作者等就4200位年齡介於11歲到19歲的初中及高中女學生,所做的問卷調查資料,加以統計分析,所得結果如下: ⒈初經的平均發生年齡為12.86歲,年齡到15歲時已有月經的累積百分率為99.5%。 ⒉初經後六個月內的月經,55.8%為規律性,44.2%為不規則性。 ⒊月經持續日數以3至7天者最多,佔85.5%。 ⒋70.5%的女學生經驗過不等程度的經痛,12歲時有經痛者佔51%,14歲以後為75%;經痛女生中的16.5%需要藥物治療。 ⒌原發性無月經的女學生有0.2%,次發性無月經者1.4%。
A total of 4,200 school girls, ages 11 to 19 years, underwent computerized investigation of their menstrual history including menarche, interval, regularity, duration and dysmenorrhea. The results showed that the mean age of menarche was 12.86 years. Of these girls 99.5% experienced their menarche by the age of 15. Of all menstruating girls (N=3,558), 44.2% were found to have an irregular menstrual cycle within 6 months after menarche, 85.5% with duration between 3 to 7 days. 70.5% of the menstruating girls complained of dysmenorrhea. Among these, 16.5% needed to be treated medically. Primary amenorrhea in this study was found to be 0.2% while secondary amenorrhea was 1.4%.