The purpose of this study is to evaluate the effectiveness of state agencies current peer group systems, and to provide guidance to state agencies on how to evaluate and update their systems. Specifically, it uses empirical analysis to identify one or more effective models for establishing vendor peer groups that could apply to most state agencies.

This study was the first in a series of studies that estimated the extent of retailer-level SNAP benefit trafficking. The major findings included large stores having only half the store violation rate that smaller stores had. Additionally, the overall benefit trafficking rate was 13.0% as compared to 1.3% in the latest trafficking rate study.