Subjects were stratified by age as 40 years old or younger and older than 40 years to study the effect of age on fat pad depth, flaccid length, stretched length and erectile length increase Table 2.

• 以40岁为分水岭，将小于或等于40岁的分为一组，大于40岁的也分为一组，比较年龄对脂肪的厚度、阴茎的疲软长度、牵伸长度、勃起增加长度的影响。