long2mitml.list: Convert imputations from long format to `mitml.list`

Description

These functions convert data sets containing multiple imputations in long format to objects of class mitml.list for use in further analyses.

Usage

long2mitml.list(x, split, exclude=NULL)
jomo2mitml.list(x)

Arguments

A data frame in long format containing multiple imputations (see details).

split

A character string naming the column in x that denotes different imputatins (see details).

exclude

A vector denoting values of split which should be excluded from the list.

Value

A list of imputed data sets with an additional class attribute mitml.list.

Details

The general function long2mitml.list is intedended for converting data frames from the long format to mitml.list (i.e., a list of imputed data sets). In this format, imputations are enclosed in a single data frame where some split variables is used to denote different imputations.

The function jomo2mitml.list is a special case of long2mitml.list and is intended for converting imputations generated with the native functions of the jomo package.

Examples

Run this code

data(studentratings)
require(jomo)

# impute data using jomo (native functions)
clus <- studentratings[,"ID"]
imp <- jomo(Y=studentratings[,c("ReadAchiev","ReadDis")], clus=clus)

# split imputations
impList <- long2mitml.list(imp, split="Imputation", exclude=0)
impList <- jomo2mitml.list(imp)