Cent Eur J Public Health 2021, 29(4):284-289 | DOI: 10.21101/cejph.a6770
Infant feeding practices and asthma in children aged 6 months to 5 years using a propensity score approach
- 1 College of Public Health, University of South Florida, Tampa, Florida, United States of America
- 2 College of Medicine and Health Sciences, Abia State University, Uturu, Nigeria
- 3 Department of Biological Sciences, East Tennessee State University, Johnson City, Tennessee, United States of America
Objectives: We examined the association between exclusive breastfeeding, early introduction of feeding formula, early weaning, and asthma in children aged six months to five years in a sample of non-institutionalized US children using a propensity score approach.
Methods: Our study used data from the National Survey of Children's Health (2012-2018) of 3,820 children with physician-diagnosed asthma aged 6 months to 5 years. Propensity score matching (PSM) was applied to control selection bias with age, sex, race, birth weight, Federal Poverty Level, parent's education, and parent smoking history used as covariates in PSM. The total number in the matched sample was 6,904 (3,452 non-asthmatics; 3,452 asthmatics). Matched and unmatched samples were analysed using the χ2 test and multiple logistic regression.
Results: Exclusive breastfeeding was protective against asthma in the pre-matching (AOR 0.72; 95% CI: 0.54-0.97; p = 0.03) and post-matching (AOR 0.66; 95% CI: 0.55-0.81; p < 0.001) samples. Formula feeding before 6 months was associated with asthma in unmatched (AOR 1.38; 95% CI: 1.15-1.66; p < 0.001) and matched (AOR 1.31; 95% CI: 1.16-1.47; p < 0.001) sample. Early weaning before 6 months was associated with asthma in unmatched (AOR 1.62; 95% CI: 1.35-1.54; p < 0.001) and matched sample (AOR 1.37; 95% CI: 1.23-1.54; p < 0.001).
Conclusion: Public health systems should continue to recommend the implementation of the World Health Organization exclusive breastfeeding guideline in developed countries. Asthma interventions in children under two years should continue to emphasize exclusive breastfeeding to reduce the incidence of infant asthma.
Keywords: asthma, breastfeeding, formula feeding, propensity score matching
Received: February 18, 2021; Revised: October 9, 2021; Accepted: October 9, 2021; Published: December 31, 2021 Show citation
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