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Resource | Research and Data | Payment Accuracy and Program Integrity 2013 WIC Vendor Management Study

This study is part of a larger FNA effort to ensure WIC program integrity and to comply with the Improper Payments Information Act of 2002 which requires FNA to estimate improper payments in its programs.

11/26/2013
Resource | Research and Data | Payment Accuracy and Program Integrity WIC Vendor Management Study - 1998

The purpose of the study was to learn the extent to which retail grocers, defined as "vendors" in the WIC Program, authorized to provide food to WIC participants, were violating program rules and procedures, and to determine which programmatic and/or demographic variables could be associated with vendor violations.

07/01/2001
Resource | Report to Congress Food Assistance: Research Provides Limited Information on the Effectiveness of Specific WIC Nutrition Services

This report (1) identifies the number and nature of recent studies that have examined the effectiveness of three WIC services—nutrition education, breastfeeding promotion and support, and referral services—and (2) summarizes what the research shows about the effectiveness of these specific nutrition services. 

03/01/2001
Resource | Report to Congress Food Assistance: Performance Measures for Assessing Three WIC Services

GAO Report to Congressional Committees on Food Assistance: Performance Measures for Assessing Three WIC Services

02/01/2001
Page updated: July 21, 2026