“log-rank test”的概念、定义、翻译、参考文献-科学参考

log-rank test

Statistics

A test for comparing two (or more) sets of survival times (see hazard rate). The data consist of the completed lifetimes of individuals who have died and the current ages of those still living. The null hypothesis is that the sets come from the same population. Suppose there are m distinct survival times, t₍₁₎<t₍₂₎<⋯< t_(m). For the two-sample case the test statistic is g, given by $log-rank test$ where n_kj is the number of individuals in set k who are alive just before time t_(j), d_kj is the number of these who die at that time, and N_j=n_1j+n_2j.
The distribution of g can be approximated by a normal distribution with, under the null hypothesis, mean 0 and variance V, where $log-rank test$ and D_j=d_1j+d_2j.

单词	log-rank test
释义	log-rank test Statistics A test for comparing two (or more) sets of survival times (see hazard rate). The data consist of the completed lifetimes of individuals who have died and the current ages of those still living. The null hypothesis is that the sets come from the same population. Suppose there are m distinct survival times, t₍₁₎<t₍₂₎<⋯< t_(m). For the two-sample case the test statistic is g, given by $log-rank test$ where n_kj is the number of individuals in set k who are alive just before time t_(j), d_kj is the number of these who die at that time, and N_j=n_1j+n_2j. The distribution of g can be approximated by a normal distribution with, under the null hypothesis, mean 0 and variance V, where $log-rank test$ and D_j=d_1j+d_2j.
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