Create 2-Arm ANCOVA Model for Continuous Outcomes

Creates a 2-arm ANCOVA model with sensible defaults for continuous outcomes. This is a convenience wrapper around build_model_ancova().

Usage

build_model_ancova_cont_2arms(...)

Arguments

...

Additional arguments passed to build_model_ancova(). Can override any of the default parameters.

Value

An S7 object of class "rctbp_model_ancova" ready for use with build_design() and power analysis functions.

Details

Default parameters:

• n_arms = 2

• contrasts = "contr.treatment"

• p_alloc = c(0.5, 0.5) (equal allocation)

• intercept = 0

• b_arm_treat = NULL (must be specified)

• b_covariate = NULL (must be specified)

• sigma = 1

See also

build_model_ancova(), build_model_ancova_cont_3arms()

Examples

if (FALSE) { # \dontrun{
# Create 2-arm ANCOVA model (must specify effect sizes)
model_2arm <- build_model_ancova_cont_2arms(
  b_arm_treat = 0.5,
  b_covariate = 0.3
)
} # }