build_formula: Building Model Formula
In tern.mmrm: Tables and Graphs for Mixed Models for Repeated Measures (MMRM)

build_formula

R Documentation

Building Model Formula

Description

This builds the model formula which is used inside fit_mmrm() and provided to mmrm::mmrm() internally. It can be instructive to look at the resulting formula directly sometimes.

Usage

build_formula(
  vars,
  cor_struct = c("unstructured", "toeplitz", "heterogeneous toeplitz", "ante-dependence",
    "heterogeneous ante-dependence", "auto-regressive", "heterogeneous auto-regressive",
    "compound symmetry", "heterogeneous compound symmetry")
)

Arguments

`vars`	(`list`) variables to use in the model.
`cor_struct`	(`string`) specify the covariance structure to use.

Value

Formula to use in mmrm::mmrm().

Examples

vars <- list(
  response = "AVAL", covariates = c("RACE", "SEX"),
  id = "USUBJID", arm = "ARMCD", visit = "AVISIT"
)
build_formula(vars, "auto-regressive")
build_formula(vars)

tern.mmrm documentation built on Sept. 30, 2024, 9:20 a.m.