logic: DS.DSDECOD = Adverse Event AND There is no Adverse Event reported on Adverse Event Form where AE.AEDIS = YES subject    aedis   dsdecod 1001          Yes      Adverse event 1001          blank    Adverse event 1001        no           Adverse event Like above example, a subject has 3 loglines and in one of the logline it is present as aedis=yes , so this subject should not come in output. code for this ?? ... View more