form_gen function

ComBatFamily Model Formula Generations

Generate appropriate formula for ComBatFamily models

form_gen(x, c = NULL, i = NULL, random = NULL, smooth = NULL)

Arguments

• x: A model function name that is used or to be used in the ComBatFamily Package (eg: "lmer", "lm", "gam").
• c: Data frame or matrix of covariates supplied to model.
• i: Expression of interaction terms supplied to model. (eg: "age:diagnosis").
• random: Variable name of a random effect in linear mixed effect model.
• smooth: Variable name that requires a smooth function.

Returns

A string of formula

Examples

covariates <- adni[, c("AGE", "SEX")]
form_gen(x = "lm", c = covariates)