title: Assessing the reliability, predictive and construct validity of historical, clinical and risk management-20 (HCR-20) in Mexican psychiatric inpatients.
abstract: BACKGROUND
  Assessing dangerousness to gauge the likelihood of future violent behaviour has become an integral part of clinical mental health practice in forensic and non-forensic psychiatric settings, one of the most effective instruments for this being the Historical, Clinical and Risk Management-20 (HCR-20).
  
  
  OBJECTIVE
  To examine the HCR-20 factor structure in Mexican psychiatric inpatients and to obtain its predictive validity and reliability for use in this population.
  
  
  METHODS
  In total, 225 patients diagnosed with psychotic, affective or personality disorders were included. The HCR-20 was applied at hospital admission and violent behaviours were assessed during psychiatric hospitalization using the Overt Aggression Scale (OAS). Construct validity, predictive validity and internal consistency were determined.
  
  
  RESULTS
  Violent behaviour remains more severe in patients classified in the high-risk group during hospitalization. Fifteen items displayed adequate communalities in the original designated domains of the HCR-20 and internal consistency of the instruments was high.
  
  
  CONCLUSIONS
  The HCR-20 is a suitable instrument for predicting violence risk in Mexican psychiatric inpatients.
authors.affiliation: a Fray Bernardino Alvarez" Psychiatric Hospital , Mexico City , Mexico ;
authors.forename: Andrea
authors.initials: A
authors.lastname: Sada
authors.affiliation: b Directorate of Epidemiological and Social Research , "Ramón de la Fuente Muñíz" National Institute of Psychiatry , Mexico City , Mexico ;
authors.forename: Rebeca
authors.initials: R
authors.lastname: Robles-García
authors.affiliation: c Clinical Research Division , "Ramón de la Fuente Muñíz" National Institute of Psychiatry , Mexico City , Mexico ;
authors.forename: Nicolás
authors.initials: N
authors.lastname: Martínez-López
authors.affiliation: d Multidisciplinary Academic Division , Universidad Juárez Autónoma de Tabasco , Comalcalco , Tabasco , Mexico.
authors.forename: Rafael
authors.initials: R
authors.lastname: Hernández-Ramírez
authors.affiliation: d Multidisciplinary Academic Division , Universidad Juárez Autónoma de Tabasco , Comalcalco , Tabasco , Mexico.
authors.forename: Carlos-Alfonso
authors.initials: CA
authors.lastname: Tovilla-Zarate
authors.affiliation: a Fray Bernardino Alvarez" Psychiatric Hospital , Mexico City , Mexico ;
authors.forename: Fernando
authors.initials: F
authors.lastname: López-Munguía
authors.affiliation: a Fray Bernardino Alvarez" Psychiatric Hospital , Mexico City , Mexico ;
authors.forename: Enrique
authors.initials: E
authors.lastname: Suárez-Alvarez
authors.affiliation: a Fray Bernardino Alvarez" Psychiatric Hospital , Mexico City , Mexico ;
authors.forename: Xochitl
authors.initials: X
authors.lastname: Ayala
authors.affiliation: c Clinical Research Division , "Ramón de la Fuente Muñíz" National Institute of Psychiatry , Mexico City , Mexico ;
authors.forename: Ana
authors.initials: A
authors.lastname: Fresán
mesh_terms: D000328:Adult; D000374:Aggression / Q000523:psychology; D005260:Female; D005544:Forecasting; D006760:Hospitalization; D006778:Hospitals, Psychiatric; D006801:Humans; D007297:Inpatients / Q000523:psychology*; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology*; D008800:Mexico / Q000453:epidemiology; D008875:Middle Aged; D044382:Population Groups; D015203:Reproducibility of Results; D012308:Risk Management / Q000379:methods*; D014754:Violence / Q000523:psychology*; D055815:Young Adult
keywords: Assessment; mental disorders; validation; violence risk