淋病是性病中最多发、最常见的一种。笔者应用圆形分布法对吉林地区1999～1996年淋病发病情况进行分析,以探讨淋病发病的季节性特征,为今后防治工作提供科学依据。1 资料与方法1.1 资料来源 取自吉林市卫生防疫站“性传播疾病报表”。1.2 分析方法 应用圆形分布法将月份转化为角度,把全年12个月变换成360度,1年以365天计,则1天相当于0.9863度,以1月1日零时为起点,按月的实际天数求出每月月中值作为组中值,并转化成角度。即1月为15.29°,2月为44.38°,余类推。然后求出每个角度的正、余弦值,并分别与相应月份的发病数相乘,求其积和得∑sinα和∑cosα,代入圆形分布公式求得各年及总的集中度(r)值、平均角(α)值及角的标准差(S)值,进行 Gonorrhea is the most common venereal disease, the most common one. The circular distribution method was used to analyze the incidence of gonorrhea in Jilin Province from 1999 to 1996 to explore the seasonal characteristics of gonorrhea incidence and provide a scientific basis for prevention and control work in the future. 1 Materials and Methods 1.1 Source of information from the Jilin Provincial Health and Epidemic Prevention Station “Sexually Transmitted Diseases Report.” 1.2 Analysis Method The circular distribution method will be transformed into the angle of the month, the annual 12 months into 360 degrees, a year to 365 days, then 1 day is equivalent to 0.9863 degrees, at 0:00 on January 1 as a starting point, The monthly median is calculated as the median of the group by the actual days of the month and is translated into perspective. That is January 15.29 °, February 44.38 °, and so on. Then, the positive and the cosine of each angle are calculated and multiplied respectively with the incidence of the corresponding month, and the sum of Σsinα and Σcosα is obtained and substituted into the circular distribution formula for each year and the total concentration (r ) Value, the average angle (α) value, and the angle standard deviation (S) value