Table 1.
Preoperative patient characteristics by status of postoperative urinary retention
| Urinary retention (n = 446) | No urinary retention (n = 585) | P value | |
|---|---|---|---|
| Age (yr), mean (SD) | 61.3 (10.5) | 62.2 (10.7) | 0.20 |
| Male sex, n (%) | 288 (64.6) | 189 (32.3) | <0.001 |
| Body mass index (kg·m−2), mean (SD) | 28.8 (5.4) | 29.3 (5.3) | 0.14 |
| ASA classification, n (%) | 0.04 | ||
| I | 84 (18.8) | 78 (13.3) | |
| II | 347 (77.8) | 479 (81.9) | |
| III | 15 (3.4) | 28 (4.8) | |
| Smoking status, n (%) | 0.90 | ||
| Non-smoker | 325 (72.9) | 434 (74.2) | |
| Ex-smoker | 85 (19.1) | 99 (16.9) | |
| Current smoker | 36 (8.1) | 52 (8.9) | |
| Preoperative opioid use, n (%) | 45 (10.1) | 70 (12.0) | 0.90 |
| Preoperative beta blocker use, n (%) | 28 (6.3) | 53 (9.1) | 0.10 |
ASA = American Society of Anesthesiologists; SD = standard deviation