How to select best cutoff in survival plot
Introduction
The following are the codes for select best off of survival data.
Code exmaple
Example data table
dt:
OS stat Response pat_id Expr
1: 4.632444 1 PD SAM7f0d9cc7f001 2.6627146
2: 1.412731 1 PD SAM4305ab968b90 0.2071656
3: 16.229979 1 PD SAMcf018fee2acd 2.2043672
4: 3.121150 1 PD SAMcc4675f394a1 1.1955449
5: 7.457906 1 PD SAM49f9b2e57aa5 1.0337993
library(survminer)
res.cut <- surv_cutpoint(dt, time = "OS", event = "stat",
variables = c("Expr"))
dt$Group <- factor(ifelse(dt$Expr > res.cut$cutpoint[1,1], "High", "Low"), levels = c("Low", "High"))
References
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Original
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