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


CONCLUSIONS
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.
School of Public Health, Lanzhou University, Lanzhou 730000, China. xuehl@lzu.edu.cn
Hongli
H
Xue
School of Public Health, Lanzhou University, Lanzhou 730000, China.
Zhilan
Z
Li
School of Public Health, Lanzhou University, Lanzhou 730000, China.
Yanni
Y
Wang
School of Public Health, Lanzhou University, Lanzhou 730000, China.
Yuhui
Y
Dang
D000293:Adolescent; D002648:Child; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D012016:Reference Values; D012494:Sampling Studies; D013334:Students; D055105:Waist Circumference; D065927:Waist-Height Ratio