The impact of secondhand smoke on neonatal biometric outcomes and gestational age in Hungary
Ildiko RakoczAndrea Fogarasi-GrenczerPeter TakacsPeter Balazs
摘要：Prenatal second-hand tobacco smoke（SHS） is a serious problem in Hungary’s four underdeveloped north-eastern counties with considerable ethnic Roma population. In this study, we aimed to explore the consequences of at-home SHS exposure on the neonates’ obstetrical outcomes. We collected dates of mothers delivered with live born babies 2009-2011（n=16,859） in Hungary’s four underdeveloped counties. The neonates’ biometric measures were obtained from medical records（birth weight, body length, head and chest circumference, gestational age）. Maternal demographic and sociocultural data were obtained by in-person surveys with mothers. The response rate was 74.5%. We conducted binary logistic regression analysis of maternal variables for SHS exposure, frequency analysis for central tendencies and dispersion and t-probes for comparing means of neonatal data using significance level p<0.05（IBM-SPSS v.23 program）. In the non-smoking sample（n=8,497） pregnant women exposed to SHS were typically less educated（OR=3.32, 95%CI=2.64-4.18）, of Roma ethnicity（OR=1.71, 95%CI=1.36-2.15）, living without amenities（OR=1.70, 95%CI=1.37-2.11） and of extramarital status（OR=1.52, 95%CI=1.27-1.82）. The negative difference of birth weight by fetal SHS exposure was 154.9 gram（95%CI=-188.5-121.3）, that of body length 0.8 cm（95%CI=-1.0-0.6）, of head and chest circumference 0.5 cm（95%CI=-0.6-0.3, and 0.7-0.3 respectively）. Gestational age was shortened by 0.4 week. We conclude that at-home SHS exposure has a significant impact on biometric and obstetrical parameters of new born babies. Tobacco related programs for pregnant women must also focus on SHS exposure, eliminating of which is essential in lower socioeconomic status households as well.