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The aim of the study was to evaluate the association between various factors and diabetes type II (DM) with a particular emphasis on indicators of central obesity, and to compare the effect of DM on disability among elder populations (≥ 50 years old) in nine countries. Data were available for 52,946 people aged ≥ 18 years who participated in the WHO Study on global AGEing and adult health and the Collaborative Research on Ageing in Europe studies conducted between 2007 and 2012. DM was defined as self-report of physician diagnosis. Height, weight, and waist circumference were measured. Disability status was assessed with the WHODAS II questionnaire. The overall prevalence of DM was 7.9% and ranged from 3.8% (Ghana) to 17.6% (Mexico). A 10 cm increase in waist circumference and waist-to-height ratio of > 0.5 were associated with a significant 1.26 (India) to 1.77 (Finland), and 1.68 (China …