Simplify SQL Statement

["ibm" <ibm@xxxxxxxxxx>]

In this query I am creating a computed "HOLD FLAG" column.  Can I use
this computed column in evaluating the "ON-HOLD COMMENTS" column, or do
I have to run the sub-select query like I am doing now?

Thanks
Chris

select 
	
	(CASE
		WHEN
			(SELECT COUNT(*) FROM AMFLIB.MBCKREP 
				WHERE 
				AMFLIB.MBCKREP.CKCVNB =
AMFLIB.MBCDREP.CDCVNB AND 
				AMFLIB.MBCKREP.CKBCDT > 0 AND
AMFLIB.MBCKREP.CKBDDT = 0 ) > 0 THEN 
					1 
		ELSE 			0 	END) AS "HOLD FLAG", 
	(CASE
		WHEN
			(SELECT COUNT(*) FROM AMFLIB.MBCKREP 
				WHERE 
				AMFLIB.MBCKREP.CKCVNB =
AMFLIB.MBCDREP.CDCVNB AND 
				AMFLIB.MBCKREP.CKBCDT > 0 AND
AMFLIB.MBCKREP.CKBDDT = 0 ) > 0 THEN 
					'UNCONTROLLED DELAY'
		WHEN	
			(SELECT COUNT(*) FROM AMFLIB.MBCKREP 
				WHERE 
				AMFLIB.MBCKREP.CKCVNB =
AMFLIB.MBCDREP.CDCVNB AND 
				AMFLIB.MBCKREP.CKBCDT > 0 AND
AMFLIB.MBCKREP.CKBDDT = 0 ) = 0 AND
				AMFLIB.MBC6REP.C6UUCA = ' ' THEN
					'_________________' 
		WHEN
			(SELECT COUNT(*) FROM AMFLIB.MBCKREP 
				WHERE 
				AMFLIB.MBCKREP.CKCVNB =
AMFLIB.MBCDREP.CDCVNB AND 
				AMFLIB.MBCKREP.CKBCDT > 0 AND
AMFLIB.MBCKREP.CKBDDT = 0 ) = 0 AND
				AMFLIB.MBC6REP.C6UUCA = 'X' THEN
					'*UNCONTROLLED DELAY' 
								
		ELSE 			'_________________' 	END) AS
"ON-HOLD COMMENTS",
	
from
	...