Wood C, Larsen L, Williams R
Aust N Z J Obstet Gynaecol. 1979 May;19(2):107-10. doi: 10.1111/j.1479-828x.1979.tb01366.x.
Menstrual characteristics of 2,343 women attending the Shepherd Foundation Health Testing Centre have been analyzed utilizing a computer system of data analysis. The incidence of menstrual pain was 43% and premenstrual tension 75%. The best estimate of normal cycle length was 21-35 days, 1.5% of women having cycles less than 21 days. The duration of menstrual loss was 1-7 days, 3% of women bleeding for more than 7 days. Utilizing the various responses to questions concerning menstrual and cycle length, menstrual pain and premenstrual tension, 150 patterns were found, the 10 most common patterns accounting for 40% of the population; most of the latter patterns included menstrual pain and premenstrual tension. Authorities disagree upon the definitions of normal menstruation and there are serious implications from the lack of knowledge in this area, both for the individual patient and the cost of health care. The formation of a health committee to determine national standards for defining normal menstruation is advocated.
利用一个数据分析计算机系统，对在谢泼德基金会健康检测中心就诊的2343名女性的月经特征进行了分析。痛经发生率为43%，经前紧张症发生率为75%。正常月经周期长度的最佳估计值为21至35天，1.5%的女性月经周期少于21天。月经失血持续时间为1至7天，3%的女性出血超过7天。利用对有关月经和周期长度、痛经及经前紧张症问题的各种回答，发现了150种模式，其中最常见的10种模式占总人数的40%；后几种模式大多包括痛经和经前紧张症。权威人士对正常月经的定义存在分歧，而且这方面知识的欠缺对个体患者和医疗保健成本都有严重影响。主张成立一个健康委员会来确定界定正常月经的国家标准。
