前言1978年11月1日在山东省济南市召开的全国地区性妇产科学术会议上,确定安徽省牵头全国各省、市、自治区参加调查研究“中国妇女月经生理常数”。为了做好这一工作,按照中华医学会妇产科学会的指示,在省卫生厅和中华医学会安徽分会的直接领导下,我们发挥集体智慧,制定表格,抽调医务人员,按统计学的要求,以随机抽样(Random Sampling)的方式 Preface In November 1, 1978 in Jinan, Shandong Province, held a national conference of obstetrics and gynecology, determined that Anhui Province to lead the provinces, municipalities and autonomous regions to participate in the survey, “Chinese women’s menstrual physiology constant.” In order to do this well, under the guidance of the Obstetrics and Gynecology Society of the Chinese Medical Association, under the direct leadership of the Provincial Health Department and the Anhui Branch of the Chinese Medical Association, we exert our collective wisdom, draw up forms, deploy medical personnel, and according to the statistical requirements , Random sampling (Random Sampling) approach