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| Bands rule | Adjusted rule | Total | ||
| Low risk | Medium risk | High risk | ||
| Low risk | 531 (18) | 115 (8) | 0 | 646 (26) 4.0% |
| Medium risk | 18 (1) | 54 (13) | 97 (49) | 169 (63) 37.3% |
| High risk | 0 | 7 (1) | 42 (25) | 49 (26) 53.1% |
| Total | 549 (19) 3.5% | 176 (22) 12.5% | 139 (74) 53.2% | |
HR = hazard ratio.
data missing for 14 patients.
CI = confidence interval, NFI = nerve function impairment.
