get_COX_HR: Summarize Hazard Ratio from a survival object using S3 method

In visR-sandbox/visR-survival: A package to wrap functionality for plots, tables and diagrams adhering to graphical principles

Description

S3 method for extracting information regarding Hazard Ratios. No default method is available at the moment.

Usage

get_COX_HR(x, ...)

## S3 method for class 'survfit'
get_COX_HR(survfit_object = survfit_object, update_formula = NULL, ...)

Arguments

x	S3 object
...	other arguments passed on to the method survival::coxph
survfit_object	An object of class survfit
update_formula	Template which specifies how to update the formula of the survfit_object update.formula

Value

A tibble with Hazard Ratios

Author(s)

Steven Haesendonckx

See Also

coxph update.formula

Examples

library(survival)
library(dplyr)
library(tidyr)
library(ggplot2)

## treatment effect
survfit_object_trt <- vr_KM_est(data = adtte, strata = c("TRTP"))
get_COX_HR(survfit_object_trt)

## treatment and gender effect
survfit_object_trt_sex <- vr_KM_est(data = adtte, strata = c("TRTP", "SEX"))
get_COX_HR(survfit_object_trt_sex)

## update formula of KM estimates by treatment to include "SEX" for HR estimation
get_COX_HR(survfit_object_trt, update_formula = ". ~ . + SEX")
 
## update formula of KM estimates by treatment to include "AGE" for HR estimation with ties considered via the efron method
get_COX_HR(survfit_object_trt, update_formula = ". ~ . + strata(AGE)", ties = "efron")

visR-sandbox/visR-survival documentation built on Sept. 18, 2020, 6:21 p.m.