Data collected as part of a sub-study of the CHANGE project (Child malnutrition& Adult NCDs-Generating Evidence on mechanistic links in Jamaica, Malawi & Ethiopia to inform future policy/practice). This work was intended to inform future child malnutrition treatment programmes by describing perceptions of optimal rates of post-malnutrition weight gain/growth, assessing how short- and long-term outcomes are currently understood and prioritised, and understanding perceptions of the role of malnutrition treatment services in preventing longer-term NCDs. The research used a mixed method approach, comprised of a global cross-sectional online survey (December 2023-March 2024) and key informant interviews (March-July 2024). Participants were professionals with experience in severe malnutrition and/or child health, identified through convenience and snowballing sampling.