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目的 :对阜阳市 44年肾综合征出血热 (HFRS)的季节性特征及不同年代季节性特征的变化情况进行分析。方法 :运用集中度、圆形分布法及卡方检验进行统计分析。结果 :季节性分布有高度显著性 (P <0 .0 1) ,高峰时点为 12月 15日 ,标准差为 5 9天 ;在 44年的四个不同年代中 ,季节性特征发生了一些明显的变化 ,峰值降低 (P <0 .0 1) ,病人分布的离散程度增加 ,流行间歇期 (5月 7月 )的发病构成从 0 .75 %上升到 16 .92 % (P <0 .0 1)。结论 :HFRS在阜阳市存在着明显的季节性 ,这种特征近 2 0年发生了明显的变化。
Objective: To analyze the seasonal characteristics of 44-year-old hemorrhagic fever with renal syndrome (HFRS) in Fuyang City and the seasonal changes in different years. Methods: The use of concentration, circular distribution and chi-square test for statistical analysis. Results: The seasonal distribution was highly significant (P <0.01) with the peak time of December 15 and the standard deviation of 59 days. In four different seasons of 44 years, some seasonal features occurred (P <0.01), the patient’s distribution increased, and the incidence of epidemic intermission (May July) increased from 0.75% to 16.92% (P <0. 0 1). Conclusion: There are obvious seasonal changes in HFRS in Fuyang City. This kind of characteristic has obvious changes in recent 20 years.