根田鼠的生存分析

Survival Analysis of Microtus oeconomus pallas

本文是根据《动物学报》1985年第31卷第2期上刊载的梁杰荣和孙儒泳两位同志的试验结果,用生存分析的观点,引入了年龄别死亡率的概念,改进了根田鼠的寿命表。用Mante1——Haenszel方法检验了雄、雌两个性别根田鼠的生存曲线没有显著差异。用年龄别死亡率,模拟了根田鼠的死亡强度函数。且计算了根田鼠的生存函数。井从生存函数和试验数据两方面估计了根田鼠的期望寿命为9.72个月(41周)。

Life—span table of Microtus oeconomus Pallas was revised according to the experiment results of Liang and Sun by using survival analysis method and introducing the concept of age—specific death rate. The survival curve of male and female M. oeconomus Pallas was detected by Mantel—Haenszel method, and no significant difference was found. Mortality intensity function of M. oeconomus Dallas is imitated by agespecific death rate. Survival function was calculated, and expectation of life of M. oeconomus Pallas was estimated about 9.72 months (41 weeks) derived from the survival function and the experiment data.