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女孩月经初潮是青春期发育的重要标志,在反映女性儿童的性发育速度和水平方面很有意义。我们于1991年11月10日～20日,对我县奇克镇内9岁～19岁1290名女学生进行了月经初潮发生情况和伴随症状的调查。1 对象和方法1.1 对象县政府所在地奇克镇内9岁～19岁在校女学生1290名。1.2 方法男女分开,只要求女生回答是否发生过月经初潮及伴有何种不适,不要求回答何时发生。用目前国内外推荐使用的概率单位回归法进行计算,用最小二乘法求出直线的回归方程,计算Ma_(50)。2 结果调查的女学生月经初潮发生情况见附表:
Menstrual flow of girls is an important indicator of adolescent development, reflecting the sexual development of female children speed and level of significance. From November 10 to November 20, 1991, we investigated the incidence of menarche and the accompanying symptoms of 1,290 female students aged 9 to 19 in Chik town, our county. 1 objects and methods 1.1 target county seat of Chick town 9 years old to 19 years old school female 1290 schoolgirls. 1.2 men and women separate method, only asked the girls to answer whether there had been menarche and what kind of discomfort, does not require an answer when. Using the current recommended unit of measure at home and abroad, the regression method is used to calculate the regression equation using the least-squares method to calculate Ma_ (50). 2 results of the investigation of the occurrence of menarche of women students see Schedule: