Birgit, not knowing your data, I would recommend R-package "mice" or function aregImpute from R-package Hmisc as good multi-purpose tools. Regards, Ulrike -- View this message in context: http://www.nabble.com/missing-data-imputation---simulation-tp17642736p17643601.html Sent from the R help mailing list archive at Nabble.com.