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Resource | Research and Data | Participation Characteristics The WIC Participant and Program Characteristics 2012: Food Package Report

The WIC Participant and Program Characteristics 2012: Food Package Report is a supplement to the WIC Participant and Program Characteristics 2012 biennial report. The Food Package Report describes the content of WIC food packages based on information on the packages or prescriptions issued to WIC participants in April 2012. This report is a new report and should be of interest to researchers at USDA, academics, and others who study or have interest in the WIC program and nutrition.

11/12/2014
Data
Estimates of WIC Eligibility and Program Reach

Each year, FNS estimates the number of eligible individuals for WIC during an average month of the calendar year. FNS uses estimates of the number of individuals eligible for WIC and the number likely to participate to better predict future funding needs, measure WIC performance, and identify potentially unmet nutrition assistance needs.

11/03/2014
Resource | Research Plans National and State-Level Estimates of Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) Eligibles and Program Reach, 2011

This report offers updated estimates of the number of people eligible for WIC benefits in 2011, including (1) estimates by participant category (including children by single year of age) and coverage rates; (2) updated estimates in U.S. territories; and (3) confidence intervals. The national estimates presented in this report are based on a methodology developed in 2003 by the Committee on National Statistics of the National Research Council (CNSTAT).

03/20/2014
Resource | Research and Data | Food/Nutrient Analysis Diet Quality of American Young Children by WIC Participation Status: Data from the National Health and Nutrition Examination Survey, 1999-2004

This study uses the most recent data from the National Health and Nutrition Examination Survey (NHANES) to examine the diets of children who received WIC benefits. The report compares the diets of WIC-participant children to the diets of income-eligible nonparticipant children and higher income children who were not eligible for WIC benefits. 

07/01/2008
Resource | Research and Data | Participation Characteristics National Survey of WIC Participants

Since 1992, FNS has produced biennial reports on WIC participant and program characteristics based on the WIC Minimum Data Set compiled from state management information systems. The 20 items included in the MDS are collected as part of ongoing WIC operations and consist primarily of in formation related to participant eligibility.

10/01/2001
Resource | Research and Data | Demonstrations Framework for Dietary Risk Assessment in the WIC Program

This is a report of the National Academies' Institute of Medicine (Food and Nutrition Board), published here by permission.

10/01/2001
Resource | Research and Data | Participation Characteristics Prevalence of Overweight Among WIC Children

This study examines the trends in the prevalence of overweight among WIC children during the 1990s. The study is based on data collected by the biennial WIC Participant and Program Characteristics Studies (1992, 1994, 1996 and 1998). 

07/01/2001
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 | Research and Data | Demonstrations WIC Nutrition Education Demonstration Study: Child Intervention

In 1994, FNS initiated the WIC Nutrition Education Demonstration Study. The demonstration had two components: a comparison of the effects of innovative and traditional WIC nutrition education for prenatal participants; and a study of the feasibility and effectiveness of providing nutrition education to preschool (three-and-four-year-old) WIC participants. The report summarized here describes the design and implementation of the child nutrition education demonstration and presents findings describing the effectiveness of the demonstration.

03/01/2001
Page updated: May 22, 2025