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Breastfeeding and Child Disability: A Comparison of Siblings from the United States
Working paper   Open access

Breastfeeding and Child Disability: A Comparison of Siblings from the United States

George L Wehby
NBER working paper series, Vol.19940
National Bureau of Economic Research
02/2014
DOI: 10.3386/w19940
url
https://www.nber.org/system/files/working_papers/w19940/w19940.pdfView
Open Access

Abstract

Little is known about whether breastfeeding may prevent disabilities throughout childhood. We evaluate the effects of breastfeeding on child disability using data from the National Survey of Family Growth merged to the National Health Interview Survey for a large nationally representative sample of children aged 1 to 18 years from the U.S. including over 3,000 siblings who are discordant on breastfeeding status/duration. We focus on a mother fixed effect model that compares siblings in order to account for family-level unobservable confounders and employ multiple specifications including a dynamic model that accounts for disability status of the prior child. Breastfeeding the child for a longer duration is associated with a lower risk of child disability, by about 0.2 percentage-points per month of breastfeeding. This effect is only observed on the intensive margin among breastfed children, as any breastfeeding has no effect on the extensive margin. We conclude that very short breastfeeding durations are unlikely to have an effect on reducing disability risk.

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