title: A prospective study of aggression among psychiatric patients in rehabilitation wards.
abstract: OBJECTIVE
  The aim of the study was to determine, among patients in rehabilitation wards, the prevalence and nature of aggressive behaviour and the relationship between aggressive behaviour and patient characteristics and ward factors.
  
  
  METHODS
  The aggressive behaviour of all 220 inpatients within the rehabilitation program of a large psychiatric hospital in Victoria was assessed using the Staff Observation Aggression Scale.
  
  
  RESULTS
  Physical assaults occurred at a rate of 97.6 per 100 patients per year. About 40% of all incidents appeared to be unprovoked. Most physical incidents involved use of body parts and use of a weapon was uncommon. Aggression was most often directed at a staff member. Serious injury was rare. Aggressive behaviour was correlated with gender and duration of admission for the whole sample; however, there were different correlates of aggressive behaviour for different ward populations and different types of aggression. As for ward variables, time of day but not patient/staffing level was associated with aggressive behaviour.
  
  
  CONCLUSIONS
  There was a high rate of aggressive behaviour among patients in rehabilitation wards; this should be taken into consideration in the planning of their community placement. The findings also caution against aggregating different ward populations and types of aggressive behaviour for research.
authors.affiliation: North Eastern Metropolitan Psychiatric Services Academic Unit, Rosanna, Victoria, Australia.
authors.forename: P
authors.initials: P
authors.lastname: Cheung
authors.forename: I
authors.initials: I
authors.lastname: Schweitzer
authors.forename: V
authors.initials: V
authors.lastname: Tuckwell
authors.forename: K C
authors.initials: KC
authors.lastname: Crowley
mesh_terms: D000328:Adult; D000368:Aged; D000374:Aggression / Q000523:psychology*; D001714:Bipolar Disorder / Q000453:epidemiology / Q000523:psychology / Q000534:rehabilitation; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D015994:Incidence; D007297:Inpatients / Q000523:psychology / Q000706:statistics & numerical data*; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology / Q000523:psychology / Q000534:rehabilitation*; D008875:Middle Aged; D019965:Neurocognitive Disorders / Q000453:epidemiology / Q000523:psychology / Q000534:rehabilitation; D010351:Patient Discharge; D011618:Psychotic Disorders / Q000453:epidemiology / Q000523:psychology / Q000534:rehabilitation; D012559:Schizophrenia / Q000453:epidemiology / Q000534:rehabilitation; D012565:Schizophrenic Psychology; D012931:Social Environment; D014739:Victoria / Q000453:epidemiology; D014754:Violence / Q000523:psychology / Q000706:statistics & numerical data*