Statistical comparison of relative susceptibility from 4 groups of lesionsa
| Comparison | Nodular | Shell | <1 year |
|---|---|---|---|
| Shell | −9.8621, (−11.7759, −7.9484), P < .0001 | – | – |
| <1 year | −20.3123, (−23.0288, −17.5959), P < .0001 | −10.4502, (−13.6101, −7.2903), P < .0001 | – |
| 1–3 years | −32.6287, (−35.9416, −29.3159), P < .0001 | −22.7666, (−26.2751, −19.2581), P < .0001 | −12.3164, (−16.3345, −8.2983), P < .0001 |
↵a Data given as relative parameter estimates (β), (95% confidence limits), P value. Parameter estimates, 95% CI, and SE from multivariable generalized estimating equation, controlling for age, Expanded Disability Status Scale score, and disease duration. β estimates were obtained by setting the reference category to different lesion group.