[The environment, life style and pregnancy outcome]

Area of Science:

• Environmental Health
• Reproductive Epidemiology
• Public Health

Context:

• Northern Bohemia's mining districts face allegations of impaired pregnancy outcomes due to high pollution levels.
• A comparative study was initiated to investigate these claims by contrasting outcomes in Teplice (high pollution) and Prachatice (low pollution).
• The study design and preliminary findings are presented, considering environmental, lifestyle, and individual exposure factors.

Purpose:

• To compare pregnancy outcomes between a highly polluted mining district (Teplice) and a low-pollution district (Prachatice).
• To evaluate the relative impact of environmental exposure, lifestyle variables, and individual factors on pregnancy outcomes.
• To assess the prevalence of low birth weight and premature birth in relation to pollution, ethnicity, and smoking habits.

Summary:

• A prospective cohort study enrolled 2260 pregnancies, with plans to include all from 1994-1997.
• Preliminary data show significantly higher rates of low birth weight (8.8% vs 4.0%) and premature birth (6.2% vs 3.4%) in Teplice compared to Prachatice.
• Higher prevalence of low birth weight and prematurity were observed among Gypsy births, and a strong correlation was found between maternal smoking and adverse outcomes.

Impact:

• Ethnic structure and smoking habits partially explain outcome differences, but a significant disparity remains even after exclusion.
• The study suggests a potential synergistic effect between smoking and environmental pollution during winter conception periods, exceeding protective mechanisms.
• Findings highlight the complex interplay of environmental factors, lifestyle choices, and ethnic background on adverse pregnancy outcomes, necessitating targeted public health interventions.