Factors That Influence Children's Exits from the Special Supplemental Nutrition Program for Women, Infants, and Children: A Systematic Review.

The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) provides supplemental foods and nutritional education to low-income women and children up to the age of five. Despite evidence that WIC improves diet and nutrition and the nationwide availability of this program, many participants exit WIC before they are no longer eligible for benefits. To date no study has systematically reviewed factors that influence participants' exits from WIC.