ggsurvplot(): Option to add 'all' patients' Survival Curves Needed

[kassambara]

(User request by e-mail)

• Plot survival curves of patients stratified by grouping variables
• Add on the same plot, the survival curves of 'all' patients.

A simple option to do this is needed.

related issue: #98

[kassambara]

New option added now in ggsurvplot() to add he survival curves of (all) pooled patients onto the main survival plot stratified by grouping variables.

• Load required package and fit survival curves:

# Load required packages
library("survival")
library("survminer")

# Fit survival curves
fit <- surv_fit(Surv(time, status) ~ sex, data = lung)

• Basic survival curves:

# Visualize survival curves
ggsurvplot(fit, data = lung, 
           risk.table = TRUE, pval = TRUE,
           surv.median.line = "hv", palette = "jco")

• Add survival curves of pooled patients:

Use add.all = TRUE option

# Add survival curves of pooled patients (Null model)
# Use add.all = TRUE option
ggsurvplot(fit, data = lung, 
           risk.table = TRUE, pval = TRUE,
           surv.median.line = "hv", palette = "jco", 
           add.all = TRUE)

[lli1026]

when i use "add.all=TRUE", got a error message(Error in model.frame.default(formula = surv.object ~ strata.val, data = list( : variable lengths differ (found for 'strata.val')), it works fine without "add.all", any ideas? Thanks,