title: [Assessing aggression in patients of the mental health crisis service].
abstract: BACKGROUND
  Care workers of the outreach psychiatric crisis team are frequently confronted with aggressive patients. To prevent dangerous situations from developing it could be advantageous to have in place a method of risk assessment that is based on information about patients before they are actually contacted by the crisis team.
  
  
  OBJECTIVE
  To test the predictive validity of an instrument specifically designed to assess the risks of aggression from severely disturbed psychiatric patients before they are seen by the crisis team.
  
  
  METHODS
  Over a period of two years and prior to any outreach contact with patients in crisis situations a Checklist of Risks to the Crisis team (CRC) was completed. Then, following outreach contact with the patient any perceived aggression was recorded by means of the Staff Observation Aggression Scale-Revised (SOAS-R).
  
  
  RESULTS
  Aggressive behaviour by patients was observed during 51 of 499 crisis contacts with members of the outreach crisis team. On the basis of three factors in the CRC, namely the clinical assessment on a visual-analogue scale, an estimate of the number of aggressive persons in the vicinity of the crisis patient concerned and the reporting of crises by the patient himself, it was possible to predict outwardly directed aggression with a sensitivity of 74% and a specificity of 84%.
  
  
  CONCLUSIONS
  Although the findings still need to be reproduced, an instrument such as the crc could be very useful to members of the crisis service.
authors.affiliation: ejm.penterman@ggzoostbrabant.nl
authors.forename: E J M
authors.initials: EJ
authors.lastname: Penterman
authors.forename: H L I
authors.initials: HL
authors.lastname: Nijman
mesh_terms: D000374:Aggression / Q000523:psychology*; D003419:Crisis Intervention; D006801:Humans; D015994:Incidence; D018570:Risk Assessment; D012307:Risk Factors; D012308:Risk Management; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards*; D014754:Violence