Suchergebnisse

Background: There is a substantial body of evidence supporting the association between maternal active smoking during pregnancy and child development, but the association between prenatal exposure to environmental tobacco smoke (ETS) and early child development has not been well documented. This cross-sectional study examines the association between prenatal exposure to ETS and the development of children in their first two years of life. Methods: We interviewed the primary caregivers of 446 children under two years old in rural Guizhou Province, China. Based on self-reported assessments about whether the mother was exposed to ETS during pregnancy, we divided the children into the ETS-exposed group or the non-exposed group. Sociodemographic information was collected through a questionnaire. The cognitive, language, motor, and socioemotional abilities of children were assessed using the Bayley Scales of Infant Development III (BSID-III). A multivariate linear regression model adjusting for confounding variables was used to estimate the association of interest. Results: About 60% of mothers experienced ETS exposure during pregnancy. Cognitive and language scores were lower among children in the ETS-exposed group. When adjusting for characteristics of the child, the mother, the household, and village fixed effects, prenatal exposure to ETS was associated with lower cognition scores (−3.41; 95% confidence interval (CI): −6.39 to −0.42; p = 0.03) and language scores (−3.01; 95% CI: −5.39 to −0.09; p = 0.04). Frequency of prenatal exposure to ETS was also negatively associated with language development (−0.48; 95% CI: −0.87 to −0.09; p = 0.02) before children reached two years old. Conclusions: Prenatal exposure to ETS is negatively associated with the cognitive and language development of rural young children within their first two years of life. The government should take action to raise public awareness about the negative effects of tobacco use, with an emphasis on the protection of pregnant women and their ...

AbstractThis study estimates the impact of road expansion on off-farm activities in rural China. To achieve this goal, econometric models that capture the impact of road expansion on migration and local off-farm works are developed and estimated using individual data. Estimation results show that road expansion encourages farmers to participate in local off-farm work rather than migrate. In addition, road expansion also has a significant impact on the working time and income of local off-farm work.

This study estimates the impact of road expansion on off-farm activities in rural China. To achieve this goal, econometric models that capture the impact of road expansion on migration and local off-farm works are developed and estimated using individual data. Estimation results show that road expansion encourages farmers to participate in local off-farm work rather than migrate. In addition, road expansion also has a significant impact on the working time and income of local off-farm work. (China Q/GIGA)