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Peer Effects on Vaccination: Experimental Evidence from Rural Nigeria

Author

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  • RyokoSato

    (Global Asia Institute, National University of Singapore)

  • Yoshito Takasaki

    (Faculty of Economics, The University of Tokyo)

Abstract

Understanding how and why social interactions matter for people's vaccination behavior is important for disease control. This paper conducts the first causal analysis of peer effects on vaccination in developing countries. We created exogenous variations in peers' vaccination behaviors by randomizing cash incentives for tetanus vaccine take-up among Nigerian women. Vaccine take-up among friends strongly increased women's take-up; having a friend getting vaccinated increases the likelihood that one receives a vaccination by 18.9 percentage points. The peer effects among friends are heterogeneous by one's belief about vaccine safety and access to health clinics in a way that is consistent with whether or not a woman visits a clinic with her friend. This provides evidence for collective action as a mechanism underlying the positive peer effect.

Suggested Citation

  • RyokoSato & Yoshito Takasaki, 2016. "Peer Effects on Vaccination: Experimental Evidence from Rural Nigeria," CIRJE F-Series CIRJE-F-1002, CIRJE, Faculty of Economics, University of Tokyo.
    • Handle: RePEc:tky:fseres:2016cf1002
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    File URL: http://www.cirje.e.u-tokyo.ac.jp/research/dp/2016/2016cf1002.pdf
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    References listed on IDEAS

    as
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    1. repec:hok:dpaper:321 is not listed on IDEAS
    2. Yoko Ibuka & Jun-ichi Itaya & Naomi Miyazato, 2018. "An Analysis of Peer Effects on Vaccination Behavior Using a Model of Privately Provided Public Goods," CESifo Working Paper Series 6933, CESifo.

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