Although experiments are viewed as the gold standard for evaluation, some of their benefits may be lost when, as is common, outcomes are not defined for some sample members. In evaluations of marriage interventions, for example, a key outcome—relationship quality—is undefined when...

Infants participating in WIC were less likely than nonparticipants to have ever been breastfed or to be currently breastfeeding, and they were more likely to be consuming formula. Mean usual nutrient intakes exceeded the adequate intake for WIC participants, and the percentage with inadequate...

The author reviews the history of the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC), describes WIC eligibility and benefits, presents findings from major WIC evaluations, and offers thoughts on the future WIC research agenda.

This study examines the effects of prenatal WIC participation and the use of prenatal care on Medicaid costs and birth outcomes in five states—Florida, Minnesota, North Carolina, South Carolina, and Texas.

Infants as young as 7 months of age showed food patterns that have been observed in older children and adults. From 18% to 33% of infants and toddlers between ages 7 and 24 months consumed no discrete servings of vegetables, and 23% to 33% consumed no fruits.

For infants under 12 months of age, mean usual intakes exceeded the adequate intake for all nutrients. For toddlers 12 to 24 months of age, the estimated prevalence of inadequacy was low for most nutrients; however, 58% of toddlers had usual vitamin E intakes less than the estimated average...

The author reviews the history of the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC), describes WIC eligibility and benefits, presents findings from major WIC evaluations, and offers thoughts on the future WIC research agenda.

This piece describes Mathematica’s abstinence education evaluation, provides interviews with the evaluation’s two lead authors (Trenholm and Devaney), and offers reflections on the study.

This paper examines the impacts of four abstinence-only education programs on adolescent sexual activity and risks of pregnancy and sexually transmitted diseases (STDs). Based on an experimental design, the impact analysis uses survey data collected in 2005 and early 2006 from more than 2,000...

This piece describes Mathematica’s abstinence education evaluation, provides interviews with the evaluation’s two lead authors (Trenholm and Devaney), and offers reflections on the study.