Prevalence and related assessment practices of adult hospital malnutrition in Africa : A scoping review

Background and aims: Globally, hospital malnutrition prevalence is estimated at 20-50%, with little known about the situation in African hospitals. The aim of this scoping review was to appraise the current evidence base regarding the prevalence of adult hospital malnutrition and related assessment practices in an African context. Methods: A comprehensive and exhaustive search strategy was undertaken to search seven electronic bibliographic databases (including Africa-specific databases) from inception until August 2022 for articles/resources reporting on the prevalence of adult hospital malnutrition in an African setting. Two reviewers independently reviewed abstracts and full-text articles and data extraction was undertaken in duplicate. Results: We screened the titles and abstracts of 7537 records and included 28 studies. Most of the included studies were conducted in the East African region (n = 12), with ten studies from South Africa. Most studies were single-centre studies (n = 22; 79%), including 23 to 2126 participants across all studies. A variety of study populations were investigated with most described as medical and surgical populations (n = 14; 50%). Malnutrition risk prevalence was reported to be between 23% and 74%, using a variety of nutritional screening tools (including MNA-SF/LF, NRS-20 02, MUST, NRI, GNRI). Malnutrition prevalence was reported to be between 8% and 85%, using a variety of tools and parameters, including ASPEN and ESPEN guidelines, SGA, MNA-SF/LF, anthropometric and biochemical indices, with one study using the GLIM criteria to diagnose malnutrition. Conclusions: Both malnutrition risk and malnutrition prevalence are alarmingly high in African adult hospitalised patients. The prevalence of malnutrition differs significantly among studies, owing in part to the variety of tools used and variability in cut-offs for measurements, underscoring the importance of adopting a standardised approach. Realities in the African context include