Table 1 Association between different patient and tumor parameters according to surgical procedure
Variable | RN | ePN | iPN | p-value | Test |
|---|---|---|---|---|---|
Age ± SD, mean [years]1 | 61.6 ± 11.1 | 59.7 ± 11.6 | 62.8 ± 11.2 | < 0.001 | ANOVA |
Sex | < 0.001 | chi-square | |||
Female | 1186 (40.1%) | 360 (32.5%) | 105 (39.9%) | ||
Male | 1769 (59.9%) | 748 (67.5%) | 158 (60.1%) | ||
Tumor diameter ± SD, mean [cm] | 5.6 ± 2.7 | 3.4 ± 1.8 | 4.2 ± 2.2 | < 0.001 | ANOVA |
Stage | < 0.001 | chi-square | |||
pT1a | 941 (31.8%) | 859 (77.5%) | 135 (51.3%) | ||
pT1b | 1033 (35.0%) | 199 (18.0%) | 92 (35.0%) | ||
pT2 | 489 (16.5%) | 26 (2.3%) | 15 (5.7%) | ||
pT3a | 492 (16.6%) | 24 (2.2%) | 21 (8.0%) | ||
Grade | < 0.001 | chi-square | |||
G1/2 | 2468 (87.6%) | 1024 (93.6%) | 233 (93.6%) | ||
G3/4 | 350 (12.4%) | 70 (6.4%) | 16 (6.4%) | ||
Histological subtype | < 0.001 | chi-square | |||
ccRCC | 2492 (85.8%) | 846 (76.6%) | 207 (79.6%) | ||
Non-ccRCC | 411 (14.2%) | 258 (23.4%) | 53 (20.4%) |