.prep_fu {eq5dsuite}

Data checking/preparation: follow-up variable

Description

This function prepares the follow-up (FU) variable for analysis by giving it a default name ('fu') and factorising

Usage

.prep_fu(df, name = NULL, levels = NULL)

Arguments

df

A data frame.

name

Column name in the data frame that contains follow-up information.

levels

Levels to factorise the FU variable into.

Value

A data frame with the follow-up variable renamed as "fu" and factorised.

Examples

df <- data.frame(id = c(1, 1, 2, 2),
  visit = c("baseline", "follow-up", "baseline", "follow-up"))
.prep_fu(df = df, name = "visit", levels = c("baseline", "follow-up"))