aged; D010043:Outcome and Process Assessment, Health Care / Q000379:methods / Q000592:standards*; D015397:Program Evaluation; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000523:psychology / Q000628:therapy*; D011788:Quality of Life; D012559:Schizophrenia / Q000628:therapy; D055815:Young Adult