Table 2

Details of patients with the “flail arm” variant of motor neuron disease

African group n=6 White group
N=6
Male:female5:15:1
Mean age of onset (SD)50.5 (10.3) y51.6 (9.4) y
El Escorial criteria (n)Probable 2Probable 1
Possible1possible 2
Suspected3suspected 3