Derivation and validation of a short emergency department screening tool for perpetrators of intimate partner violence: the PErpetrator RaPid Scale (PERPS).

Background: There is no short screening tool for perpetrators of intimate partner violence (IPV), although one is needed.

Objective: To retrospectively derive and prospectively validate a brief screening tool for perpetrators of IPV: the PErpetration RaPid Scale (PERPS).

Methods: In the derivation phase of the study, we developed the PERPS based on historical data.