mitml (version 0.3-4)

write.mitmlMplus: Write mitml objects to Mplus format

Description

Saves objects of class mitml as a series of text files which can be processed by the statistical software Mplus (Muthen & Muthen, 2012).

Usage

write.mitmlMplus(x, filename, suffix="list", sep="\t", dec=".", na.value=-999)

Arguments

x

An object of class mitml or mitml.list as produced by panImpute, jomoImpute, mitmlComplete, or similar).

filename

Basic file name for the text files containing the imputed data sets, to be specified without file extension.

suffix

File name suffix for the index file.

sep

The field separator.

dec

The decimal separator.

na.value

A numeric value coding the missing data in the resulting data files.

Value

None (invisible NULL).

Details

The Mplus format for multiply imputed data sets comprises a series of text files, each containing one imputed data set, and an index file containing the names of all data files. During export, factors and character variables are converted to numeric. Therefore, write.mitmlMplus produces a log file which contains information about the data set and the factors that have been converted.

In addition, a basic Mplus input file is generated that can be used for setting up subsequent analysis models.

References

Muthen, L. K., & Muthen, B. O. (2012). Mplus User's Guide. Seventh Edition. Los Angeles, CA: Muthen & Muthen.

See Also

panImpute, jomoImpute, mitmlComplete

Examples

data(studentratings)

fml <- ReadDis + SES ~ ReadAchiev + (1|ID)
imp <- panImpute(studentratings, formula=fml, n.burn=1000, n.iter=100, m=5)

# write imputation files, index file, and log file
write.mitmlMplus(imp, filename="imputation", suffix="list", na.value=-999)