Complementarities in the Production of Child Health
利用菲律宾纵向数据，研究水、卫生和营养对6-24个月儿童身高体重的互补作用，发现改善卫生环境能提高营养摄入对儿童生长的效果。
We estimate flexible child health production functions to investigate whether more hygienic environments, characterized by better water, sanitation, and hygiene (WASH) practices, make nutrition intake more productive for the physical growth of children aged 6–24 months. Using 10 rounds of exceptionally rich longitudinal Filipino cohort data, we estimate value-added production functions with a control function approach. We show that WASH and nutrition are complements in the formation of child height and weight. Nutritional and WASH conditions faced by sample children are similar to those currently encountered by poor children in low-income settings with comparable stunting rates.