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Treatment Arms

Source: vignettes/ep_spec_treatment_arms.Rmd
ep_spec_treatment_arms.Rmd

Overview

The treatment arm specifications are used to split the analysis data in separate treatment arm that are assessed and compared in the endpoint.

In the endpoint specification the following two parameters must be set:

  • treatment_var: Name of the variable in the analysis data set that contains the treatment arms.
  • treatment_refval: The value of treatment_var that corresponds to the reference/intervention. This may be used for asymmetric statistics that compare the treatment effects.

Examples

Ex 2.1

Here is an example of a partial endpoint specification with treatment arm specifications:

# Example of endpoint specification of treatment arms.
ep_spec_ex2_1  <- chef::mk_endpoint_str(
  treatment_var = "TRT01A",
  treatment_refval = "Xanomeline High Dose",
  ...)