Using the HCR-20 to Predict Aggressive Behavior among Men with Schizophrenia Living in the Community: Accuracy of Prediction, General and Forensic Settings, and Dynamic Risk Factors

Research output: Contribution to journalArticle


The HCR-20 is widely used to assess risk of violence among patients with schizophrenia. Further understanding of the accuracy and changes over time in C and R scores is needed. Using prospectively collected data on 248 men with schizophrenia, the present study found that the HCR-20 significantly predicted aggressive behavior over 24 months. The H, C, R, HCR-20 total, and final risk judgment scores were unable to predict aggressive behavior better than chance among the general psychiatric patients in the first six months after discharge. Changes in three C items, the total R score, and in three R items significantly predicted changes in aggressive behavior.


  • Steven F. Michel
  • Muhammad Riaz
  • Christopher Webster
  • Stephen D. Hart
  • Sten Levander
  • Ruediger Mueller-Isberner
  • Jari Tiihonen
  • Eila Repo-Tiihonen
  • Eva Tuninger
  • Sheilagh Hodgins
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Psychiatry


  • HCR-20, schizophrenia, aggressive behavior, predictive accuracy, dynamic, risk factors
Original languageEnglish
Pages (from-to)1-13
JournalInternational Journal of Forensic Mental Health
Issue number1
Publication statusPublished - 2013
Publication categoryResearch