Details of patients with the “flail arm” variant of motor neuron disease
| African group n=6 |
White group N=6 |
||
| Male:female | 5:1 | 5:1 | |
| Mean age of onset (SD) | 50.5 (10.3) y | 51.6 (9.4) y | |
| El Escorial criteria (n) | Probable 2 | Probable 1 | |
| Possible1 | possible 2 | ||
| Suspected3 | suspected 3 | ||









