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Figure 2

From: Both maternal and paternal risk factors for term singleton low birthweight infants in rural Chinese population: a population-based, retrospective cohort study

Figure 2

Independent risk factors found in multiple logistic regression analysis. RR = Relative risk. Cl = Confidence interval. The vertical bar represented RR = 1 and horizontal lines represented the range of adjusted RR of each risk factors. The reference group were: No history of varicocele, having regular folic acid intake, negative hepatitis B surface antigen, maternal non-smoking, no history of stillbirth, baby sex = male; RR were adjusted by maternal age and educational level.

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