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Table 1 General characteristics of the study population

From: Epidemic investigation of benign prostatic obstruction with coexisting overactive bladder in Shanghai Pudong New Area and its impact on the health-related quality of life

Variable BPO without OAB (n = 892) BPO with coexisting OAB (n = 584) P value
Prostate volume (mL) 55.6 ± 20.7 62.7 ± 26.5 0.005
Serum PSA (ng/mL) 3.6 ± 0.8 3.7 ± 0.7 0.624
Testosterone (nmol/L) 14.2 ± 4.6 13.9 ± 4.3 0.196
Qmax (mL/s) 10.2 ± 3.9 10.1 ± 3.8 0.162
PVR (mL) 19.8 ± 17.3 20.5 ± 18.7 0.820
BMI (kg/m2) 24.3 ± 3.7 24.6 ± 4.1 0.461
IPSS (score) 19.2 ± 6.8 23.5 ± 7.3 0.000
QoL (score) 3.9 ± 0.9 4.6 ± 1.2 0.000
IIEF-5 (score) 9.9 ± 2.3 9.0 ± 1.7 0.036
  1. BPO Benign prostatic obstruction, OAB Overactive bladder syndrome, PSA Prostate-specific antigen, Qmax Maximum flow rate, PVR Postvoid residual urine volume, IPSS International prostate symptom score, QoL Quality of life, IIEF-5 International index of erectile function-5, OABSS Overactive bladder symptom score