Table 3 Variation in individual post-void residual (PVR) volume readings over the course of the study, stratified by therapy cohort, alpha-blocker use, baseline PVR volume group, and radiation cohort.
Parameter | Group | Number of patients | Mean of N weeks of PVR readings | p-value | Mean Std. Dev. of N PVR readings | p-value |
|---|---|---|---|---|---|---|
|  |  |  | Mean ± SD |  | Mean ± SD |  |
Alpha-blocker use | No | 29 | 26.5 ± 29.3 | 0.027 | 22.3 ± 18.8 | 0.011 |
|  | Yes | 96 | 54.7 ± 65.6 |  | 35.7 ± 36.9 |  |
Baseline PVR volume | ≤ 40 cc | 76 | 23.2 ± 31.7 | < 0.001 | 23.4 ± 32.7 | <0.001 |
|  | > 40 cc | 49 | 86.9 ± 72.7 |  | 46.7 ± 31.4 |  |
Radiation cohort | Prostate only | 66 | 46.3 ± 55.4 | 0.725 | 29.7 ± 21.6 | 0.317 |
|  | Pelvis | 59 | 50.2 ± 65.6 |  | 35.8 ± 43.9 |  |
Overall population |  | 125 | 48.2 ± 60.2 |  | 32.5 ± 34.0 |  |