Modified bladder outlet obstruction index for powerful efficacy prediction of transurethral resection of prostate with benign prostatic hyperplasia

Table 2 Baseline clinical characteristics and comparison of preoperative characteristics between the two groups classified by the overall surgical efficacy

Variables	Baseline (n = 403)	Effective (n = 297)	Ineffective (n = 106)	p Value
Age (year)	70.94 ± 7.50	71.30 ± 7.44	69.94 ± 7.62	0.105
PSA (umol/L)	4.86 ± 4.98	5.21 ± 5.30	3.88 ± 3.83	0.021
Ultrasonography
TPV (mL)	52.84 ± 27.63	54.19 ± 28.06	49.05 ± 26.12	0.074
TZV (mL)	24.90 ± 19.45	26.09 ± 19.92	21.59 ± 17.73	0.022
TZI	0.43 ± 0.14	0.44 ± 0.15	0.40 ± 0.12	0.025
Urodynamics
P_ves (cmH₂O)	102.72 ± 40.04	110.38 ± 40.58	81.23 ± 29.38	< 0.001
P_detQ_max(cmH₂O)	84.92 ± 35.23	90.57 ± 36.07	69.10 ± 27.22	< 0.001
P_abd (cmH₂O)	17.79 ± 16.40	19.81 ± 17.98	12.13 ± 8.65	< 0.001
Q_max(mL/s)	8.10 ± 3.37	7.84 ± 3.31	8.82 ± 3.43	0.010
BOOI	68.73 ± 35.66	74.89 ± 36.41	51.47 ± 26.90	< 0.001
MBOOI	86.52 ± 40.59	94.71 ± 41.04	63.59 ± 28.96	< 0.001
PVR (mL)	74.36 ± 78.10	79.54 ± 78.75	59.85 ± 74.73	0.006
International prostate symptom score (IPSS)
IPSS-t	22.51 ± 5.22	23.10 ± 5.17	20.84 ± 5.03	< 0.001
IPSS-v	8.72 ± 3.45	8.99 ± 3.46	7.98 ± 3.34	0.014
IPSS-s	10.25 ± 2.71	10.61 ± 2.65	9.24 ± 2.61	< 0.001
IPSS-p	3.51 ± 1.54	3.48 ± 1.54	3.59 ± 1.54	0.520
IPSS QoL	4.73 ± 1.03	4.77 ± 0.99	4.62 ± 1.14	0.357

PSA = prostate-specific antigen, TPV = total prostate volume, TZV = transitional zone volume, TZI = transitional zone index, P_ves = intra-vesical pressure, P_detQ_max = detrusor pressure at maximum urine flow rate, P_abd = abdominal pressure, Q_max = maximum urine flow rate, BOOI = bladder outlet obstruction index, MBOOI = modified BOOI, PVR = post void residual urine volume, IPSS-t = IPSS total score, IPSS-v = IPSS voiding score, IPSS-s = IPSS storage score, IPSS-p = post-micturitional IPSS score, QoL = quality of life

ISSN: 1471-2490