Add Covariate to Model Fit (Generic)

Add Covariate to Model Fit (Generic)

Usage

addCovariate(fit, expr, effect, ref, ...)

# Default S3 method
addCovariate(fit, expr, effect = "power", ref = "median", ...)

# S3 method for class 'rxUi'
addCovariate(fit, expr, effect = "power", ref = "median", ...)

# S3 method for class 'nlmixr2FitCore'
addCovariate(fit, expr, effect = "power", ref = "median", ...)

# S3 method for class 'nlmixr2Linearize'
addCovariate(fit, expr, effect = "power", ...)

Arguments

fit

Model fit object

expr

Expression, or vector or list of expressions. eg. CL ~ WT/70 + AGE/80 + ... .

effect

character or list of characters of "linear", "piece_lin", "exp", "power". see details

ref

Default normalization for continuous covariates. "mean", "median" or NA. Default "median"

...

other parameters passed to each specific signature

effect and normaDefault are only used if covariate is continuous. normaDefault call will be skipped if what covpar expression is normalized by other value

Author

Omar I. Elashkar