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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 ten 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.
Authors

Research Fellow Institute for Fiscal Studies
Laura is a Research Fellow at IFS. Her current work focuses on tax and social protection policy and programme evaluation in developing countries.

Associate Director
Britta is an IFS Associate Director, Associate Staff at the Department of Economics at the UC and Researcher at NIHR Obesity Policy Research Unit.

Research Associate University of Chile
Pamela is a Research Associate of the IFS and Assistant Professor of Economics at the Department of Industrial Engineering at the University of Chile.

Research Fellow City, University of London
Bansi is a Research Fellow of the IFS, a Senior Lecturer of Economics at the City, University of London and also a Fellow at the Global Labor Organisa

Angus Phimister
Journal article details
- DOI
- doi.org/10.1086/735106
- Publisher
- Institute for Fiscal Studies
Suggested citation
Abramovsky, L. et al (2025), 'Complementarities in the production of child health', Journal of Human Capital, https://doi.org/doi.org/10.1086/735106
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