1. Association of smoke-free laws with preterm or low birth weight deliveries--A multistate analysis
- Author
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Ji, Xu, Cox, Shanna, Grosse, Scott D., Barfield, Wanda D., Armour, Brian S., Courtney-Long, Elizabeth A., and Li, Rui
- Subjects
Influence ,Risk factors ,Low birth weight -- Risk factors ,Premature birth -- Risk factors ,Smoking bans -- Influence ,Birth weight, Low -- Risk factors - Abstract
1 | INTRODUCTION Preterm birth, defined as gestational age less than 37 completed weeks, affects approximately one in 10 births in the US (1) Low birth weight (LBW), defined as [...], Objective: To assess the association between the change in statewide smoke-free laws and the rate of preterm or low birth weight delivery hospitalizations. Data Source: 2002-2013 Healthcare Cost and Utilization Project State Inpatient Databases. Study Design: Quasi-experimental difference-in-differences design. We used multivariate logistic models to estimate the association between the change in state smoke-free laws and preterm or low birth weight delivery hospitalizations. The analyses were also stratified by maternal race/ethnicity to examine the differential effects by racial/ethnic groups. Data Collection/Extraction Methods: Delivery hospitalizations among women aged 15-49 years were extracted using the International Classification of Diseases, Ninth Revision, and Diagnosis-Related Group codes. Principal Findings: Non-Hispanic black mothers had a higher rate of preterm or low birth weight delivery hospitalization than other racial/ethnic groups. Overall, there was no association between the change in smoke-free laws and preterm or low birth weight delivery rate. Among non-Hispanic black mothers, the change in statewide smoke-free laws was associated with a 0.9-1.9 percentage point (P < .05) reduction in preterm or low birth weight delivery rate beginning in the third year after the laws took effect. There was no association among non-Hispanic white mothers. A decline in the black-white disparity of 0.6-1.6 percentage points (P < .05) in preterm or low birth weight delivery rates was associated with the change in state smoke-free laws. Conclusion: The change in state smoke-free laws was associated with a reduction in racial/ethnic disparities in preterm or low birth weight delivery hospitalizations in selected US states. KEYWORDS low birth weight, preterm delivery, racial/ethnic disparity, smoke-free laws
- Published
- 2021
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