The total sample size is 1204. Sample size calculations were based on two outcome measures: expected reduction in diarrheal morbidity and growth (improvements in height-for-age). Sample size estimates for detecting a 0.5 cm change in height in children provided a caloric and non caloric micronutrient supplement using a design effect of 2, power of 0.80, alpha of 0.05 and assuming an attrition rate of 15%, the required sample size per group was 301.