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身高体重指数因其测量计算简便、误差小而在儿童少年肥胖评价中逐渐受到重视，但Ｗ／Ｈ２和Ｗ／Ｈ３在儿童少年肥胖评价中的适用性仍有争议，为了探讨两指数在儿童少年肥胖评价中的适用性，在西安市７～１８岁儿童少年中进行了本研究，结果发现在７～１３岁间Ｗ／Ｈ３指数比Ｗ／Ｈ２指数好，而在１４岁以后Ｗ／Ｈ２比Ｗ／Ｈ３更合适。
Because of its simple calculation and small error, height and body mass index has been paid more attention in the evaluation of childhood and adolescent obesity. However, the applicability of W / H2 and W / H3 in childhood and adolescent obesity evaluation remains controversial. In order to explore the relationship between the two indices in children and adolescents Obesity evaluation of the applicability of this study in Xi’an aged 7 to 18 children and adolescents found that between the ages of 7 to 13 W / H3 index better than the W / H2 index, and after the age of 14 W / H2 ratio W / H3 is more suitable.