5.8.6 SAS Procedures for Multiple Imputation
As mentioned before, PROC MI is used to generate the imputations. It creates M imputed data sets, physically stored in a single data set with indicator _IMPUTATION_ to separate the various imputed copies from each other. We will describe some options available in the PROC MI statement. The option SIMPLE displays simple descriptive statistics and pairwise correlations based on available cases in the input data set. The number of imputations is specified by NIMPUTE and is by default equal to 5. The option ROUND controls the number of decimal places in the imputed values (by default there is no rounding). If more than one number is specified, one should use a VAR statement, and the specified numbers ...
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