安装补充包
- conda activate ggsurvplot
- conda install -c bioconda bioconductor-survcomp -y
计算C指数
library(survcomp)
C_index1 <- concordance.index(x=test_data$GS, surv.time=test_data$time, surv.event=test_data$status, method="noether")
C_index2 <- concordance.index(x=test_data$T, surv.time=test_data$time, surv.event=test_data$status, method="noether")
C_index3 <- concordance.index(x=test_data$Risk_Score_Ridge, surv.time=test_data$time, surv.event=test_data$status, method="noether")
比较C指数
cindex.comp(C_index1, C_index3)
cindex.comp(C_index2, C_index3)
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