title: [Determinations of hospitalization from psychiatric ER from S. Gerardo hospital in Monza: epidemiological cross-sectional study].
abstract: OBJECTIVE
  The study aims to identify the predicting factors of hospitalization in patients who come in Emergency Room with psychiatric symptoms.
  
  
  METHODS
  Cross-sectional study using data collected by E.R. of S. Gerardo Hospital in Monza from 1st of June 1995 to 31 May 1997. Inclusion criteria were age older than 18 and the need for psychiatric evaluation. The influence on disposition decision of demographic, clinical and service variables were assessed.
  
  
  METHODS
  Data were collected by a questionnaire designed for the study and administered by a trained psychiatrist. Statistical analysis was performed by univariate analysis and logistic regression.
  
  
  RESULTS
  2076 cases were evaluated. Univariate analysis yielded higher odds of hospitalization for patients between 39 and 48 years of age, unmarried, unemployed, affected by schizophrenia, mood disorders or personality disorders. A linear trend was reported between hospitalization and severity of illness, siucide risk and aggressiveness. While anxiety proved to be a protective factor, hallucination, delusion, lack of insight, psychomotor inhibition, agitation, confusion, destructive behaviour, odd behaviour, abnormal consciousness and previous hospitalization increase inpatient disposition. On Monday and Friday higher frequency of hospitalization was observed. Logistic regression confirm the role of age, symptoms, aggressive behaviour, severity of illness, suicide risk, and among services variables, days of the week.
  
  
  CONCLUSIONS
  Clinical variables proved to be the main predictors of hospitalization, and an important role is played by the availability of outpatients services: hospitalization was more frequent in the days closer the week-end, when the outpatient services are closed.
authors.affiliation: Unità Operative di Psichiatria 36 e 37, Clinica Psichiatrica, Università degli Studi Milano Bicocca, Ospedale S. Gerardo di Monza, Via Donizetti 106, 20052 Monza, Milano. giampixy@tin.it
authors.forename: Emanuela
authors.initials: E
authors.lastname: Giampieri
authors.forename: Alessandra
authors.initials: A
authors.lastname: Ratti
authors.forename: Alessandra
authors.initials: A
authors.lastname: Beretta
authors.forename: Cinzia
authors.initials: C
authors.lastname: Mattavelli
authors.forename: Elena
authors.initials: E
authors.lastname: Ferrarini
authors.forename: Carlo
authors.initials: C
authors.lastname: Pruneri
authors.forename: Italo
authors.initials: I
authors.lastname: Carta
mesh_terms: D000328:Adult; D002391:Catchment Area, Health; D003430:Cross-Sectional Studies; D004637:Emergency Services, Psychiatric / Q000458:organization & administration*; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data; D006769:Hospitals, General; D006801:Humans; D015994:Incidence; D007558:Italy / Q000453:epidemiology; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology* / Q000534:rehabilitation*; D008875:Middle Aged