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本文报告云南省巍山县高山地区影响阳性钉螺感染的危险因素调查结果。按病例一对照研究方法,63块有阳性钉螺的梯田为观察对象,126块有钉螺而无阳性钉螺的梯田为对照,收集29个有关因素,用 logistic 多元回归模型,在 IBM PC/XT 微机上运行分析,结果得出6个与梯田钉螺感染血吸虫幼虫有关的重要危险因素,即梯田位置、钉螺密度、户主家中的阳性牛数、户主家中的阳性猪数、户主家中的犬数和梯田距上方灌溉沟渠的距离。分析结果与当地流行病学特征相符。
This article reports the results of a survey of the risk factors affecting positive snail infections in the mountainous areas of Weishan County, Yunnan Province. According to the case-control study, 63 terraces with positive snails were observed, and 126 terraces with snails and no positive snails were collected as controls. 29 relevant factors were collected and analyzed by logistic multiple regression model on IBM PC / XT microcomputer The results showed that there were 6 important risk factors associated with the infection of Schistosoma japonicum larvae on terraced fields, ie, the position of terraces, the density of snails, the number of positive cows in the head of household, the number of positive pigs in the heads of households, the number of dogs in the heads of households and the terraces Irrigation ditch distance. The results of the analysis are consistent with the local epidemiological characteristics.