Abstract
Violence risk is a major challenge among acute psychiatric inpatients. The study aimed to predict violent behavior risk in an acute psychiatric ward using video recordings from the emergency department. 69 videos of the emergency department recording the first ten minutes following patients' arrivals were included. Psychiatrists watched the videos, completed relevant Brief Psychiatric Rating Scale items and answered intuitive questions about each patient's risk of violence. Demographic and clinical data were also collected. Motoric mannerisms as rated in the BPRS significantly differed between violent and non-violent patients (p < 0.05). Additionally, we found a significant correlation between intuitive prediction of violence and actual violence (p = 0.008). Violent behavior was predicted in 42.1% of the cases by the intuitive evaluation compared to 11.5% mistakenly evaluated patients. Logistic regression revealed that the intuitive question and the BPRS items regarding tension and motoric mannerism created a successful model for predicting violence with 88.2% sensitivity and 72.5% specificity. We sought to define the factors that most accurately predict violence in the acute psychiatric ward, based solely on behavior in the emergency department. Intuitive impressions of clinicians and motoric mannerisms should be considered when evaluating patients for potential violent behavior.