Impact Evaluation of the Cambodia Integrated Nutrition, Hygiene, and Sanitation Project

This is the final report of the impact evaluation of the Cambodia Integrated Nutrition, Hygiene, and Sanitation NOURISH project commissioned by the Center for Water Security, Sanitation and Hygiene in the United States Agency for International Development’s Bureau for Resilience and Food Security (USAID/RFS). The evaluation incorporates a cluster randomized controlled trial (cRCT) with a factorial design to rigorously test the effectiveness of integrating sanitation programming with nutrition services to improve child linear growth and related child health outcomes, as well as whether this integrated approach is more effective than stand-alone nutrition or sanitation interventions.

The findings show that the nutrition interventions, when delivered alone or in combination with sanitation programming, improved child growth. The sanitation interventions did not significantly increase sanitation coverage over the strong secular (non-intervention) trend in the control group and had no effect on child growth or diarrhea. There is no evidence that combining these sanitation and nutrition interventions resulted in increases in child growth over the nutrition programming alone.

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