Objectives: We conducted this study to investigate the risk factors for spontaneous abortion among rural Chinese women.
Methods: Risk factors prior to pregnancy associated with spontaneous abortion were identified among 17,248 rural women enrolled in a prospective population-based follow-up study. The risk of spontaneous abortion was estimated with odds ratio (OR) and 95% confidence interval (CI) for several factors. A nonconditional logistic regression analysis was then performed to identify the independently associated factors.
Results: The total sample of this study population consisted of 17,248 pregnant women including 921 of them whose pregnancies resulted in spontaneous abortion and the incidence of spontaneous abortion was 5.04%. After the adjustment of confounding factors, menarche age, serum creatinine, family genetic diseases or maternal congenital defects was associated with an increased risk of spontaneous abortion while folic acid supplementation reduced the risk among rural Chinese women.
Conclusions: The findings of our study suggest that multiple modifiable factors may increase the risk of spontaneous abortion which may help relevant departments better to guide detailed effectively prevention strategies toward spontaneous abortion to improve the reproductive quality of rural population. Further studies are required to elaborate these risk factors for spontaneous abortion.
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