| Objectives:To get the message of the prevalence rate and the distribution of adolescent dysfunctional uterine bleeding of the school girl in Health School; To analyse the risk factor and protection factor of adolescent dysfunctional uterine bleeding; To investigate the new approach of promoting the health education of the school girl in Health School.Methods:Total 27 classes including grade 1, grade 2 and grade 3 of the school girls of nursing speciality in Taiyuan Health School were investigated in the study. The samples were taken by random gradation cluster sampling. The self-made menstruation questionaire and SCL-90 symptom checklist were used to examine the menstruation. Based on the medical history, clinical manifestation, examination of basal body temperature, the prevalence rate and the distribution of adolescent dysfunctional uterine bleeding were analysed among 1,483.698 schoolg girl, who were finally diagnosed as adolescent dysfunctional uterine bleeding without systemic disease, were taken as the experimental group. The control group comprised 782 school girls without adolescent dysfunctional uterine bleeding and systemic disease. The case control study were used. And the numerical data were analysed by statistics to explore the risk factor and the protection factor of adolescent dysfunctional uterine bleeding.Results:(1) The prevalence rate of adolescent dysfunctional uterine bleeding of the school girl in Health School was 47.13%.(2) The significant deviation of the prevalence rate of adolescent dysfunctional uterine bleeding existed between grade 1, grade 2 and grade 3 of the school girls in Taiyuan Health School (χ2=31.62, P<0.01). The prevalence rate of grade 1 and grade 3 was higher than that of grade 2 (P<0.01). The prevalence rate of grade 3 was higher than that of grade 1, but there are no statistical significance (χ2=3.73, P=0.053). (3) The relationship of the prevalence rate of adolescent dysfunctional uterine bleeding with living habit:The prevalence rate in the school girl with irregular diet was higher than that of the school girl with regular diet (χ1=35.19,P<0.01). The prevalence rate in the school girl with lacking sleep was higher than that of the school girl with adequate sleep and plenty sleep. The difference is statistically significant (χ2=92.81, P<0.01). The prevalence rate in the school girl with violent exercise during menstruation period was higher than without violent exercise (χ2=124.16,P<0.01);. The prevalence rate in the school girl with irritative food during menstruation period was higher than without irritative food (χ2=96.01, P<0.01); The prevalence rate in the school girl exposure to cold water during menstruation period was higher than avoidance of the cold water (χ2=91.62, P<0.01). (4) The relationship of the prevalence rate of adolescent dysfunctional uterine bleeding with the family environment:The prevalence rate of the only child in one's family wasn't different from the other school girl (χ2=3.68, P=0.055), The prevalence rate of the school girl's source of the student in the city was higher than that of the school girl in the countryside (χ2=7.31, P<0.05). The prevalence rate of the school girl with family economy more than￥3,001 in one month was higher than that of the the school girl with family economy between 1,501 and 3,000 or lower than 1500 in one month (χ2=19.48, P<0.01); The prevalence rate of the school girl wasn't related with parents'education (Father:χ2=2.71, P=0.26; Mother:χ2=3.04, P=0.22). (5) The prevalence rate of the school girl with different occupation interest was not different (χ2=2.52, P=0.28) (6) The prevalence rate of the school girl with BMI equal or greater than 24.0 and BMI lower than 18.5 was higher than that of the school girl with BMI between 18.5 and 23.9 (χ2=28.23,P<0.01). (7) The relationship of the prevalence rate of adolescent dysfunctional uterine bleeding with psychological status of the students:in the SCL-90, nine factors'means of the experimental group were higher than that of the control group. The difference is statistically significant (P<0.01).(8) Analysis about the multiple factors affecting the adolescent dysfunctional uterine bleeding:there are altogether 18 independents, including 17 factors by single factor analysis and BMI. Establish non-conditional Logistic analysis model about the factors affcting adolescent dysfunctional uterine bleeding, and adopt inlet method to select independents. Based on the in-standard of a in=0.05 and out standard of a out=0.10, logistic regression analysis is conducted step by step. Results showed that among all these independents many were dangerous factors for adolescent dysfunctional uterine bleeding including violent exercise (OR=14.04), frequent eating of irritative food (OR=2.59), and frequent exposure to cold water during menstruation period (OR=2.40), source of the student in the city (OR=1.27), BMI＜18.5或≥24.0 (OR=1.38), somzatization (OR=1.69), obsession and compulsion (OR=1.88), Interpersonal Sensitivity (OR=1.82), depression (OR=2.53), and bigotry (OR=1.41). While others were helpful factors in adolescent dysfunctional uterine bleeding such as healthy diet(OR=0.70), adequate sleep(OR=0.64), and only-child(OR=0.71).Conclusions:(1) The prevalence rate of adolescent dysfunctional uterine bleeding is high in the school girl in Health School. (2) Among all these independents many factors can increase the incidence of adolescent dysfunctional uterine bleeding risks including violent exercise, frequent eating of irritative food, and frequent exposure to cold water during menstruation period, source of the students in the city, BMI＜18.5或≥24.0, somzatization, obsession and compulsion, Interpersonal Sensitivity, depression, and bigotry. While others can reduce the incidence of adolescent dysfunctional uterine bleeding such as healthy diet, adequate sleep, and only-child. (3) In order to reduce the incidence of adolescent dysfunctional uterine bleeding, education in health should be strengthened towards girls in school.Good environment should be created and bad living habits should be rid of.At the same time,for those who are suffering adolescent dysfunctional uterine bleeding, medical treatments must be accompanied by psychological ones in order to help them recover as soon as possible.
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