[Validation and comparison of four instruments to detect partner violence in health-care setting]

To validate four instruments to detect domestic violence in health-care settings against external criteria -Index of Spouse Abuse (ISA), Psychological Maltreatment of Women Inventory short form (PMWI-SF), Woman Abuse Screening Tool (WAST), Partner Violence Screen (PVS)- and to assess the concordance and compare the diagnostic accuracy.

This was a case-control study. The study sample was recruited from primary care and domestic violence centers. The ISA, PMWI-SF, WAST and PVS were administered to 223 controls and 182 intimate partner violence cases. Received Operating Characteristic (ROC) curve analysis was carried out. Measures were compared in terms of ROC curves and overall agreement.

The areas under the curve (AUC) were: ISA 0.99 (IC 95%, 0.98-0.99), PMWI-SF 0.98 (IC 95% 0.97-0.99), WAST 0.95 (IC 95% 0.93-0.97), PVS 0.91 (IC 95% 0.87-0.94). The overall agreement between the four tools was excellent (Fleiss Kappa=0.82). The ISA and the PMWI-SF performed slightly better than WAST, and these three instruments performed better than PVS for detecting domestic violence. The PVS had lower concordance values with the other instruments.

The four instruments demonstrated adequate diagnostic accuracy and overall agreement for detect domestic violence. Some overestimation of sensitivity may occur due to different source of cases.