摘要
应用圆形分布法对百色地区１９６０～１９９７年伤寒发病资料进行分析。结果显示，百色地区伤寒发病具有明显的季节性，３８年中有２２年发病高峰日在８月份，有３２年的９５％流行期始于５月份，终止于１１月份。与６０年代相比，７０年代以后发病高峰日略推迟，且流行期缩短。随着发病率增高，季节性增强，发病更趋集中。年发病率与圆形分布γ值呈正相关，与角的标准差呈负相关，与平均角α无相关。
The incidence data of Typhoid from 1960 to 1997 in Baise region were analysed by using Circular Distribution method. Results indicated that the seasonal fluctuation of the Typhoid incidence was significant. 22 of 38 years, the highest peak of the Typhoid incidence occurred in August; and 32 of 38 years, 95 percent of the epidemic periods began in May and terminated in November. Compared with 1960's, the highest peak of the Typhoid incidence since 1970's delayed a little and the epidemic periods shortened as well. The higher incidence and the more strengthened season it was, the more concentrated of the illness season occurred. The annual incidence rate had positive correlation with γ value of circular distribution, had negative correlation with angular deviation and had no correlation with mean anglle .
出处
《右江民族医学院学报》
1999年第1期6-7,共2页
Journal of Youjiang Medical University for Nationalities
关键词
伤寒
流行病学
圆形分布
Typhoid
epidemiology
circular distribution
