WIC Research, Policy and Practice Hub WIC Research, Policy and Practice Hub

Recruitment and Retention of WIC Participants


The Impact of Prenatal WIC Participation on Infant Mortality and Racial Disparities

This study assessed the impact of WIC services on improving birth outcomes and reducing racial disparities. Results showed that the infant mortality rate (IMR) was lower for WIC participants than for non-WIC participants. For African Americans, the IMR of WIC participants was much lower than that of non-WIC participants. For whites, IMR and preterm birth rates were not improved by WIC participation.


Childhood Morbidities Among Income- and Categorically Eligible WIC Program Participants and Non-Participants

This research explored the associations between childhood morbidities among income-eligible and categorically eligible WIC participant and non-WIC participant groups in a diverse, nationally representative sample of children. According to the results, no significant differences were noted between child WIC participants and non-WIC participants in the following areas: asthma, respiratory illness, severe gastrointestinal illness, or ear infection diagnosis.


Dynamics of WIC Program Participation by Infants and Children, 2001 to 2003

This study analyzed the reasons for entry, exit, re-entry, and continuity of participation in the WIC Program. Most children entered the program as infants. Exit from the program was not linked to a particular age, and Medicaid-enrolled children were less likely to exit WIC early. Infants of the lowest-income families were more likely to continue participation as a child. These results could help inform clinic outreach strategies.


Reassessing the WIC Effect: Evidence from the Pregnancy Nutrition Surveillance System

This study used data from nine states that participate in the Pregnancy Nutrition Surveillance System to address limitations in previous work. Studying the effects of the WIC Program, results suggested that the WIC effect in improving infant health exists, but on fewer margins and with less impact than has been claimed by policy analysts and advocates.


Effects of WIC and Food Stamp Program Participation on Child Outcomes

The researchers examines the relationship between WIC and Food Stamp Program participation on young children's health and mistreatment outcomes. Their analysis used a unique individual-level longitudinal database that linked administrative datasets on WIC and Food Stamp Program participation, Medicaid enrollment and claims, and child abuse and neglect reports in Illinois. Based on the findings, receiving WIC benefits and Food Stamps, jointly or alone, was associated with less child abuse and neglect; was inversely related to the incidence of health problems among low-income children; and was associated with lower risk of being diagnosed with anemia, failure to thrive, and other nutritional deficiencies. For several outcome measures, stronger associations were found among study participants enrolled in WIC.


A Comparison Between Improvers and Non-Improvers Among Children with Anemia Enrolled in the WIC Program

This study investigated the differences between children ages 1 to 5 in the Texas WIC Program who had improved anemia statuses and those who did not. Non-improvers were more likely to be those children who were younger, who lived in families with four or more children, who ate fewer snacks, and who never ate dried fruits. More parents of non-improvers incorrectly believed that their child had improved.


WIC Program Coverage: How Many Eligible Individuals Participated in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC): 1994 to 2003?

This report provided information on the new methodology developed by the National Research Council to estimate rates of eligibility and participation in the WIC Program. The new methodology provided more accurate estimates of the number of people eligible for WIC. The report estimated that 13.5 million individuals were eligible for WIC and that 7.7 million participated in WIC in 2003.