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.

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

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). 

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.

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.

The study evaluated the effectiveness of three innovative approaches to nutrition education in the Special Supplemental Nutrition Program for Women, Infants, and Children. Two of these education innovations were designed for educating prenatal women; the third focused on nutrition education for 3- and 4-year-old WIC participants. This executive summary and report describe the evaluation and results of the educational interventions for prenatal women.

The WIC and Head Start programs share common goals. Both programs strive to promote positive health and nutrition status for young families. Both programs provide young children and families with nutritious foods, health and nutrition education, and assistance in accessing on-going preventive health care. In many communities, WIC and Head Start serve the same families. By working together, programs have an opportunity to coordinate these services and maximize use of scarce resources (e.g., funding, staff, space). Working together can mean minimizing duplicative efforts on the part of families and staff; more opportunities for WIC and Head Start to benefit from each program’s strengths, expertise and best practices; and ultimately, more ways to make a positive impact on good health and nutrition for children and families.

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.