血吸虫卵计量变异的随机模型  

Stochastic Model for Variation of Faecal Schistosoma Egg Count

作　　者：余金明[1,2] 袁鸿昌[1,2] 

机构地区：[1]上海铁道大学 [2]上海医科大学

出　　处：《中国卫生统计》1999年第1期2-5,共4页Chinese Journal of Health Statistics

基　　金：铁道部科技专项基金

摘　　要：目的将随机模型引进到血吸虫卵计量变异的研究中。方法随机模型将人群中虫卵计量变异分为两个来源（１）由于个体间配对成虫负荷的不同而导致的虫卵计量在个体间的变异和（２）对于某一具有特定成虫负荷的个体内虫卵计量的变异。结果在综合考虑成虫、虫卵的分布特征、配对因素、宿主年龄等因素的基础上建立了数学方程，并介绍了模型的基本拟合方法和该模型的实际应用。结论随机模型可以描述血吸虫卵计量变异的特征。Objective Adapting stochastic model for researching schistosoma egg counts variation.Methods The stochastic model distinguishes egg count variations in a population between two sources (1)differences between individuals counts due to the underlying difference on worm pairs,(2)variation of egg counts for an individual with given worm load.Results Taking into account the distributions of worms and eggs,worm pairs and age of host,mathematical formulation was developed .The method of fitting the model and application of the model were described in this paper.Conclusion Stochastic model can discribe the characteristic of schistosoma egg count variations.

关 键 词：随机模型 虫卵计量变异 血吸虫 

分 类 号：R532.210.4[医药卫生—内科学]