Comparison of three instruments for assessing ongoing intimate partner violence.

Background: Active injury surveillance programs need to address 'ongoing' intimate partner violence (IPV). While the Abuse Assessment Screen (AAS) has been validated for 'present'(within a year) IPV it is not clear that it is valid for 'present' (ongoing) IPV. We have created an OAS (Ongoing Abuse Screen, OAS) by changing the AAS to specifically request information related to 'ongoing' IPV.