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Impact of using national v. international definitions of underweight, overweight and obesity: an example from Kuwait.

机译：使用体重不足，超重和肥胖的国家 v。国际定义的影响：科威特的一个例子。

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Objective: To compare the classification of overweight, obesity and underweight using international v. national approaches in Kuwaiti adolescents. Design: Assessment of underweight, overweight and obesity using a national approach (based on Kuwaiti reference data for BMI-for-age) was compared with assessments obtained using three international approaches: the Cole et al. and International Obesity Task Force (IOTF) definitions of thinness and of overweight and obesity (Cole-IOTF); WHO 2007; and US Centers for Disease Control and Prevention (CDC) 2000 reference data and definitions. The degree of agreement between the different methods was assessed using the weighted kappa statistic ( kappa w). Setting: Two randomly selected public intermediate schools in Kuwait City. Subjects: A total of 499 10-14-year-old Kuwaiti adolescents. Results: Prevalence of overweight and obesity using Kuwaiti reference data (36.7%; 95% CI 32.4, 41.1) was significantly lower than that obtained using international approaches - Cole-IOTF (44.7%; 95% CI 40.3, 49.2), CDC 2000 (44.9%; 95% CI 40.5, 49.4) and WHO 2007 (50.5%; 95% CI 46.0, 55.0) (P<0.01). All three international approaches showed almost perfect agreement: IOTF v. WHO ( kappa w=0.82; 95% CI 0.79, 0.85) and IOTF v. CDC ( kappa w=0.90; 95% CI 0.87, 0.92). However, Kuwaiti reference data showed the lowest agreement with the three international approaches, the poorest being with WHO 2007 ( kappa w=0.54; 95% CI 0.49, 0.59). Conclusions: Caution should be exercised when using recently collected national reference data and definitions while assessing underweight, overweight and obesity for clinical and public health applications.
机译：目的：使用国际 v。国家方法比较科威特青少年的超重，肥胖和体重不足的分类。设计：将使用国家方法（基于科威特年龄BMI的参考数据）评估体重过轻，超重和肥胖与使用三种国际方法进行的评估进行比较：Cole等人和国际肥胖问题特别工作组（IOTF）对瘦，超重和肥胖的定义（Cole-IOTF）;世卫组织，2007年;和美国疾病预防控制中心（CDC）2000参考数据和定义。使用加权kappa统计量（kappa w ）评估了不同方法之间的一致性程度。地点：科威特市随机选择的两所公立中学。受试者：总共499名10-14岁的科威特青少年。结果：使用科威特参考数据得出的超重和肥胖患病率（36.7％; 95％CI 32.4，41.1）明显低于使用国际方法获得的结果-Cole-IOTF（44.7％; 95％CI 40.3，49.2），CDC 2000（ 44.9％; 95％CI 40.5，49.4）和WHO 2007（50.5％; 95％CI 46.0，55.0）（ P <0.01）。三种国际方法都显示出几乎完美的一致性：IOTF v。 WHO（kappa w = 0.82; 95％CI 0.79，0.85）和IOTF v。 CDC（κ w = 0.90; 95％CI 0.87，0.92）。但是，科威特的参考数据显示与三种国际方法的一致性最低，与世卫组织2007年的一致性最差（kappa w = 0.54; 95％CI 0.49，0.59）。结论：在评估临床和公共卫生应用中的体重过轻，超重和肥胖时，应使用最新收集的国家参考数据和定义时应谨慎行事。

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