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Research Article: Diabetes care cascade and associated factors in 10 700 middle-aged adults in four sub-Saharan African countries: a cross-sectional study

Date Published: 2023-04-27

Abstract:
Objectives We investigated progression through the care cascade and associated factors for people with diabetes in sub-Saharan Africa to identify attrition stages that may be most appropriate for targeted intervention. Design Cross-sectional study. Setting Community-based study in four sub-Saharan African countries. Participants 10 700 individuals, aged 40–60 years. Primary and secondary outcome measures The primary outcome measure was the diabetes cascade of care defined as the age-adjusted diabetes prevalence (self-report of diabetes, fasting plasma glucose (FPG) ?7?mmol/L or random plasma glucose ?11.1?mmol/L) and proportions of those who reported awareness of having diabetes, ever having received treatment for diabetes and those who achieved glycaemic control (FPG <7.2?mmol/L). Secondary outcome measures were factors associated with having diabetes and being aware of the diagnosis. Results Diabetes prevalence was 5.5% (95% CI 4.4% to 6.5%). Approximately half of those with diabetes were aware (54%; 95%?CI 50% to 58%); 73% (95% CI 67% to 79%) of aware individuals reported ever having received treatment. However, only 38% (95% CI 30% to 46%) of those ever having received treatment were adequately controlled. Increasing age (OR 1.1; 95%?CI 1.0 to 1.1), urban residence (OR 2.3; 95%?CI 1.6 to 3.5), hypertension (OR 1.9; 95%?CI 1.5 to 2.4), family history of diabetes (OR 3.9; 95%?CI 3.0 to 5.1) and measures of central adiposity were associated with higher odds of having diabetes. Increasing age (OR 1.1; 95%?CI 1.0 to 1.1), semi-rural residence (OR 2.5; 95%?CI 1.1 to 5.7), secondary education (OR 2.4; 95%?CI 1.2 to 4.9), hypertension (OR 1.6; 95%?CI 1.0 to 2.4) and known HIV positivity (OR 2.3; 95%?CI 1.2 to 4.4) were associated with greater likelihood of awareness of having diabetes. Conclusions There is attrition at each stage of the diabetes care cascade in sub-Saharan Africa. Public health strategies should target improving diagnosis in high-risk individuals and intensifying therapy in individuals treated for diabetes.

Introduction:
Diabetes prevalence in adults in sub-Saharan Africa (SSA) is projected to increase from 23.6?million in 2021 to 54.9?million people in 2045. 1 Inadequate control of blood sugar and other cardiovascular risk factors will impose an unsustainable burden of diabetes-related complications on already constrained regional healthcare systems. Existing data suggest that outcomes in individuals in SSA with diabetes are currently suboptimal with over 300?000 diabetes-related deaths before the age of 60 years in 2021, 1…

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