For two groups , the rate of caesarean section was 12.7 % and 18.5 % , the mean body weight gain per week after 34 weeks of gestational age ( 0.41 0.13 ) and ( 0.56 0.09 ) kg , the labor pain score are 6.1 1.9 and 7.6 2.3 , the duration of labor ( 12 4 ) and ( 15 6 ) h , the neonatal birth weight ( 3.4 0.3 ) and ( 3.7 0.6 ) kg and the rate of macrosomia 4.5 % and 7.4 % respectively .