Table 1.
Patient characteristics by NVB preservation status. Values are displayed as median (interquartile range) or frequency (percentage). (Total patients in study, N = 584)
| Characteristics | Bilateral NVB resection |
Some degree of NVB preservation |
p-value* |
|---|---|---|---|
| Number of patients | 69 (12%) | 515 (88%) | |
| NVB preservation Status | |||
| Non-NS | 69 (100%) | ||
| Unilateral NS | 91 (18%) | ||
| Bilateral NS | 424 (82%) | ||
| Functional erections at Baseline | |||
| Potent | 19 (28%) | 270 (52%) | <0.0001 |
| Unknown | 27 (39%) | 166 (32%) | |
| Pre-operative PSA (ng/mL) (N=583) | 10.0 (5.8, 15.8) | 6.7 (4.6, 12.8) | 0.006 |
| Clinical T Stage | |||
| T1 | 10 (14%) | 176 (34%) | 0.001 |
| T2 | 32 (46%) | 211 (41%) | |
| T3 | 27 (39%) | 126 (24%) | |
| Unknown | 0 (0%) | 2 (0.4%) | |
| Gleason Score at Biopsy | |||
| ≤6 | 1 (1.4%) | 19 (3.7%) | 0.6 |
| 7 | 14 (20%) | 91 (18%) | |
| ≥8 | 53 (77%) | 397 (77%) | |
| Unknown | 1 (1.4%) | 8 (1.6%) | |
| Age at Surgery | 64 (59, 71) | 62 (57, 67) | 0.018 |
| Gleason Score at RP | |||
| ≤6 | 0 (0%) | 6 (1.2%) | 0.053 |
| 7 | 27 (39%) | 274 (53%) | |
| ≥8 | 42 (61%) | 233 (45%) | |
| Unknown | 0 (0%) | 2 (0.4%) | |
| Seminal Vesical Invasion | |||
| Present | 35 (51%) | 122 (24%) | <0.0001 |
| Unknown | 1 (1.4%) | 2 (0.4%) | |
| Extracapsular Extension | |||
| Present | 65 (94%) | 375 (73%) | <0.0001 |
| Unknown | 0 (0%) | 2 (0.4%) |
*
p-values determined by Kruskal-Wallis for continuous variables and Fisher’s exact test for categorical variables