Learn R Programming

outstandR (version 1.0.0)

get_covariate_names: Get covariate names

Description

Get covariate names

Usage

get_covariate_names(formula)

Value

Covariate names character vector

Arguments

formula

Linear regression formula object. Prognostic factors (PF) are main effects and effect modifiers (EM) are interactions with the treatment variable, e.g., y ~ X1 + trt + trt:X2. For covariates as both PF and EM use * syntax.