In the intervention group , maternal weight gain in the third trimester was 60 % higher ( 8.60 vs. 5.38 kg , p = .011 ) , mean birthweight was 20 % higher ( 2.98 vs. 2.49 kg , p < .001 ) , the rate of low birthweight was 94 % lower ( 2.7 % vs. 44.7 % ; p < .001 ) , and the rate of initiation of breastfeeding within 1 hour after birth was 52 % higher ( 86.0 % vs. 56.7 % , p < .001 ) , in comparison with the control group .