Prevalence of Sarcopenia and Associated Factors in Community-dwelling Elderly Populations in Chengdu China

ObjectiveTo determine the prevalence of sarcopenia in community-dwelling elderly populations in Chengdu and its associated risk factors. MethodsA total of 947 community dwelling residents aged ≥60 yr. in Chengdu participated in this study. Their appendicular skeletal muscle mass was measured through bioelectrical impedance analyses. Sarcopenia was defined using the diagnostic algorithm recommended by the Asia Working Group (AWGS) for Sarcopenia. Data in relation to the demographic characteristics,chronic diseases and life style of the participants were obtained through a questionnaire survey,which included the 15-item geriatric depression scale (GDS-15) and the mini nutritional assessment (MNA). ResultsOverall,10.5% of the elderly participants were identified with sarcopenia: 8.4% in men and 12.5% in women. The prevalence of sarcopenia increased with age: 2.3% in the 60-64 yr.,5.6% in the 65-74 yr.,19.7% in the ≥75 yr.. Age 〔odds ratio (OR)=1.109,95% confldence interval (CI):1.054-1.168〕,smoking (OR=3.482,95%CI:1.356-8.938) and Malnorishment (OR=5.598,95%CI:2.677-11.709) are significant predictors of sarcopenia after adjustment for potential confounders. ConclusionApproximately 10% community-dwelling elderly in Chengdu have sarcopenis. Age,smoking,malnutrition are risk factors of sarcopenia.