Author Affiliation: Eastern Michigan University, School of Health Sciences, Ypsilanti.
This article was corrected | View correction
I am responding to the April 2011 article by Hernandez et al1 entitled “National School Lunch Program Participation and Sex Differences in Body Mass Index Trajectories of Children From Low-Income Families.” I believe the main exposure, participation in the National School Lunch Program, was incorrectly measured.
Hernandez et al used parental reports of whether children received free or reduced-price lunches at school as a measure of participation in the National School Lunch Program. Eligibility for free and reduced-price meals is based on income and is an indirect measure of socioeconomic status.
Children from all income levels “participate” in the National School Lunch Program. Children who pay for a reimbursable lunch as well as children who receive a free or reduced-price reimbursable lunch should be considered as “participants” in the National School Lunch Program. This study measured eligibility for free and reduced-price lunches as the main exposure, not National School Lunch Program participation. Therefore, the results should be carefully scrutinized.
Correspondence: Dr Rainville, Eastern Michigan University, School of Health Sciences, 335 Marshall Bldg, Ypsilanti, MI 48197 (alicejo.rainville@emich.edu).
Financial Disclosure: None reported.
Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature
Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal
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