Correlation of the Fetal Sex of Twin Pregnancy and Gestational Age

Objective To explore the influence of fetus's sex in twin pregnancy on gestation.Methods Retrospectively analyse the 94 cases of twin pregnancy from our hospital during the period from March 2008 to July 2009,which are divided into three groups by fetus's sex of twin male,twin female,a male and a female fpr comparison and analysis of gestation and premature delivery rate.Result No statistical difference in maternal age and average twin body weight(P0.05).Twin male fetuses average gestation 256.84 day,premature delivery rate 58.06%;twin female fetus 263.65 day,16.13%;one male one female 260.76 day,24.24%.The average gestation and premature delivery rate are statistically significantly different between twin male fetuses and twin female fetus(P0.05),Conclusion fetus's sex will influence gestation and premature delivery rate in twin pregnancy,female fetus is one of the premature delivery factors.