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Distribution of RS overall and for different subgroups
| Variable | RS median (range) |
|---|---|
| All patients, N = 222 | 16 (0–68) |
| Tumor grade (BRE) | |
| G1, N = 28 | 14 (6–28) |
| G2, N = 146 | 15 (0–51) |
| G3, N = 48 | 24 (5–68) |
| pN stage | |
| pN0, N = 136 | 17 (0–68) |
| pN1a, N = 86 | 14 (0–51) |
| Peritumoral lympho-vascular invasion | |
| No, N = 172 | 16 (0–68) |
| Yes, N = 50 | 15 (2–44) |
| Invasive tumor size | |
| ≤ 2 cm, N = 133 | 15 (0–43) |
| > 2 cm, N = 89 | 16 (0–68) |
| Ki67 | |
| ≤ 30, N = 193 | 15 (0–51) |
| > 30, N = 29 | 24 (1–68) |
