Behavioral model-guided nutritional counseling could improve the dietary practice and nutritional status of elders in Ethiopia: a quasi-experimental study

Abstract

Abstract Background Physiological, pathological, and socioeconomic changes occurring in older people negatively influence food intake, utilization, nutritional status, and health. These problems are deeply rooted in low socio-economic settings and could partly be addressed through systematic behavioral change approaches. Hence, this study was to evaluate the effect of behavioral model-guided nutritional counseling on the dietary intake and nutritional status of elders. Methods A one-armed pre- and post-test quasi-experimental design was conducted on 293 community-dwelling older adults aged above 60 years from January to May 2022. A health education tool was developed and validated using health beliefs and the theory of behavioral change. The sessions were delivered by trained nurses through home-to-home visits every week lasting 45–60 min for up to two months. Data on nutritional knowledge, dietary intake, and body weight were captured using standardized questionnaires and measurements. The primary outcome was captured using the validated mini-nutritional assessment (MNA) tool and classified accordingly. The data was analyzed using Stata software, where it is presented in tables, graphs, and summary statistics. A paired t-test and the p-value were used to identify statistically significant effects of the intervention. Results A total of 263 elders were involved in the experiment, and modeled nutritional counseling significantly improved the knowledge score from 7.58 (± 1.05) to 11.6 (± 1.37) (P < 0.001) at the pre- and post-intervention periods. A significant improvement has been shown in the consumption of dairy products, fruits, and animal-source foods and, importantly, in the mean dietary diversity score (p < 0.001). As a result, the burden of malnutrition was significantly lower in the post-intervention period (9.6%: 7.9–11.3) compared to baseline (12.5%: 11.4–13.8). There is a significant increase in the mini-nutrition assessment score (MD = 0.30; p = 0.007). The mean body weight and the body mass index did not change significantly after the intervention (p > 0.05). Conclusion Targeted behavioral model-guided nutritional counseling could help promote perception, diversify dietary consumption, and reduce the risk of undernutrition among elders. Particular attention to older people with the use of participant-centered nutritional behavioral change interventions coupled with livelihood support could help reduce undernutrition among older people. Trial registration Clinical Trial Registration-URL: www.clinicaltrials.gov, identifier number: NCT04746664, first released 10/02/2021.