Table 3. Comparison between non- urinary retention (non-UR) and urinary retention (UR) groups.

Clinical Parameters	Non-UR (n = 299)	UR (n = 37)	Univariate p-value	Multivariate p-value+
Age (yr)	68.3±6.6	69.2±5.6	0.443
Body mass index (kg/m2)	24.0±2.9	24.5±2.3	0.391
Symptom duration	27.2±43.1	22.2±37.0	0.502
Comorbidity (n, %)
Diabetes	49 (16.4)	5 (13.5)	0.816
Hypertension	140 (46.8)	12 (32.4)	0.116
Neurologic disease	32 (10.7)	3 (8.1)	0.781
Cardiovascular disease	21 (7.0)	4 (10.8)	0.291
Total prostate volume (ml)	56.0±24.2	53.2±18.8	0.424
Transitional zone volume (ml)	30.2±19.9	26.4±15.3	0.385
PSA (ng/dl)	3.5±4.2	3.2±2.6	0.711
Urodynamic study
First desire (ml)	195.9±77.6	200.1±62.7	0.615
Normal desire (ml)	275.7±103.5	298.1±100.0	0.212
Strong desire (ml)	371.1±113.8	379.2±100.4	0.378
Maximal cystometric capacity (ml)	373.9±126.7	385.6±105.7	0.162
PdetQmax (cmH20)	61.1±27.5	58.5±24.5	0.886
Bladder contractility index	83.3±44.6	76.2±28.6	0.345
Bladder outlet obstruction index	44.5±29.4	41.6±26.5	0.688
Operative parameters
Operation time (min)	75.2±37.1	78.1±40.5	0.501
Enucleation time (min)	56.1±24.3	58.0±31.7	0.277
Enucleation efficiency (gm/mim)	0.4±0.3	0.4±0.2	0.652
Morcellation time (min)	11.0±9.3	14.0±11.4	0.061
Morcellation efficiency (gm/min)	2.1±1.3	1.6±0.8	<0.001	0.043(OR0.701,CI0.498–0.988)
Retrieved weight of prostate (gm)	20.9±17.2	20.3±15.4	0.572
Intraoperative complication (n,%)*	92	19
Bladder injury	22 (7.4)	5 (13.5)	0.336
Capsular perforation	35 (11.7)	6 (16.2)	0.596
Bleeding	68 (22.7)	13 (35.1)	0.153
Postoperative complication (n,%)
Reoperation due to bleeding (n,%)	1 (0.3)	4 (10.8)	0.001	0.005(OR0.039,CI0.004–0.383)
Transfusion (n,%)	3 (1.0)	3 (8.1)	0.020	0.036(OR0.144,CI0.027–0.877)
Catheterization duration (day)	2.0±1.7	2.9±3.2	0.106
Hospital duration (day)	2.9±1.2	3.6±2.6	0.107

PdetQmax, detrusor pressure at maximal flow; +, logistic multivariate analysis; all results are expressed as means ± SDs;

^*, counts overlapped.