A comparison of national estimates of obesity prevalence from the behavioral risk factor surveillance system and the national health and nutrition examination survey
A comparison of national estimates of obesity prevalence from the behavioral risk factor surveillance system and the national health and nutrition examination survey
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DOI：
10.1038/sj.ijo.0803125
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发表时间：
2006-01-01
影响因子：
4.9
通讯作者：
Brownson, RC
中科院分区：
文献类型：
--
作者：
Yun, S;Zhu, BP;Brownson, RC
背景资料：肥胖干预措施在美国的州或次州一级实施，其中只有成年人自我报告的体重和身高数据可从行为风险因素监测系统（BRFSS）获得。根据BRFSS自我报告的体重和身高得出的超重和肥胖患病率估计值低估了真实患病率。然而，这种低估是否在不同的人口群体中是一致的还没有得到充分的研究。在本研究中，我们比较了肥胖的患病率（体重指数（BMI）>= 30 kg/m2）和超重1999年美国国家健康与营养调查（NHANES）和BRFSS中不同人口统计学群体的BMI（BMI >= 25 kg/m2）-2000.我们还比较了排名顺序的肥胖和超重患病率在不同的人口群体从两个datasource.Results：相比，NHANES，BRFSS低估了肥胖和超重的整体患病率分别为9.5和5.7个百分点。不同人口群体的低估程度不同：妇女对肥胖和超重流行率的低估程度（分别为13.1和12.2个百分点）高于男子（分别为5.8和-0.6个百分点）。低估的变化在男性中更高。从BRFSS数据中观察到非西班牙裔非洲裔美国妇女的教育程度和肥胖患病率之间存在明显的负相关。然而，NHANES没有发现这种关联。虽然BRFSS可以正确地识别人口最高的肥胖和超重负担，它没有准确地排名肥胖和超重患病率在不同的人口groups.Conclusion：相比NHANES，BRFSS不成比例地低估了肥胖和超重的患病率在不同性别，种族，年龄和教育亚组。
Background: Obesity interventions are implemented at state or sub-state level in the United States ( US), where only self-reported weight and height data for adults are available from the Behavioral Risk Factor Surveillance System (BRFSS). The prevalence estimates of overweight and obesity generated from self-reported weight and height from BRFSS are known to underestimate the true prevalence. However, whether this underestimation is consistent across different demographic groups has not been fully investigated.Methods: In this study, we compared the prevalence estimates of obesity (body mass index (BMI) >= 30 kg/m(2)) and overweight ( BMI >= 25kg/m(2)) in different demographic groups in the US from the National Health and Nutrition Examination Survey ( NHANES) and BRFSS during 1999-2000. We also compared the rank orders of the obesity and overweight prevalence across different demographic groups from the two data sources.Results: Compared to NHANES, BRFSS underestimated the overall prevalence of obesity and overweight by 9.5 and 5.7 percentage points, respectively. The underestimation differed across different demographic groups: the underestimation of obesity and overweight prevalence was higher among women (13.1 and 12.2 percentage points, respectively) than among men (5.8 and -0.6 percentage points, respectively). The variation of underestimation was higher among men. A clear inverse association between educational attainment and obesity prevalence among non-Hispanic African American women was observed from BRFSS data. However, no such association was found from NHANES. While BRFSS can identify correctly the population with the highest obesity and overweight burden, it did not accurately rank the obesity and overweight prevalence across different demographic groups.Conclusion: Compared to NHANES, BRFSS disproportionately underestimates the prevalence of obesity and overweight across different gender, race, age, and education subgroups.