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Resource | Research and Data | Food/Nutrient Analysis WIC Infant and Toddler Feeding Practices Study 2 (ITFPS-2): Fourth Year Report

The WIC Infant and Toddler Feeding Practices Study 2 (WIC ITFPS-2)/ “Feeding My Baby” Study is the only national study to capture data on caregivers and their children over the first 6 years of the child's life regardless of their continued participation in WIC. Overall, the study examines child-feeding practices, associations between WIC services and those practices, and the health and nutrition outcomes of children who received WIC around birth. This report, the fifth in the series generated from this study, focuses on the dietary intake patterns and weight status of children during the fourth year of life. The report also examines families' WIC experiences and their perceptions of the program's impact.

09/08/2020
Resource | Research and Data | Assessing/Improving Operations WIC Participant and Program Characteristics 2018

WIC Participant and Program Characteristics 2018 summarizes the demographic characteristics of participants nationwide in April 2018. It includes information on participant income and nutrition risk characteristics, estimates breastfeeding initiation rates for WIC infants, and describes WIC members of migrant farm-worker families.

05/04/2020
Resource | Research and Data | Food/Nutrient Analysis Analysis of WIC Food Package Prescriptions, 1998-2002

The purpose of this report is to illustrate the types and amounts of foods being prescribed within the WIC food package for each category of participants. This report does not provide information on redemption of the food prescriptions, or on actual food consumption; at this time, comprehensive data are available only on food prescriptions.

04/01/2006
Resource | Research and Data | Assessing/Improving Operations WIC Participant and Program Characteristics 2004

The WIC Participant and Program Characteristics (PC 2004) report summarizes demographic characteristics of WIC participants nationwide in April 2004, along with information on participant income and nutrition risk characteristics. A national estimate of breastfeeding initiation for WIC infants is included. The report also describes WIC members of migrant farm-worker families.

03/01/2006
Resource | Research and Data | Food/Nutrient Analysis WIC Food Packages: Time for a Change

This is a report of the National Academies' Institute of Medicine (Food and Nutrition Board), published here by permission. It is also available on the Institute of Medicine website. In response to many concerns about the WIC food packages, FNS asked the Institute of Medicine to conduct a review of the WIC food packages.

02/03/2006
Resource | Research and Data | Participation Rates WIC Program Coverage: How Many Eligible Individuals Participated 1994 to 2003?

Recently, the method used to calculate the number of individuals eligible for the WIC program was evaluated and an improved methodology was developed. These new, improved estimates provide better insight on the WIC program and should help improve the program in the future. The new estimates show that 13.5 million individuals were eligible for WIC and 7.7 million participated in WIC in 2003. This coverage rate of 57% is consistent with trends since 2000 and is similar to the coverage rate found in the Food Stamp Program.

02/01/2006
Resource | Research and Data | Assessing/Improving Operations WIC Staffing Data Collection Project

The project is a component of ongoing FNS efforts to effectively develop administrative data collection on important issues in local level WIC staffing. This WIC Staffing Data Collection pilot project was prompted by a 2001 GAO report that: cited a range of quality of services between local WIC agencies; expressed concern that local agencies may not be able to provide adequate services; and cited a need for improved professionalism and quality of service, as well as enhanced availability of professional staff to provide direct services. 

01/13/2006
Resource | Research Plans Medicaid Policies and Eligibility for WIC

The Food and Nutrition Service (FNS), which administers the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC), asked Mathematica Policy Research to examine more closely Medicaid's role in adjunct eligible for WIC and do not have to show further proof of income to qualify.

10/01/1999
Resource | Research and Data | Participation Rates Estimating the Number of People Eligible for WIC and the Full-Funding Participation Rate: A Review of the Issues

This report reviews recent approaches to estimating the numbers of persons eligible for and participating in WIC. It also describes issues concerning these estimates that may be worthy of review and synthesizes research on these issues.

02/12/1999
Page updated: September 16, 2025