By statistical analysis sexual dimorphism is revealed in both suprapelvic height and pelvic height . The increase in pelvic height is greater in girls than boys and occurs before the appearance of secondary sexual charateristics .

通过统计学分析，揭示 儿童 盆 上高度和骨盆高度性的二形性，女童盆高的增加大于男童，且发生在第二性征出现之前。

Suprapelvic height pelvic height and subischeal height are obtained by calculation on the basis of standing height sitting height total lower limb length ankle height and bi-iliac width .

先测每个儿童的立高、坐高、下肢长度、踝高和双髂宽度，然后计算出 盆上高度、盆高和坐骨下高度。