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Exploiting externalities to estimate the long-term effects of early childhood deworming

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  • Ozier, Owen

Abstract

This paper investigates whether a large-scale deworming intervention aimed at primary school pupils in western Kenya had long-term effects on young children in the region. The paper exploits positive externalities from the program to estimate the impact on younger children who did not receive treatment directly. Ten years after the intervention, large cognitive effects are found -- comparable to between 0.5 and 0.8 years of schooling -- for children who were less than one year old when their communities received mass deworming treatment. Because mass deworming was administered through schools, effects are estimated among children who were likely to have older siblings in schools receiving the treatment directly; in this subpopulation, effects are nearly twice as large.

Suggested Citation

  • Ozier, Owen, 2014. "Exploiting externalities to estimate the long-term effects of early childhood deworming," Policy Research Working Paper Series 7052, The World Bank.
    • Handle: RePEc:wbk:wbrwps:7052
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    References listed on IDEAS

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    Cited by:

    1. Cilliers, Jacobus & Kasirye, Ibrahim & Leaver, Clare & Serneels, Pieter & Zeitlin, Andrew, 2018. "Pay for locally monitored performance? A welfare analysis for teacher attendance in Ugandan primary schools," Journal of Public Economics, Elsevier, vol. 167(C), pages 69-90.
    2. Joan Hamory Hicks & Michael Kremer & Edward Miguel, 2015. "The Case for Mass Treatment of Intestinal Helminths in Endemic Areas," PLOS Neglected Tropical Diseases, Public Library of Science, vol. 9(10), pages 1-5, October.
    3. Greg Fischer & Dean Karlan & Margaret McConnell & Pia Raffler, 2014. "To Charge or Not to Charge: Evidence from a Health Products Experiment in Uganda," Working Papers 1041, Economic Growth Center, Yale University.
    4. Levine, David I. & Riggs, William & Steffen, Kelsey, 2017. "Rapid prototyping a school-based health program in the developing world," Development Engineering, Elsevier, vol. 2(C), pages 68-81.
    5. Meredith, Jennifer & Robinson, Jonathan & Walker, Sarah & Wydick, Bruce, 2013. "Keeping the doctor away: Experimental evidence on investment in preventative health products," Journal of Development Economics, Elsevier, vol. 105(C), pages 196-210.
    6. Anett John & Kate Orkin, 2022. "Can Simple Psychological Interventions Increase Preventive Health Investment?," Journal of the European Economic Association, European Economic Association, vol. 20(3), pages 1001-1047.
    7. Baldwin Kate & Bhavnani Rikhil R., 2015. "Ancillary Studies of Experiments: Opportunities and Challenges," Journal of Globalization and Development, De Gruyter, vol. 6(1), pages 113-146, June.
    8. Kazianga, Harounan & de Walque, Damien & Alderman, Harold, 2014. "School feeding programs, intrahousehold allocation and the nutrition of siblings: Evidence from a randomized trial in rural Burkina Faso," Journal of Development Economics, Elsevier, vol. 106(C), pages 15-34.
    9. Janet Currie & Tom Vogl, 2013. "Early-Life Health and Adult Circumstance in Developing Countries," Annual Review of Economics, Annual Reviews, vol. 5(1), pages 1-36, May.
    10. Amrita Ahuja & Sarah Baird & Joan Hamory Hicks & Michael Kremer & Edward Miguel & Shawn Powers, 2015. "When Should Governments Subsidize Health? The Case of Mass Deworming," The World Bank Economic Review, World Bank, vol. 29(suppl_1), pages 9-24.
    11. Figlio, David N. & Karbownik, Krzysztof & Özek, Umut, 2023. "Sibling Spillovers May Enhance the Efficacy of Targeted School Policies," IZA Discussion Papers 16250, Institute of Labor Economics (IZA).
