Emergency departments have become war zones. Healthcare workers face violence at alarming rates, yet most prediction tools were designed for psychiatric units. Because apparently, violent patients only exist in psych wards.
Emergency departments have turned into battlefields while violence prediction tools pretend psychiatric units are the only danger zones.
The original ABRAT tool worked fine for medical-surgical units, but emergency departments needed something different. Something that could actually handle the chaos of an ED setting. So researchers adapted it specifically for emergency departments, creating a brief screening instrument that busy staff could actually use.
Between May and June 2021, researchers tested this new version on 10,554 patients across multiple sites. They started with 16 expanded ABRAT items and 4 emergency department visit reasons, then used statistical analysis to find what actually mattered. Bivariate Kendall τ tests determined correlations with violent incidents. Logistic regression modeling identified the real predictors.
Out of all those possibilities, 15 met the correlation criterion of r ≥ 0.10. The final tool emerged with seven items: history of aggression, history of mental illness, reason for ED visit, and four behavior indicators. Those behaviors include aggressive or threatening behavior, agitation, staring, and confusion. The ED visit reason counts as one item since patients arrive with one primary complaint. With rural healthcare shortages affecting 20% of Americans, these assessment tools become even more critical for understaffed facilities.
Triage nurses complete the assessment for walk-in patients. Ambulance arrivals get screened during initial nursing assessment. The process integrates into existing workflow without creating additional burdens.
The numbers speak for themselves. The seven-item ABRAT correctly identifies 84.3% of violent patients and 95.3% of non-violent patients. Out of those 10,554 patients, 127 were involved in violent incidents. The original 10-item version showed less than 1% of zero-score patients became violent, compared with 41% of those scoring two or more. Training requirements ensure trained nurses can effectively use the assessment across multiple hospital units.
Inter-rater reliability hit 93% and 96.5% agreement at different cut-off points. Nurses actually agreed on scores, which is remarkable given the subjective nature of behavioral assessment.
Three emergency departments loaded all indicators into their electronic medical records. Researchers are developing automated data collection to make the tool even more user-friendly. Potential applications include activating behavioral emergency response teams when high-risk patients are identified. Because manual data entry in busy EDs is nobody’s favorite task.
