title: [Prognostic factors for schizophrenia during first psychotic episode].
abstract: OBJECTIVE
  Reviewing the available literature regarding prognosis for first psychotic episode for developing schizophrenia.
  
  
  METHODS
  A systematic review of studies which have evaluated prognostic determinants for the first psychotic episode and its relationship to schizophrenia was made.
  
  
  RESULTS
  161 articles were reviewed which fulfilled the search criteria and which were adjusted to the purpose of the study.
  
  
  CONCLUSIONS
  Duration of untreated psychosis (DUP), pre-morbid functioning level, the presence or predominance of negative symptoms, co-morbid consumption of psychoactive substances and psychosocial state were the most influential characteristics for developing schizophrenia in patients presenting a first psychotic episode.
authors.affiliation: Centro de investigaciones de investigaciones del sistema nervioso (CISNE).
authors.forename: Juan F
authors.initials: JF
authors.lastname: Cano
authors.forename: Marco
authors.initials: M
authors.lastname: Fierro-Urresta
authors.forename: Claudia R
authors.initials: CR
authors.lastname: Vanegas
authors.forename: Marcela
authors.initials: M
authors.lastname: Alzate
authors.forename: Ana
authors.initials: A
authors.lastname: Olarte
authors.forename: Ricardo
authors.initials: R
authors.lastname: Cendales
authors.forename: Rodrigo N
authors.initials: RN
authors.lastname: Córdoba
mesh_terms: D006801:Humans; D011379:Prognosis; D011618:Psychotic Disorders / Q000453:epidemiology*; D012559:Schizophrenia / Q000453:epidemiology*