A Cluster-Randomized Trial to Test Sharing Histories as a Training Method for Community Health Workers in Peru.

backgroundCommunity health workers (CHWs) are increasingly deployed to support mothers' adoption of healthy home practices in low- and middle-income countries. However, little is known regarding how best to train them for the capabilities and cultural competencies needed to support maternal health behavior change. We tested a CHW training method, Sharing Histories (SH), in which CHWs recount their own childbearing and childrearing experiences on which to build new learning.

methodsWe conducted an embedded cluster-randomized trial in rural Peru in 18 matched clusters. Each cluster was a primary health facility catchment area. Government health staff trained female CHWs using SH (experimental clusters) or standard training methods (control clusters). All other training and system-strengthening interventions were equal between study arms. All CHWs conducted home visits with pregnant women and children aged 0-23 months to teach, monitor health practices and danger signs, and refer. The primary outcome was height-for-age (HAZ)<-2 Z-scores (stunting) in children aged 0-23 months. Household surveys were conducted at baseline (606 cases) and 4-year follow-up (606 cases).

resultsMaternal and child characteristics were similar in both study arms at baseline and follow-up. Difference-in-differences analysis showed mean HAZ changes were not significantly different in experimental versus control clusters from baseline to endline (

conclusionCompared with standard training methods, SH may have improved the effectiveness of CHWs as change agents among literate mothers to reduce child stunting. Stunting experienced by the children of illiterate mothers may have involved unaddressed determinants of stunting.