摘要 对构成双向有序列联表时间序列数据的广东1984～1993年10年乙型脑炎(乙脑)逐月发病资料，应用游程检验和有序对数比检验两种不同统计方法进行季节性分布分析，获一致的统计结论，乙脑发病呈明显的一年一峰(6月或7月)季节性周期，这对流行病学工作者掌握两种统计方法的基本原理和方法有一定帮助。

    

Application of the Time-Series Method to Analyse the Seasonal Distribution of Epidemic Encephalitis B Incidence in Guangdong Province in the Years of 1984-1993 Li Tingjie, Chen Xiushen, Li Yanfen.Guangdong College of Pharmacy, Guangzhou 510224

    Abstract This paper analysed the data of epidemic encephalitis B incidence that was constituted to time- series and the two-ordered contingency table in Guangdong province from 1984 to 1993.Two different kinds of statistical methods of run- test and ordered-log-ratio test were applied to study the characteristics of seasonal distribution.Consistent conclusion was obtained to show that there appeared an obvious seasonal cyclic characteristic of a peak every year (June or July) for the incidence of epidemic encephalitis B.It is helpful for the epidemiologists to understand the principle and method of these statistical tests.

     ......