In pairwise comparisons , the LNS group had greater mean birth weight ( +85 g ; P = 0.040 ) , WAZ ( +0.19 ; P = 0.045 ) , and BMIZ ( +0.21 ; P = 0.035 ) and a lower risk of low birth weight ( RR : 0.61 , 95 % CI : 0.39 , 0.96 ; P = 0.032 ) than did the IFA group .