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Resource | Research and Data | Assessing/Improving Operations WIC Participant and Program Characteristics 2014

WIC Participant and Program Characteristics 2014 summarizes the demographic characteristics of participants in the Special Supplemental Nutrition Program for Women, Infants, and Children nationwide in April 2014. 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. PC 2014 is the most recent in a series of reports generated from WIC state management information system data biennially since 1992.

11/23/2015
Resource | Research and Data | Assessing/Improving Operations WIC Breastfeeding Peer Counseling Study: Phase II Follow Up Implementation Report

The main objectives of this report are to describe how Loving Support© Peer Counseling is currently implemented in WIC state agencies and local agencies; and to draw comparisons with the program’s implementation in 2008, when the last study was conducted. 

10/14/2015
Resource | Research and Data | Breastfeeding WIC Infant and Toddler Feeding Practices Study 2 (ITFPS-2): Intention to Breastfeed

The WIC Infant and Toddler Feeding Practices Study 2 (WIC ITFPS-2)/ “Feeding My Baby” Study is designed to describe the feeding practices used by caregivers and measure the nutrition outcomes of children who participate in WIC. The study uses a longitudinal design; caregivers respond to surveys periodically from a prenatal interview through the infant’s third birthday. This study will provide a series of reports. The current report presents results from the prenatal survey.

05/15/2015
Resource | Research and Data | Demonstrations Assessment of the Contributions of an Interview to Supplemental Nutrition Assistance Program Eligibility and Benefit Determinations

This study was designed to assess whether the elimination of the eligibility interview at certification and recertification would have adverse effects on client and worker outcomes. FNS awarded grants to two States—Oregon and Utah—to conduct demonstrations in which the eligibility interviews at certification and recertification were completely eliminated. An analysis of the demonstrations that provide estimates of the contributions of eligibility interviews in determining SNAP eligibility and benefits was conducted.

05/14/2015
Resource | Research and Data | Breastfeeding WIC Breastfeeding Policy Inventory

FNS funded the WIC Breastfeeding Policy Inventory (WIC BPI) to collect data on breastfeeding policies and practices, as well as the breastfeeding measures in use by SAs and LAs. The WIC BPI was a census of the 90 WIC State agencies (including Indian Tribal Organizations (ITOs) and U.S. Territories) and the approximately 1,800 local WIC agencies.

01/12/2015
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 WIC Participant and Program Characteristics 2006

The WIC Participant and Program Characteristics (PC 2006) report summarizes demographic characteristics of WIC participants nationwide in April 2006, 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.

12/01/2007
Resource | Research and Data | Payment Accuracy and Program Integrity NSLP/SBP Access, Participation, Eligibility, and Certification Study – Erroneous Payments in the NSLP and SBP

Program errors and the risk of erroneous payments in the National School Lunch Program (NSLP) and School Breakfast Program (SBP) continue to be a concern. Slightly more than one in five students were certified inaccurately or erroneously denied benefits in school year (SY) 2005-06. New data estimates the gross cost of school meals erroneous payments due to certification error at about $935 million while other operational errors represent about $860 million. 

11/14/2007
Resource | Research and Data | Payment Accuracy and Program Integrity 2005 WIC Vendor Management Study

In 1991 and 1998, FNS conducted national studies of WIC vendors to determine the extent of vendor violation of program rules. After the 1998 study, FNS issued regulations to correct vendor practices. The 2005 study replicates the 1998 study to determine whether the regulations were effective, and to measure the frequency of vendor violations and the degree to which vendors charge accurate prices for WIC transactions.

04/27/2007
Page updated: May 22, 2025