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Updated: Jun 11, 2025

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Published on: July 4, 2013
Aggressive Behaviour Risk Assessment Tool for Hospitalised Patients in Non-Psychiatric Inpatient Units
Son Chae Kim1, Chris Vejnovich2, Lyndsi Hall2
1School of Nursing, Point Loma Nazarene University, San Diego, California, USA.
Aim:
To refine and validate an electronic version of the Aggressive Behaviour Risk Assessment Tool (ABRAT) and determine the sensitivity and specificity for identifying potentially violent patients in non-psychiatric inpatient units.
Design:
A prospective cohort study design was used.
Methods:
All patients admitted or transferred to three inpatient units of an acute care hospital in Nebraska, USA, from 7 February to 9 April 2023, were included. The 10-item ABRAT assessments were performed daily for the first 3 days of admission. The violent events were collected until discharge in three categories: Physical aggression towards others, physical aggression towards property and verbal intimidation/threat towards others. Kendall's tau tests and a multivariate logistic regression procedure were performed to select a parsimonious set of items that best predict violent events.
Results:
Of 1179 patients, 69 had ≥1 violent event (5.9%). The revised six-item tool with item weighting was named ABRAT for Hospitalised Patients (ABRAT-H). The area under the curve from the Receiver Operating Characteristics analysis was 0.82. The sensitivity and specificity at a cutoff score of two were 68.1% and 85.2%, respectively. As ABRAT-H scores increased, the percentage of violent patients also increased and for patients with scores ≥5, 55.2% became violent.
Conclusion:
ABRAT-H appears to be useful for identifying potentially violent patients in non-psychiatric inpatient units with satisfactory sensitivity and specificity.
Implications For Patient Care:
The availability of ABRAT-H may help provide focused preventive measures that target patients at high risk for violence and reduce violent events.
Impact:
A majority of the nursing workforce is employed in acute care hospital setting, and the availability of ABRAT-H can further enhance the culture of a safe work environment and have positive impacts not only on the nurses' physical and mental health but also on the quality of patient care.
Reporting Method:
We have adhered to relevant STROBE guidelines for reporting observational studies.
Patient Or Public Contribution:
No Patient or Public Contribution.
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