Variance of the Kaplan-Meier Estimator and Its Quantiles Under Certain Fixed Censoring Models
特定固定删失模型下Kaplan–Meier估计量及其分位数的方差
For fixed censoring models that contain at most one intermediate censoring point, we obtain exact algebraic expressions for the asymptotic variances of (i) the quantiles of the Kaplan-Meier (KM, 1958) survival estimator and (ii) the KM estimator itself at fixed time points. The relationship between (i) and (ii) is found to be the same as the one derived by Sander (1975) and Reid (1981b) for the random censorship model. Confidence intervals for the quantiles based on (i) are…