Exploiting Externalities to Estimate the Long-Term Effects of Early Childhood Deworming

• 成果类型: Article
• 署名作者: Ozier, Owen
• 署名单位: The World Bank
• 刊物名称: AMERICAN ECONOMIC JOURNAL-APPLIED ECONOMICS
• ISSN/ISSBN: 1945-7782
• DOI: 10.1257/app.20160183
• 发表日期: 2018
• 页码: 235-262
• 关键词: helminth infections; preschool-children; HEALTH; CONSEQUENCES; impacts; GROWTH; worms; supplementation; intervention; epidemiology

摘要

I investigate whether a school-based deworming intervention in Kenya had long-term effects on young children. I exploit positive externalities from the program to estimate impacts on younger children who were not directly treated. Ten years after the intervention, I find large cognitive effects-comparable to between 0.5 and 0.8 years of schooling-for children who were less than one year old when their communities received school-based mass deworming treatment. I find no effect on child height or stunting. I also estimate effects among children whose older siblings received treatment directly; in this subpopulation, cognition effects are nearly twice as large.