Abstract:
Objective To quantitatively evaluate adverse birth outcomes attributable to maternal secondhand smoke exposure in Shanghai residents based on population attributable health effect evaluation method, and to provide scientific evidence for making maternal healthcare policy.
Methods Secondhand smoke exposure data from 2013 Shanghai Non-communicable Disease and Behavioral Risk Factor Surveillance System and relative risk of secondhand smoke exposure from published literatures were used to calculate population attributable risk percent and number of cases with adverse birth outcomes attributable to secondhand smoke exposure.
Results The prevalence rate of secondhand smoke exposure among women of childbearing age in Shanghai was 41.67%, in which 42.15% were registered Shanghai residents and 39.58% were non-registered Shanghai residents, and the prevalence rates of the two groups were increasing with age. The numbers of premature birth, low birth weight, birth asphyxia, and birth defects attributable to secondhand smoke exposure were 2337, 1424, 1146, and 637, respectively. The four indicators for registered Shanghai mothers were 26.11%, 25.40%, 45.63%, and 26.58%, respectively; and the indicators for non-registered Shanghai mothers were 26.58%, 25.83%, 46.14%, and 27.23%, respectively.
Conclusion A high prevalence of secondhand smoke exposure is identified among women of childbearing age in Shanghai. There are a large number of adverse birth outcomes attributable to secondhand smoke exposure. If secondhand smoke exposure is avoided effectively, more than a quarter of adverse birth outcomes will be reduced.
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