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1995年9～12月作者对山东省费县进行了恙虫病危险因素的病例对照研究。经配比分析发现,居住在村庄边缘、居住环境潮湿和有田间草丛坐卧史三因素均为该病的危险因素(P值分别小于0.05、0.01和0.01)。进一步分层分析发现,环境潮湿的村边和村中居住人群,其发病的危险性均具有显著性统计学意义(P值分别小于0.01和0.05),证实了以往根据鼠和恙螨的生态习性推断本病危险因素的正确性。
From September to December 1995, the author conducted a case-control study on the risk factors of scrub typhus in Fei County, Shandong Province. According to the matching analysis, the three factors that are living in the edge of the village, wet habitat and lying in the grassland are the risk factors of the disease (P <0.05, 0.01 and 0.01 respectively). Further stratified analysis found that the wet population of village and village residents, the incidence of the risk was statistically significant (P values were less than 0.01 and 0.05), confirming the past based on the ecological habits of rats and chigger mites Inferred the correctness of the risk factors of this disease.