Kaplan-Meier EstimationYong Wang
生存分析中的Kaplan-Meier估计 在生存分析中,所需分析的数据的形式通常是从一个被定义的起点到到特定事件发生时的时间,称为时间-事件(time to event,TTE)。TTE数据的一个主要特点是:要观察到每一个个体的特定事件的发生,通常是困难的或者不可能的。例如,在药物临床试验中,受试者可能在事件发生之前(例如,死亡)就...
Kaplan-Meier估计器与约束的右 цensor数据--递归计算算法 V0.4-2 说明书 Package‘kmc’November22,2022 Type Package Title Kaplan-Meier Estimator with Constraints for Right Censored Data --a Recursive Computational Algorithm Version0.4-2 Date2022-11-21 Maintainer Yifan Yang<***> Description Given c...
Kaplan-Meier 估计量(又称为乘积限估计量)可用来为具有多个失效和延期的非参数数据集计算生存概率。估计量的方程如下: 其中,S(t0) = 1,t0 = 0。 经验故障函数 故障函数描述某个区间的失效率。在第一个删失观测值之前,故障函数为 0。故障函数...
Kaplan EL, Meier P (1958) Nonparametric estimation from incomplete observations. J Am Stat Assoc 53: 457–481. Pocock S, Clayton TC, Altman DG (2002) Survival plots of time-to-event outcomes in clinical trials: good practice and pitfalls. Lancet 359: 1686– 1689....
均值(MTTF,平均故障时间间隔)和中位数是分布中心的度量。IQR 是分布散布的度量。 示例输出 变量: 80 度 删失 删失信息计数 未删失值 37 右删失值 13删失值: 80 度删失 = 0 非参数估计 变量的特征 95.0% 正态置信区间 均值(MTTF)...
Kaplan-Meier estimation of the cumulative incidence of a competing risk In this note we show as the nonparametric maximum likelihood estimator of the crude incidence of a competing risk can be obtained by applying the Kaplan-Meier estimator to the sub-distribution hazard. The proposed approach start...
Kaplan EL, Meier P (1958) Nonparametric estimation from incomplete observations. J Am Stat Assoc 53:457–481 Article MATH MathSciNet Google Scholar Winter BB, Földes A, Rejtö L (1978) Glivenko-Cantelli theorems for the product limit estimate. Probl Control Inform 7:213–225 MATH Google...
But there is no study to show the effect of the censored observation pattern on estimation and comparison of the survival curves. In this study we aimed to show statistical properties and performance of Kaplan Meier estimates and Log-rank test under violation of random censoring assumption. A ...
(1958). Nonparametric estimation from incomplete observations. Journal of the American Statistical Association, 53(282), 457-481. Peto, R., Peto, J., & Asvall, J. (1971). UKACR trial of surgery for early breast cancer: Mortality at 10 years. The Lancet, 317(8218), 126-130. Altman,...