Classifications of Body Size for Chinese Females in Three Areas

Abstract

The female body size was collected from 3 regions including Northeast China, the Midwest region and region of the lower reaches of Yangtze River. The data includes 1452 samples and were divided into three age groups. And 36 anthropometric items are selected as the basic variables to conduct the principal component analysis for the determination of the main factors for the body shaping. The variance contribution rates of the first two factors for the three age groups were 72.557%, 68.953% and 65.145% respectively, which reflecting most of the information of the original variables. Among them, the first principal component factor is the trunk circumference factor; the second principal component is the height factor. Four indexes are selected to conduct K-means clustering analysis. The results of cluster analysis showed that when there were 6 body shapes, the classification results were clear and the number of people was relatively balanced.