In the intervention group , maternal weight gain in the third trimester was @ % higher ( @ vs. @ kg , p = @ ) , mean birthweight was @ % higher ( @ vs. @ kg , p < @ ) , the rate of low birthweight was @ % lower ( @ % vs. @ % ; p < @ ) , and the rate of initiation of breastfeeding within @ hour after birth was @ % higher ( @ % vs. @ % , p < @ ) , in comparison with the control group .