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一九八一年作者在美国的洛杉矶市一个区调查了18～44岁之间的妇女共1367例,目的是观察吸烟和月经失调的关系。结果在371例(27.1％)吸烟者中,月经失调者93例(25.1％),正常者278例(74.9％)。另外,在不吸烟者996例(72.9％)中,月经失调者185例(18.6％),正常者811例(81.4％)。经统计学处理吸烟者与不吸烟者月经失调发生率的差别有非常显著意义(P<0.01),说明吸烟者月经失调的发生率远高于不吸烟者。
In 1981, a district of Los Angeles City in the United States investigated 1367 women aged 18 to 44 with the aim of observing the relationship between smoking and menstrual disorders. Results Of the 371 (27.1%) smokers, 93 (25.1%) had menstrual disorders and 278 (74.9%) had normal menstruation. Among 996 non-smokers (72.9%), 185 (18.6%) had menstrual disorders and 811 (81.4%) had normal menstruation. There was a significant difference in the incidence of menstrual disorders between smokers and non-smokers (P <0.01), indicating that the incidence of menstrual disorders in smokers was much higher than that in non-smokers.