Summary This OSF archive includes materials for the analysis of optimal individualized treatment on growth outcomes by environmental enteric dysfunction and pathogen status in the WASH Benefits Bangladesh trial (NCT01590095). The principal investigator for the Bangladesh trial is Stephen Luby at Stanford University. The coordinating principal investigator for the overall WASH Benefits study is Jack Colford at UC Berkeley. This archive includes the trial's pre-specified analysis plan for the stress biomarkers and child development outcomes. The archive will make public additional study materials, including full replication files for the stress biomarkers and child development analysis (clean datasets with metadata, final analysis scripts), at the time that these outcomes are published in a peer-reviewed journal. Additional Information The trial was funded by the Bill & Melinda Gates Foundation through a grant to the University of California, Berkeley (OPPGD759). If you have questions about files in this archive, please contact Zach Butzin-Dozier (zbutzin@berkeley.edu), Audrie Lin (audrielin@berkeley.edu) or Andrew Mertens (amertens@berkeley.edu).