IF THEN ELSE SAS statements
IF THEN ELSE SAS control statements produce a result that is either non-zero, 0 or missing. The expression is true if a non-zero or non-missing result is generated. 0 or non-missing results are to be false.    For maximum performance, use the IF-THEN-ELSE conditional statements instead of multiple IF-THEN statements. The control returns to the… (0 comment)