Factors associated with outcome in patients with Guillain-Barré syndrome
| Outcome | Good | Poor | P value |
|---|---|---|---|
| Requirement for mechanical ventilation | 25/127 (20%) | 10/18 (56%) | < 0.01 |
| Mean CMAP amplitude ⩽ 10% of LLN | 6/107 (6%) | 5/16 (31%) | < 0.01 |
| Age > 40 y | 52/127 (41%) | 12/18 (67%) | < 0.05 |
CMAP = Compound muscle action potentials; LLN = lower limit of normal.