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PH Diagnosis Plot of Schoenfeld residuals for a Cox model fit

Source: R/plot_km.R
ph_diagplot_schoenfeld.Rd

PH Diagnosis Plot of Schoenfeld residuals for a Cox model fit

Usage 

ph_diagplot_schoenfeld(
  coxobj,
  time_scale = "months",
  log_time = TRUE,
  endpoint_name = "",
  subtitle = ""
)

Arguments

coxobj

object returned from coxph

time_scale

a character string, 'years', 'months', 'weeks' or 'days', time unit of median survival time

log_time

logical, TRUE (default) or FALSE

endpoint_name

a character string, name of the endpoint

subtitle

a character string, subtitle of the plot

Value

a plot of Schoenfeld residuals

Examples 

library(survival)
data(adtte_sat)
data(pseudo_ipd_sat)
combined_data <- rbind(adtte_sat[, c("TIME", "EVENT", "ARM")], pseudo_ipd_sat)
unweighted_cox <- coxph(Surv(TIME, EVENT == 1) ~ ARM, data = combined_data)
ph_diagplot_schoenfeld(unweighted_cox,
  time_scale = "month", log_time = TRUE,
  endpoint_name = "OS", subtitle = "(Before Matching)"
)