    12. Richard Akresh & Emilie Bagby & Damien de Walque & Harounan Kazianga, "undated". "Child Labor, Schooling, and Child Ability (Professional Paper)," Mathematica Policy Research Reports bac9373fb1b34111a24aa3147, Mathematica Policy Research.
    13. Kevin Croke & Joan Hamory Hicks & Eric Hsu & Michael Kremer & Ricardo Maertens & Edward Miguel & Witold Więcek, 2016. "Meta-Analysis and Public Policy: Reconciling the Evidence on Deworming," NBER Working Papers 22382, National Bureau of Economic Research, Inc.
    14. Baird, Sarah & Hamory Hicks, Joan & Ozier, Owen, 2020. "Randomized control trial as social observatory: A case study," World Development, Elsevier, vol. 127(C).
    15. Baldwin, Kate & Bhavnani, Rikhil R., 2013. "Ancillary Experiments: Opportunities and Challenges," WIDER Working Paper Series 024, World Institute for Development Economic Research (UNU-WIDER).
    16. Joan Hamory & Edward Miguel & Michael W. Walker & Michael Kremer & Sarah J. Baird, 2020. "Twenty Year Economic Impacts of Deworming," NBER Working Papers 27611, National Bureau of Economic Research, Inc.
    17. repec:pri:rpdevs:currie_vogl_ar is not listed on IDEAS
    18. Croke,Kevin & Hicks,Joan Hamory & Hsu,Eric & Kremer,Michael Robert & Miguel,Edward A., 2016. "Does mass deworming affect child nutrition ? meta-analysis, cost-effectiveness, and statistical power," Policy Research Working Paper Series 7921, The World Bank.
    19. Pascaline Dupas & Edward Miguel, 2016. "Impacts and Determinants of Health Levels in Low-Income Countries," NBER Working Papers 22235, National Bureau of Economic Research, Inc.
    20. Pamela Jakiela & Owen Ozier & Lia Fernald & Heather Knauer, 2020. "Big Sisters," Working Papers 559, Center for Global Development.
    21. Richard Akresh & Emilie Bagby & Damien de Walque & Harounan Kazianga, "undated". "Child Labor, Schooling, and Child Ability (Presentation)," Mathematica Policy Research Reports 3a260bbbddf24704a8a35fce7, Mathematica Policy Research.
    22. Owen Ozier, 2021. "Replication Redux: The Reproducibility Crisis and the Case of Deworming [Economics of Mass Deworming Programs]," The World Bank Research Observer, World Bank, vol. 36(1), pages 101-130.
    23. Akresh, Richard & Bagby, Emilie & de Walque, Damien & Kazianga, Harounan, 2012. "Child labor, schooling, and child ability," Policy Research Working Paper Series 5965, The World Bank.
    24. Cameron, Lisa & Chase, Claire & Haque, Sabrina & Joseph, George & Pinto, Rebekah & Wang, Qiao, 2021. "Childhood stunting and cognitive effects of water and sanitation in Indonesia," Economics & Human Biology, Elsevier, vol. 40(C).
    25. McWay, Ryan & Prabhakar, Pallavi & Ellis, Ayo, 2022. "The Impact of Early Childhood Development Interventions on Children’s Health in Developing Countries: A Systematic Review and Meta-analysis," Discussion Paper Series in Economics 14/2022, Norwegian School of Economics, Department of Economics.

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    More about this item

    Keywords

    Disease Control&Prevention; Health Monitoring&Evaluation; Educational Sciences; Youth and Governance; School Health;
    All these keywords.

    JEL classification:

    • I12 - Health, Education, and Welfare - - Health - - - Health Behavior
    • I18 - Health, Education, and Welfare - - Health - - - Government Policy; Regulation; Public Health
    • I21 - Health, Education, and Welfare - - Education - - - Analysis of Education
    • I26 - Health, Education, and Welfare - - Education - - - Returns to Education
    • I28 - Health, Education, and Welfare - - Education - - - Government Policy
    • J13 - Labor and Demographic Economics - - Demographic Economics - - - Fertility; Family Planning; Child Care; Children; Youth
    • O15 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Economic Development: Human Resources; Human Development; Income Distribution; Migration

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