Table 3. Multivariate analysis for preoperative risk factors of postoperative voiding dysfunction.
| Variable | Subjective voiding difficulty | Postoperative retention | Postoperative Qmax <15 & significant PVR | Voiding difficulty with significant PVR | Significant PVR | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| OR (95% CI) | p-value | OR (95% CI) | p-value | OR (95% CI) | p-value | OR (95% CI) | p-value | OR (95% CI) | p-value | |
| Hysterectomy | 0.93 (0.34-2.48) | 0.887 | 8.93 (1.17-68.1) | 0.035 | 2.68 (0.86-8.30) | 0.086 | 0.96 (0.11-8.14) | 0.977 | 1.25 (0.43-3.61) | 0.673 |
| Qmax under 15 mL/s | 0.18 (0.10-1.54) | 0.411 | 0.42 (0.01-14.7) | 0.639 | 0.95 (0.91-0.99) | 0.018 | 1.14 (0.12-10.4) | 0.906 | 2.29 (0.79-6.60) | 0.125 |
| Qmax (mL/s) | 0.98 (0.95-1.01) | 0.261 | 1.01 (0.93-1.10) | 0.784 | 0.94 (0.90-0.98) | 0.002 | 0.99 (0.93-1.05) | 0.788 | 0.98 (0.95-1.01) | 0.280 |
| Underactive detrusor | 2.52 (1.03-6.13) | 0.042 | 0.95 (0.05-15.8) | 0.976 | 0.82 (0.25-2.60) | 0.736 | 0.81 (0.14-4.76) | 0.824 | 0.47 (0.15-1.40) | 0.177 |
| Spinal anesthesia | 1.27 (0.73-2.21) | 0.390 | 1.49 (0.19-11.2) | 0.698 | 0.37 (0.15-0.87) | 0.023 | 1.13 (0.14-8.83) | 0.810 | 0.47 (0.24-0.89) | 0.026 |
| Preoperative obstructive symptoms | 3.71 (1.51-9.10) | 0.004 | 1.84 (0.18-18.0) | 0.595 | 2.05 (0.76-5.55) | 0.155 | 2.29 (0.24-21.1) | 0.464 | 1.62 (0.70-3.75) | 0.253 |
| Previous retention history | 11.6 (0.89-152) | 0.061 | 415 (20.0-8,619) | <0.001 | 18.0 (1.41-231) | 0.026 | 58.6 (5.0-680) | 0.001 | 17.8 (1.52-209) | 0.020 |
Qmax, peak flow rate; PVR, postvoid residual; OR, odds ratio; CI, confidence interval.