Table 2.

Proportions reaching bladder volume threshold at initial scan and undergoing spontaneous voiding or SIC

			Bladder volume threshold (ml)
			<400	400–800	>800	Total
POUR group a bladder volume	P400	Count	240	58	9	307
		% within max. bladder volume	78.2	18.9	2.9
	P800	Count	338	87	6	434
		% within max. bladder volume	77.9	20.0	1.4
			Spontaneous voiding overall	Spontaneous voiding >threshold		SIC incl. SIC refusals b
POUR group spontaneous voiding or SIC						OR 3.13 (1.84–5.35) c
	P400	Count	43	30/67		44/307
		%	14	44.8		14.3
	P800	Count	41	3/6		22/434
		%	9.4	50		5

OR = odds ratio; POUR = postoperative urinary retention; SIC = sterile intermittent catheterization.

^aBladder volume proportions between groups (p >  0.05).

^bTen patients (nine in the POUR-400 and one in the POUR-800 group) refused SIC despite fulfilling the required criteria.

^cChi-square < 0.001.