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Abstract Suaahara was an innovative, complex, multi‐sectoral, large‐scale, nutrition programme in Nepal to increase exposure to nutrition‐related information and services, improve nutrition‐related knowledge and practices among pregnant women and mothers of infants and young children, and improve their nutrition. This study evaluated the effectiveness of Suaahara to improve nutrition and nutrition‐related practices by comparing changes over 10 years between intervention and comparison districts. The samples of households at baseline in 2012 and endline in 2022 were 2040 and 2480, respectively, from 120 old wards. The impact was estimated using intent‐to‐treat regression models in which survey year, arm and their interaction were fixed effects, accounting for district clustering, with the interaction estimating differences between arms in changes over time. The intervention, relative to comparison, reduced maternal underweight by 8.43 percentage points ( p < 0.001), consistent with improved maternal and fetal condition that was manifested as the greater length of 0.761 z ‐scores ( p = 0.004) of infants 0–5.9 months. Complementary feeding practices with children between 6 and 23.9 months of age improved more in the intervention than comparison districts: child dietary diversity by 0.294 food groups ( p = 0.072) and minimum dietary diversity by 9.51 percentage points ( p = 0.028), feeding sick child more ( p = 0.002) and administering oral rehydration solution and zinc for diarrhoea ( p = 0.057) by about 17 percentage points each, and minimum meal frequency ( p = 0.004) and minimum acceptable diet ( p = 0.022) by about 15 percentage points each. Substantial impacts were demonstrated despite political restructuring, earthquakes, and other major challenges that Nepal and Suaahara faced and limitations in statistical power because of the reduced number of districts that then could be included in the study. Registered at clinicaltrials.gov with identifier NCT05448287.
Frongillo et al. (Sun,) studied this question.