There was no difference on low birth weight prevalence ( primary study outcome ) between groups ( 360/2 ,778 [ 13.0 % ] ) for MQ group and 177/1 ,398 ( 12.7 % ) for SP group ; risk ratio [ RR ] , 1.02 ( 95 % CI 0.86-1 .22 ; p = 0.80 in the ITT analysis ) .