Association between metabolic syndrome and chronic kidney disease and sex specific difference among community elder population in Beijing / 中华流行病学杂志

<p><b>OBJECTIVE</b>To evaluate the association between metabolic syndrome (MS) and chronic kidney disease (CKD) and its sex specific difference among community elder population in China.</p><p><b>METHODS</b>A population-based cross-sectional study was conducted among the old people aged ≥60 years and selected through a two stage cluster random sampling in a community in Beijing from September 2009 to Jun 2010. The standard international case definitions of MS (2009) and CKD (2012) were used.</p><p><b>RESULTS</b>A total of 2 102 old people aged 60-95 years, including 848 males and 1 254 females, were surveyed. The prevalence of MS and CKD were 59.1% and 12.6% respectively. The prevalence of CKD increased from 2.9% to 18.3% with the increase of the forms of MS. Multivariate logistic regression analysis showed the ORs of MS for decreased renal function, albuminuria and CKD were 2.13 (95% CI: 1.39-2.26), 1.99 (95% CI: 1.41-2.82) and 2.03 (95% CI: 1.52-2.71) respectively, and the risk of CKD increased with the forms of MS. The impact of MS on decreased renal function was stronger in females (OR: 2.19 vs. 1.89), but the impact of MS on albuminuria was stronger in males (OR: 1.22 vs. 2.13).</p><p><b>CONCLUSION</b>There was a strong and sex specific association between MS and CKD among the community elder population in Beijing.</p>

Association between waist circumference and the prevalence/control of hypertension by gender and different body mass index classification in an urban elderly population / 中华流行病学杂志

<p><b>OBJECTIVE</b>The aim of the present study was to evaluate the association between waist circumference and the prevalence/control of hypertension in an urban elderly population.</p><p><b>METHODS</b>From September 2009 to June 2010, a population-based cross-sectional study was conducted in Wanshoulu area of Beijing, China.</p><p><b>RESULTS</b>A total of 2 035 elderly (828 male, 1 207 females) participants aged ≥60 years from a community were included in this study for data analysis. We found that the increased waist circumference could significantly increase the risk of prevalence and poor control of hypertension, with the adjusted odds ratios (95% CI) as 1.04 (1.01-1.08) and 0.96 (0.92-1.00) , respectively. Among those identified pure central obesity females (64.7%) , the prevalence of hypertension was significantly higher than those females with normal body mass index (BMI) or with normal waist circumference (52.2%). The adjusted odds ratio (95%CI) between the above said groups appeared as 1.58 (1.07-2.32). The control rate of hypertension among females (32.9%) with pure central obesity, was lower than that of the females with normal BMI and waist circumference (43.5%) , with an adjusted odds ratio (95%CI) as 0.62 (0.37-1.04, P=0.071).</p><p><b>CONCLUSION</b>There appeared significant association between people with pure central obesity and the increased risk of prevalence or with poor control of hypertension. More attention should be paid to both the prevalence and control of hypertension programs among females with pure central obesity.</p>