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Intra-rater and Interrater Reliability of the Violence Assessment Tool©
Sheryl A Emmerling1, Jeremy S McGarvey, Jill Greenwood-Williamson
1Author Affiliations: Director of Professional Practice and Research, Nursing Administration (Dr Emmerling), Senior Statistician, Department of Healthcare Analytics, (McGarvey), and Director of Clinical Education, Nursing Administration (Dr Greenwood-Williamson), OSF HealthCare, Peoria, IL.
Objective:
The purpose of this study was to determine interrater and intra-rater reliability of the Violence Assessment Tool© (VAT©) for identifying patients at risk for aggressive/violent behavior in 4 patient care settings: acute care, emergency department, ambulatory care, and home care.
Background:
There is a lack of evidence evaluating the psychometric properties of violence risk assessment tools used outside of the behavioral health setting.
Methods:
This psychometric study, using standardized patient vignettes to assess the interrater and intra-rater reliability of the VAT©, was conducted at a large healthcare system in the Midwest and its affiliated simulation center.
Results:
Intraclass correlations indicated good interrater reliability (0.75 or higher) for the overall VAT© score in each of the study settings and good intra-rater reliability looking at the VAT© score-based risk category.
Conclusions:
Based on this study, the VAT© is a reliable instrument for assessing the risk for violent behavior of patients outside the behavioral health setting.
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