Table 2.
Clinical and pathologic characteristics of retropubic radical prostatectomy and robot assisted laparoscopic prostatectomy.
| Group | Open retropubic radical prostatectomy | Robot assisted laparoscopic prostatectomy | p-value |
|---|---|---|---|
| (N = 1324) | (N = 1775) | ||
| Age (years) | 73.2 ± 6.5 | 70.1 ± 7.6 | <0.01† |
| PSA (ng/dL) | 12.9 ± 19.0 | 10.2 ± 10.3 | <0.01† |
| BMI (kg/m2) | 24.13 ± 2.8 | 24.6 ± 2.7 | <0.01† |
| Prostate Volume (cc) | 42.6 ± 19.0 | 40.9 ± 17.4 | 0.02† |
| DM | 209 (17.0%) | 241 (14.6%) | 0.08 |
| HTN | 688 (52.0%) | 815 (45.9%) | <0.01‡ |
| Gleason grade Group | 0.05‡ | ||
| 1 | 357 (27.0%) | 490 (27.6%) | |
| 2 | 493 (37.2%) | 726 (40.9%) | |
| 3 | 319 (24.1%) | 399 (22.5%) | |
| 4 | 84 (6.3%) | 80 (4.5%) | |
| 5 | 71 (5.4%) | 80 (4.5%) | |
| Pathologic T stage | 0.32‡ | ||
| T2 | 829 (62.6%) | 1142 (64.3%) | |
| T3 or over | 335 (37.4%) | 633 (35.7%) | |
| Pathologic N stage | <0.01‡ | ||
| N0 | 310 (23.4%) | 426 (24.0%) | |
| N1 | 88 (6.6%) | 50 (2.8%) | |
| Nx | 926 (69.9%) | 1299 (73.2%) | |
| Surgical margin | 422 (34.1%) | 599 (31.5%) | 0.12‡ |
| Apex margin | 286 (21.6%) | 287 (16.2%) | <0.01‡ |
| Base margin | 113 (8.5%) | 144 (8.1%) | 0.67 |
| Posterolateral margin | 146 (11.0%) | 223 (12.6%) | 0.19 |
| Anterior margin | 118 (8.9%) | 122 (6.9%) | 0.04 |
| Lymphovascular invasion | 102 (7.7%) | 107 (6.0%) | 0.07‡ |
†One-way ANOVA, ‡Chi-square test.