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为进一步了解噪声对女工月经的影响,1985年我们对某市棉纺织厂786名纺织女工的近半年的月经情况进行了调查。调查对象及方法一、对象以噪声声强级高的103分贝的布机车间229名女工为调查组,噪声90分贝以下符合国家卫生标准的557名女工为对照组。两组女工的婚姻、年龄、工龄等情况基本相同。二、判定标准(一)月经病是指月经异常、痛经、经前紧张症有一项以上者。(二)月经异常是指经量、经期、周期异常具有一项以上者。(三)痛经是指经期必须使用止痛药或休假者。(四)经前紧张症是指经前具有较重的
In order to further understand the impact of noise on menstrual cramps, we surveyed the menstruation of 786 textile workers in a cotton mill in 1985 for nearly six months. Subjects and Methods 1. Subjects A total of 229 women workers in the cloth shop with a noise level of 103 decibels as the survey team and 557 women workers with noise below 90 dB as the national health standards were selected as the control group. Marital status, age and length of service of the two groups of female workers are basically the same. Second, determine the standard (a) Menstruation refers to abnormal menstruation, dysmenorrhea, premenstrual tension there are more than one. (B) menstrual abnormalities refers to the amount of menstruation, cycle abnormalities with more than one. (C) Dysmenorrhea refers to menstruation must use painkillers or leave. (D) premenstrual tension refers to the pre-heavier