add_reference_levels: Add reference levels
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Description Usage Arguments Details Examples

View source: R/add_reference_levels.R

add_reference_levels Adds reference levels to regression model object

1	add_reference_levels(model_object)

model_object

A cox.ph object

Prints summary statistics of cox.ph model using the broom-package, and adds a reference level to the categorical predictors, as is commonly used in epidemiological publications.

# Model for which I want reference levels printed in the output.
lung <- survival::lung
lung$species <- iris$Species[ sample.int( 150, 228, replace = TRUE )]
input_to_function <- survival::coxph( survival::Surv( time, status == 2 ) ~ age +
sex  + ph.karno + wt.loss + species, data =  lung)
add_reference_levels( model_object = input_to_function)