OUTFILE Subcommand (MULTIPLE IMPUTATION command)
The OUTFILE subcommand allows
you to export IBM® SPSS® Statistics-format data
containing imputed values or IBM SPSS Statistics-format data containing an FCS iteration history. The OUTFILE subcommand is ignored if imputation
is turned off.
IMPUTATIONS Keyword
The IMPUTATIONS keyword specifies
an optional dataset containing imputed data. The output dataset consists
of the original data and one complete dataset per imputation. All
variables in the input dataset are included in the output dataset.
Dictionary properties (names, labels, etc.) of existing variables
are copied to the new dataset. The file also contains a new variable, Imputation_, a numeric variable that indicates
the imputation (0 for original data, 1..n for cases having imputed values).
The procedure automatically
defines the Imputation_ variable
as a split variable (see SPLIT FILE) when the output dataset is created. If SPLIT FILE is in effect when the procedure executes,
the output dataset includes one set of imputations for each combination
of values of split variables.
FCSITERATIONS Keyword
The FCSITERATIONS keyword
specifies an optional dataset that contains iteration history data
for FCS imputation.
The dataset contains means and standard deviations by iteration and imputation for each scale dependent varable for which values are imputed. You can plot the data to help assess model convergence.
- The
FCSITERATIONSkeyword is ignored if the monotone method is used. A warning is shown and the dataset is not generated if all imputed variables are categorical.