Prevalence of overweight, obesity, abdominal obesity and obesity-related risk factors in southern China

ObjectivesThe purpose of this study is to assess the prevalence of overweight/obesity, abdominal obesity and obesity-related risk factors in southern China.MethodsA cross-sectional survey of 15,364 participants aged 15 years and older was conducted from November 2013 to August 2014 in Jiangxi Province, China, using questionnaire forms and physical measurements. The physical measurements included body height, weight, waist circumference (WC), body fat percentage (BFP) and visceral adipose index (VAI). Multivariate logistic regression analysis was performed to evaluate the risk factors for overweight/obesity and abdominal obesity.ResultsThe prevalence of overweight was 25.8% (25.9% in males and 25.7% in females), while that of obesity was 7.9% (8.4% in males and 7.6% in females). The prevalence of abdominal obesity was 10.2% (8.6% in males and 11.3% in females). The prevalence of overweight/obesity was 37.1% in urban residents and 30.2% in rural residents, and this difference was significant (P P ConclusionThis study revealed that obesity and abdominal obesity, which differed by gender and age, are epidemic in southern China. Moreover, there was a very high, significant, positive correlation between WC, BMI and VAI. However, further studies are needed to explore which indicator of body fat could be used as the best marker to indirectly reflect cardiometabolic risk.研究目的：本研究旨在评估中国南方地区超重/肥胖、腹型肥胖及肥胖相关危险因素的流行情况。 研究方法：本研究于2013年11月至2014年8月在中国江西省开展横断面调查，共纳入15364名15岁及以上的受试者，采用问卷调查与体格测量相结合的方式采集数据。体格测量指标包括身高、体质量、腰围（waist circumference, WC）、体脂百分比（body fat percentage, BFP）及内脏脂肪指数（visceral adipose index, VAI）。采用多因素Logistic回归分析评估超重/肥胖及腹型肥胖的危险因素。 研究结果：本次调查显示，总人群超重率为25.8%（男性25.9%、女性25.7%），肥胖率为7.9%（男性8.4%、女性7.6%）；腹型肥胖率为10.2%（男性8.6%、女性11.3%）。城镇居民超重/肥胖患病率为37.1%，农村居民为30.2%，组间差异具有统计学意义（P<0.05，原文此处存在笔误）。此外，不同性别及年龄亚组的超重/肥胖、腹型肥胖流行特征存在显著差异。同时，腰围、体质量指数（body mass index, BMI）与内脏脂肪指数之间呈极强的显著正相关。 研究结论：本研究证实，中国南方地区已出现肥胖与腹型肥胖的流行态势，且其流行特征存在性别与年龄差异。此外，腰围、体质量指数与内脏脂肪指数三者间存在显著的强正相关关系。但仍需开展进一步研究，以明确何种体脂指标可作为间接反映心脏代谢风险的最佳标志物。