Concentration and circular distribution method were used to analyze the seasonal distribution features of 13 common infectious diseases during 1990-2006 in Fuzhou City.

方法运用集中度法及圆形分布法对福州市1990—2006年13种常见传染病的季节分布特征进行分析。

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[Methods] Concentration and circular distribution method were used to analyze the seasonal distribution features of 13 common infectious diseases during 1990—2006 in Fuzhou City.

方法运用集中度法及圆形分布法对福州市1990—2006年13种常见传染病的季节分布特征进行分析。

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This study used the statistic method of circular distribution to detect the incidence of psychosis in psychiatric hospital.

本文采用圆分布统计分析方法，对精神科常见病种进行季节性分析。

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