Global Trends in the Burden of Ischemic Stroke Attributable to Diabetes Versus Atrial Fibrillation

BACKGROUND: Ischemic stroke (IS) related to atrial fibrillation (AF) represents a cardio-cerebral comorbidity, whereas diabetes-related IS reflects an advanced manifestation of panvascular disease. We aimed to analyze the burden trends in AF-related and diabetes-related IS, using Global Burden of Diseases 2021 data. METHODS: To quantify the burdens of AF- and diabetes-related IS, we applied the population-attributable fraction, the proportion of burden preventable by eliminating a risk factor. We calculated population-attributable fractions stratified by time, location, and age group. We analyzed the burdens using joinpoint regression, time-series projection to 2050, and age/sex-stratified. RESULTS: Globally, AF-related IS had a higher age-standardized incidence rate in 1990 but declined steadily (average annual percentage change =-0.81 [95% CI, -0.92 to -0.69]). Conversely, diabetes-related IS, despite a lower initial incidence, exhibited substantial and sustained increases (average annual percentage change=1.10 [95% CI, 1.02-1.18]). Middle-high socio-demographic index regions experienced the greatest burden from both comorbidities. In North America and Eastern Europe, the age-standardized incidence rates of AF-related IS stabilized (average annual percentage change=-1.45 [95% CI, -1.63 to -1.27]; -0.95 [95% CI, -1.06 to -0.84]), whereas the age-standardized incidence rates of diabetes-related IS continued to increase (average annual percentage change=1.18 [95% CI, 1.02-1.34]; 0.72 [95% CI, 0.56-0.88]). High body mass index emerged as a critical shared risk factor for AF, diabetes, and IS. Projections indicate a substantial increase in diabetes-related IS incidence over the next 3 decades, contrasting with minimal growth in AF-related IS. CONCLUSIONS: IS remains a critical global health challenge, primarily driven by the rising burden of diabetes-related IS. Our findings highlight the importance of age- and country-specific interventions.