About the Authors

Steven Brownstone

Contributed equally to this work with: Steven Brownstone, Alison Connor, Daniel Stein

Roles Data curation, Formal analysis, Methodology, Writing – review & editing

Affiliation IDinsight, San Francisco, California, United States of America

Alison Connor

Contributed equally to this work with: Steven Brownstone, Alison Connor, Daniel Stein

Roles Formal analysis, Funding acquisition, Methodology, Supervision, Writing – review & editing

Affiliation IDinsight, San Francisco, California, United States of America

Daniel Stein

Contributed equally to this work with: Steven Brownstone, Alison Connor, Daniel Stein

Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Writing – review & editing

daniel.stein@idinsight.org

Affiliation IDinsight, San Francisco, California, United States of America

Competing Interests

SB, AC, and DS received funding from GiveWell to complete this research. The was executed as a grant from GiveWell to IDinsight (https://www.givewell.org/charities/IDinsight/may-2017-grant), who was the employer of all three researchers during this project. This does not alter our adherence to PLOS ONE policies on sharing data and materials.