Children of mothers with 6years of schooling had lower under-five mortality , but the EMMS supplementation reduced the social difference in mortality risk ( using standard program and schooling < 6years as reference ; standard program and schooling 6years HR 0.54 , 95 % CI 0.27-1 .11 ; EMMS and schooling 6years HR 0.28 , 95 % CI 0.12-0 .70 ; EMMS and schooling < 6years HR 0.26 , 95 % CI 0.11-0 .63 ) , adjusted for maternal age ( years ) , parity and body mass index ( kg/m2 ) at week 8 pregnancy .