The children of hight delay are more than the children of weight delay,the level of delay is the same for bone age and height.

• 轻度智商落后组儿童的骨龄发育落后以尺骨骺未按时出现为常见 ,体格发育障碍为身高落后者明显多于体重落后者 ,骨龄与身高发育落后程度一致。