Impacts of classifying New York City students as overweight

Douglas Almond, Ajin Lee, Amy Ellen Schwartz

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

US schools increasingly report body mass index (BMI) to students and their parents in annual fitness "report cards." We obtained 3,592,026 BMI reports for New York City public school students for 2007-2012. We focus on female students whose BMI puts them close to their age-specific cutoff for categorization as overweight. Overweight students are notified that their BMI "falls outside a healthy weight" and they should review their BMI with a health care provider. Using a regression discontinuity design, we compare those classified as overweight but near to the overweight cutoff to those whose BMI narrowly earned them a "healthy" BMI grouping. We find that overweight categorization generates small impacts on girls' subsequent BMI and weight. Whereas presumably an intent of BMI report cards was to slow BMI growth among heavier students, BMIs and weights did not decline relative to healthy peers when assessed the following academic year. Our results speak to the discrete categorization as overweight for girls with BMIs near the overweight cutoff, not to the overall effect of BMI reporting in New York City.

Original languageEnglish (US)
Pages (from-to)3488-3491
Number of pages4
JournalProceedings of the National Academy of Sciences of the United States of America
Volume113
Issue number13
DOIs
StatePublished - Mar 29 2016

Keywords

  • BMI
  • Childhood obesity
  • Fitnessgram
  • New York City
  • Regression discontinuity design

ASJC Scopus subject areas

  • General

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