Increasing trends in central obesity among Chinese adults with normal body mass index, 1993-2009.
Increasing trends in central obesity among Chinese adults with normal body mass index, 1993-2009.
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DOI：
10.1186/1471-2458-13-327
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发表时间：
2013-04-10
影响因子：
4.5
通讯作者：
Yu X
中科院分区：
文献类型：
--
作者：
Du T;Sun X;Yin P;Huo R;Ni C;Yu X
中心性肥胖被认为比整体肥胖更具致病性，研究表明，腰围（WC）和死亡率之间的关联在体重指数（BMI）正常的人群中最强。本研究的目的是确定1993年至2009年BMI正常的中国成年人中中心性肥胖（男性WC ≥ 90 cm，女性WC ≥ 80 cm）患病率的长期趋势，并检查BMI和WC联合表现对中国成年人肥胖患病率的影响。我们使用了1993年至2009年中国健康与营养调查（CHNS）的数据。其中，我们共纳入了52023名年龄≥ 18岁的参与者。BMI < 25 kg/m2的中国成年人中心性肥胖的年龄标化患病率从1993年的11.9%上升到2009年的21.1%（线性趋势P <0.001）。在两种性别、所有年龄、农村/城市环境和教育组中均观察到上升趋势（线性趋势的所有P均<0.001），男性、18-64岁的参与者和农村居民的增量更大（调查×性别、调查×年龄和调查×农村/城市环境的交互作用项的P分别为0.042、0.003和< 0.001）。当采用更严格的BMI < 23 kg/m2临界点（亚洲临界点）时，向心性肥胖患病率的趋势相似。在BMI正常范围内，中心性肥胖与高血压发病风险较高相关。如果仅测量BMI，则超过65%的肥胖个体将被遗漏。我们观察到，在BMI正常的参与者中，无论性别、年龄、农村/城市环境和教育水平如何，中心性肥胖的患病率都呈上升趋势。在BMI正常范围内，中心性肥胖与高血压发病风险较高相关。如果不测量WC，大约三分之二的肥胖个体将被遗漏。因此，迫切需要强调WC作为监测肥胖患病率的措施的重要性。
Central obesity is thought to be more pathogenic than overall obesity and studies have shown that the association between waist circumference (WC) and mortality was strongest in those with a normal body mass index (BMI). The objective of our study was to determine secular trends in the prevalence of central obesity (WC ≥ 90 cm for men and ≥ 80 cm for women) among Chinese adults with normal BMI from 1993 to 2009 and to examine the impact of performance of combined BMI and WC on the prevalence of obesity in Chinese adults. We used data from the China Health and Nutrition Survey (CHNS) conducted from 1993 to 2009. From which we included a total of 52023 participants aged ≥ 18 years. The age-standardized prevalence of central obesity among Chinese adults with BMI < 25 kg/m2 increased from 11.9% in 1993 to 21.1% in 2009 (P for linear trend <0.001). The upward trends were noted in both genders, all ages, rural/urban settings, and education groups (all P for linear trend <0.001), with greater increments in men, participants aged 18–64 years, and rural residents (P for interaction terms survey × sex, survey × age, and survey × rural/urban settings were 0.042, 0.003, and < 0.001, respectively). Trends in the prevalence of central obesity were similar when a more stringent BMI < 23 kg/m2 cut point (Asian cut point) was applied. Central obesity is associated with a higher risk of incident hypertension within normal BMI category. More than 65% individuals with obesity would be missed if solely BMI was measured. We observed an upward trend in the prevalence of central obesity among participants with normal BMI irrespective of sex, age, rural/urban settings, and education level. Central obesity is associated with a higher risk of incident hypertension within normal BMI category. Approximately two thirds of the individuals with obesity would be missed if WC was not measured. It is, therefore, urgent to emphasize the importance of WC as a measure to monitor the prevalence of obesity.
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