Paternal factors to the offspring birth weight: the 829 birth cohort study.

OBJECTIVE To investigate the contributions of parental, especially paternal factors to the offspring birth weight. METHODS Eligible 829 live-born, singleton children living in Hubei, China were recruited. Birth weight were measured immediately after birth and information about the parents were collected by face-to-face interview using questionnaire. Association between parental factors and birth weight was evaluated using univariate linear regression and multinomial logistic regression models. RESULTS Fathers living in the rural area had offspring with higher risk of low birth weight when compared with fathers who live in the capital city. Maternal lower education, lower gestational weight gain, being primipara and shorter gestational age were risk factors for low birth weight. In addition, Mothers with the history of chronic disease had higher risk to deliver a low birth weight baby. On the contrary, women who increased non-staple food consumption during pregnancy had higher risk to have a macrosomic pregnancy. However, lifestyle factors including diet, exercise, screen time, drinking and smoking from both maternal and paternal exhibited little influence on fetal birth weight. CONCLUSION Paternal as well as maternal factors exert influence on the fetal birth weight, although maternal factors make bigger contributions. Compared with socioeconomic and obstetric factors, lifestyle before and during pregnancy has less influence on fetal birth weight, suggested that special attention should be paid to antenatal care for the pregnant women with lower socioeconomic status in rural area.