This supplemental issue of Pediatrics presents the first set of results from the Infant Feeding Practices Study II (IFPS II), which were chosen to cover a wide range of the topics included in the study. The IFPS II was conducted collaboratively by the Food and Drug Administration and the Centers for Disease Control and Prevention (CDC) and was co-funded by other agencies in the Department of Health and Human Services, as indicated in “Acknowledgments.”
The design of the IFPS II was similar to that of the original study (the IFPS I), which was conducted in 1992–1993. In the current longitudinal survey, a large cohort of 4900 women was enrolled prenatally, and >2000 were followed through the first year of their infant's life. The mothers were mailed 1 prenatal and 10 postnatal questionnaires at approximate monthly intervals; in addition, prenatal and postnatal subsamples were administered a dietary intake questionnaire. The questionnaires were modeled on the IFPS I, but the IFPS II included several new topics such as postpartum depression, consumption of herbal and alternative medicines, breast-pump use, and infant sleeping arrangements. The details of the study methods and a list of publications from the IFPS I are presented in an article by Fein et al1 in this supplement.
Why an IFPS II? In the decade since the IFPS I, significant changes have occurred in the products, policies, information, and education related to infant feeding choices. Breast pumps have become more effective and more affordable; new ingredients have been added to infant formula; and changes in state and federal laws have reduced some barriers to breastfeeding. Policies and recommendations about infant feeding (duration and exclusivity) have changed. In 2004–2006, the Department of Health and Human Services conducted a national breastfeeding-promotion campaign, the impact of which had to be evaluated. Thus, the …
Address correspondence to Sara B. Fein, PhD, Food and Drug Administration, Center for Food Safety and Applied Nutrition, 5100 Paint Branch Pkwy, HFS 020, College Park, MD 20740. E-mail: