h_construct_model_frame_inputs: Construction of Model Frame Formula and Data Inputs

In mmrm: Mixed Models for Repeated Measures

Construction of Model Frame Formula and Data Inputs

Description

Input formulas are converted from mmrm-style to a style compatible with default stats::model.frame() and stats::model.matrix() methods.

The full formula is returned so we can construct, for example, the model.frame() including all columns as well as the requested subset. The full set is used to identify rows to include in the reduced model frame.

Usage

h_construct_model_frame_inputs(
  formula,
  data,
  include,
  include_choice = c("subject_var", "visit_var", "group_var", "response_var"),
  full
)

Arguments

formula	(mmrm) mmrm fit object.
data	optional data frame that will be passed to model.frame() or model.matrix()
include	(character) names of variable to include
full	(flag) indicator whether to return full model frame (deprecated).

Value

named list with four elements:

• "formula": the formula including the columns requested in the ⁠include=⁠ argument.

• "data": a data frame including all columns needed in the formula. full formula are identical

mmrm documentation built on Oct. 7, 2024, 1:14 a.m.