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Stratification for pre-existing nerve function impairment
|
Relative risk (95% CI)
|
||||
|---|---|---|---|---|
| Month | All data (n=636) | Pre-existing nerve function impairment (n=153) | No pre-existing nerve function impairment (n=483) | P value for test of interaction |
| 4 (end of treatment) | 3.9 (2.1 to 7.3) | 2.0 (0.8 to 4.5) | 6.7 (2.6 to 16.7) | 0.05 |
| 12 (end of follow up) | 1.3 (0.9 to 1.8) | 1.1 (0.6 to 1.8) | 1.5 (1.0 to 2.1) | 0.34 |
