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目的应用圆形分布法对徐州市2006～2009年腹泻症候群监测资料进行分析,以便为指导其它医疗机构开展腹泻症候群监测提供科学的依据。方法按月统计腹泻就诊数,用圆形分布法探讨腹泻季节性分布特点。将就诊时间转换为角度,以元旦零时为零度角,确定全年每月月角度,取月中位角并进行三角函数转换,使之线性化。分别计算各月的sinα、cosα与该月就诊人数(f)的乘积。根据平均角α和95%的角正常值范围对就诊的高峰时点和就诊高峰期间作出估计。结果徐州市腹泻症候群就诊具有明显季节性(P<0.01),各年就诊高峰日不全相同(P<0.01)。结论徐州市腹泻症候群就诊存在明显的季节高峰。其就诊高峰日集中在7月份,高峰期多在4～10月份。建议徐州市腹泻病门诊的开诊时间为每年的4～10月。
Objective To analyze the monitoring data of diarrhea syndromes in Xuzhou from 2006 to 2009 by circular distribution method so as to provide a scientific basis for guiding other medical institutions to carry out the monitoring of diarrhea syndromes. Methods The number of diarrhea visits was counted on a monthly basis and the distribution of diarrhea was investigated by circular distribution. The treatment time is converted to point of view, zero-point zero at New Year’s Day, to determine the annual monthly monthly angle, take the median of the month and the trigonometric function conversion, to linearize. Calculate the product of sinα, cosα of each month and the number of visits for the month (f) respectively. Estimates were made of peak visits and peak visits based on the average angle α and the 95% normal range of angles. Results The symptoms of diarrhea syndrome in Xuzhou were obviously seasonal (P <0.01), and were not the same on the peak days of each year (P <0.01). Conclusion Xuzhou diarrhea syndrome clinics there is a clear seasonal peak. The peak of its treatment concentrated in July, the peak period in April to October. Proposed Xuzhou diarrhea clinic outpatient time for the annual 4 to 10 months.