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Hey guys,

I have a problem reading in my imputed data sets. The multiple imputation was done in R with the package MICE. In order to read in the multiple imputed data I saved all data.frames as separate files named imputeiter100.dta, imputeiter200.dta, ...

Then I generated a file impvals.txt in the same directory. It has the following structure:
imputed_variable_name_1<WHITESPACE>imputed_variable_name_2<WHITESPACE> ... <NEWLINE>
Number_of_cases<NEWLINE>
Number_of_imputed_datasets<NEWLINE>
imputed_dataset_name_1<TAB>imputed_dataset_name_2<TAB> ... <NEWLINE>

When I try to read this file in MLWin(2.27) with the IRETRieve command, MLWin crashes without any error message.

Any Ideas?

Best regards
Linus

The format of your impvals.txt file looks correct, however MLwiN expects the imputed datasets to be in the form of tab-delimited text files rather than Stata .dta files. Could you try again after converting the files to this format and see whether you have more success?

Hey Chris,

thanks for your reply. This solved my problem. In fact I tried to read in dta files rather than fixed format txt files. With txt files it worked perfectly.