fp: Fractional Polynomial Transformation

In mfp: Multivariable Fractional Polynomials

Fractional Polynomial Transformation

Description

This function defines a fractional polynomial object for a quantitative input variable x.

Usage

fp(x, df = 4, select = NA, alpha = NA, scale=TRUE)

Arguments

x	quantitative input variable.
df	degrees of freedom of the FP model. df=4: FP model with maximum permitted degree m=2 (default), df=2: FP model with maximum permitted degree m=1, df=1: Linear FP model.
select	sets the variable selection level for the input variable.
alpha	sets the FP selection level for the input variable.
scale	use pre-transformation scaling to avoid numerical problems (default=TRUE).

Examples

## Not run: 
	fp(x, df = 4, select = 0.05, scale = FALSE)

## End(Not run)

mfp documentation built on May 29, 2024, 9 a.m.