Hi all, Because of missing data, I performed multiple imputation n times using PROC MI, resulting in n imputed datasets. After, I want to perform propensity score matching (PSM) followed by a survival analysis, to compare the survival of two treatment groups matched on several variables. But when I perform PSM, this is done on all n imputed datasets, resulting in n slightly different totals of matched patients. Because of this, I also get n survival curves and I just want one, pooled curve... I know about PROC MIANALYZE, however, I do not think this solves my problem. Does anyone know a way of pooling your imputed data right after PROC MI, or after PSM (although I think this is not possible)? Many thanks in advance!
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