title: Preventing Patient-to-Worker Violence in Hospitals: Outcome of a Randomized Controlled Intervention.
abstract: To evaluate the effects of a randomized controlled intervention on the incidence of patient-to-worker (Type II) violence and related injury in hospitals.
  
  
  
  Forty-one units across seven hospitals were randomized into intervention (n = 21) and control (n = 20) groups. Intervention units received unit-level violence data to facilitate development of an action plan for violence prevention; no data were presented to control units. Main outcomes were rates of violent events and injuries across study groups over time.
  
  
  
  Six months post-intervention, incident rate ratios of violent events were significantly lower on intervention units compared with controls (incident rate ratio [IRR] 0.48, 95% confidence interval [CI] 0.29 to 0.80). At 24 months, the risk for violence-related injury was lower on intervention units, compared with controls (IRR 0.37, 95% CI 0.17 to 0.83).
  
  
  
  This data-driven, worksite-based intervention was effective in decreasing risks of patient-to-worker violence and related injury.
authors.affiliation: Department of Family Medicine, Michigan State University, East Lansing, Michigan (Dr Arnetz); Department of Public Health and Caring Sciences, Uppsala University, Sweden (Dr Arnetz); Departments of Family Medicine and Public Health Sciences (Dr Arnetz, Ms Hamblin, Dr Janisse) and Psychology, Wayne State University (Ms Hamblin); Detroit Medical Center Occupational Health Services (Mr Russell, Dr Upfal, Ms Essenmacher); Department of Emergency Medicine (Dr Upfal); Institute of Gerontology (Dr Luborsky), Wayne State University, Detroit, Michigan; and Department of Neurobiology, Caring Sciences and Society, Karolinska Institutet (Dr Luborsky), Sweden.
authors.forename: Judith E
authors.initials: JE
authors.lastname: Arnetz
authors.forename: Lydia
authors.initials: L
authors.lastname: Hamblin
authors.forename: Jim
authors.initials: J
authors.lastname: Russell
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Upfal
authors.forename: Mark
authors.initials: M
authors.lastname: Luborsky
authors.forename: James
authors.initials: J
authors.lastname: Janisse
authors.forename: Lynnette
authors.initials: L
authors.lastname: Essenmacher
mesh_terms: D000328:Adult; D005260:Female; D006757:Hospital Units / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008875:Middle Aged; D060051:Occupational Injuries / Q000453:epidemiology* / Q000517:prevention & control*; D011369:Professional-Patient Relations; D015397:Program Evaluation; D011446:Prospective Studies; D064450:Workplace Violence / Q000517:prevention & control* / Q000706:statistics & numerical data*