甘肃省7～18岁儿童青少年腰围、腰高比分布特点

Distribution of waist circumference and waist-to-height ratio for 7-18 children and adolescents in Gansu Province

目的了解甘肃省7～18岁儿童腰围和腰围身高比的百分位数正常值，并对其分布特征和发育趋势进行分析。方法以甘肃省7～18岁汉族城乡6600名学龄儿童青少年为研究对象，测量腰围、身高等数据；使用百分位数法建立腰围、腰围身高比正常值；并和国内相关数据比较。结果获得甘肃省7～18岁汉族中小学生各年龄组男女腰围、腰围身高比的P5、P10、P25、P50、P75、P90和P95百分位数正常值；甘肃省7～18岁男女生腰围P50在7～18岁呈逐年上升的趋势并出现了两次交叉；腰围身高比随年龄、性别变化波动很小；甘肃省中小学生的腰围、腰围身高比P5015岁前基本低于中国和北京同龄同性别人群的水平，但是16岁后高于中国和北京同龄同性别人群的水平。结论建立了甘肃地区汉族7～18岁儿童青少年腰围、腰围身高比百分位数正常值，为进一步研究我国儿童青少年中心性肥胖提供基本数据。

Objective To understand the percentile normal of waist circumference and waist-to-height ratio for 7-18 children and adolescents in Gansu Province and to analyze their distribution and growth trend. Methods A stratified cluster representative sample of 6600 urban and rural children aged 7-18 years in Gansu Province was selected. To measure their waist circumference and height and establish the norm of waist circumference and waist-to-height ratio with percentile method. To compare them with the domestic correlation data. Results Sex-age specific percentiles of P5, P10, P25, P50, P75, P90, P95 of waist circumference and waist-to-height ratio for 7-18 children in Gansu Province were accessed. The P50 of waist circumference was increasing year by year and crossed two times,but that of waist-to-height ratio fluctuated slightly. A comparison of the P50 of the waist circumference and waist-to-height ratio among China, Peking and Gansu. Before 15 the data of Gansu were lower than those of China and Beiing;but were higher than that after 16. Conclusion To have constructed percentile normal of waist circumference and waist-to- height ratio for 7-18 children and adolescents in Gansu Province. The study provided a basic data for further studies of child and adolescent central obesity in China.