Table 3.
Bivariate regression of 16 Gy dose escalation on predictor variables
| Variable | Odds ratio (95% confidence interval) |
|---|---|
| Prostate volume (ultrasound) | |
| Contoured prostate volume | 1.00 (0.94-1.07) |
| Androgen deprivation therapy use | 0.58 (0.17-2.06) |
| Number of needles used | 1.09 (0.80-1.49) |
| Prostate D90 | 2.08 (1.24-3.47)∗ |
| Prostate V100 | 4.27 (1.52-11.94)∗ |
| Prostate V150 | 0.94 (0.77-1.14) |
| Prostate V200 | 0.54 (0.34-0.89)∗ |
| Urethra Dmax | 0.74 (0.60-0.92)∗ |
| Urethra D10 | 0.58 (0.37-0.90)∗ |
| Rectum V80 | 0.98 (0.98-0.99)∗ |
| Rectum Dmax | 0.89 (0.82-0.97)∗ |
∗
P < .05.