Effect of nutrition education intervention to improve dietary diversity practice and nutritional status of the older people: A cluster randomized controlled trial

Abstract

The growing aging population raises nutrition and health concerns, with malnutrition in the elderly linked to negative health outcomes. Our objective was to implement theory-based nutritional education interventions to improve the nutritional status of the elderly through diversified dietary practices. A cluster randomized controlled trial was conducted from December 1, 2021, to May 30, 2021, among 782 older persons randomly selected from two urban and 12 semi-urban areas in southwest Ethiopia. We used Social cognitive theory (SCT) in guiding the nutritional education intervention. Data were collected using an interviewer-administered questionnaire. The Mini Nutritional Assessment (MNA) tool was used to assess nutritional status, and a qualitative 24-h eating recall was used to evaluate dietary diversity. Difference-in-difference and generalized estimating equation models were used to assess the intervention effect. In total, 720 participants (361 in the intervention group and 359 in the control group) were included for analysis. The mean dietary diversity score differed significantly between the intervention group and the control group (p