Skip to main content
Resource | Research and Data | Assessing/Improving Operations WIC Participant and Program Characteristics 2012

This report is a census of women, infants, and children who were participating in the WIC program in April, 2012. The report includes information on participant income and nutrition risk characteristics, and estimates breastfeeding initiation rates for WIC infants.

12/11/2013
Resource | Research and Data | Assessing/Improving Operations WIC Food Package Cost Report, FY 2010

This report estimates the average monthly food costs for each of 5 WIC participant subgroups and estimates total dollars spent on 17 major categories of WIC-eligible foods in FY 2010. The participant and food level costs in this report are USDA’s first estimates since implementation of the 2009 WIC food package changes.

08/21/2013
Resource | Research and Data | Payment Accuracy and Program Integrity WIC Erroneous Payments to Vendors: Annual Estimates for FY 2011

This report provides improper payment estimates for fiscal year 2011 using a methodology for “aging” the 2005 bookend study. The methodology yields nationally representative estimates of the number of vendors that over- and undercharged and the amount of over- and undercharges across all WIC vendors.

12/01/2012
Resource | Research and Data | Breastfeeding Evaluation of the Birth Month Breastfeeding Changes to the WIC Food Packages

In 2006, FNS asked the Institute of Medicine to review the WIC food packages. The IOM proposed major changes to improve nutrition and encourage breastfeeding but also expressed the concern that changes related to partial breastfeeding may have unintended consequences. The IOM recommended that FNS conduct an impact study evaluating the birth month breastfeeding changes to the WIC food packages. 

01/05/2012
Resource | Research and Data | Assessing/Improving Operations Effects of WIC: A Review of Recent Research

This report begins with an overview of the WIC program, including its administrative structure and benefits, and a detailed description of the literature search protocol used to identify the studies included.

01/02/2012
Resource | Research and Data | Demonstrations An Evaluation of the Prime Vendor Pilot of the Food Distribution Program on Indian Reservations

The Prime Vendor Pilot was conducted as part of USDA's Business Process Re-engineering efforts to improve the administration and operation of the Food Distribution Program on Indian Reservations. Under this pilot, USDA partnered with the Department of Defense, which had an existing contract with commercial vendors and distributors.

04/01/2004
Page updated: September 16, 2025