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我们于 1998年 3～ 5月份对西安市 6所学校 16 2 6名女学生进行月经调查 ,用寿命表进行分析。1 对象与方法对 3所中学和 3所小学 7～ 18岁共 16 2 6名女学生采用询问回顾性调查。调查项目包括调查时的年龄、调查时月经是否来潮和每个人的初潮年龄。资料分析按寿命表方法进行。
From March to May 1998, we conducted a menstrual survey of 16,26 female students in 6 schools in Xi’an and analyzed them with life tables. 1 Subjects and Methods A retrospective survey was conducted on 16 2 female students in 3 secondary schools and 3 primary schools aged 7 to 18 years. The items surveyed included the age of the survey, whether the menstruation was in the survey and the menarche age of each person. Data analysis by life table method.