Neurological signs and symptoms of cervical myelopathy (CM)*
| Clinical features % (n) | Cases with CM, N=17 | Controls without CM, N=37 | p Value |
| Hand clumsiness | 70 (12) | – | – |
| Gait impairment/falls | 65 (11) | 37 (10) | 0.01 |
| Neck pain | 35 (6) | 38 (14) | 0.99 |
| Paraesthesia/sensory disorders | 29 (5) | – | – |
| Lhermitte's sign | 17 (3) | – | – |
| Bladder/genital disorders | 17 (3) | – | – |
| Lower limb weakness | 65 (11) | 5 (2) | <0.001 |
| Upper limb weakness | 47 (8) | 4 (1) | <0.001 |
| Amyotrophy of the hands | 12 (2) | – | – |
| Hyper-reflexia | 59 (10) | 37 (10) | 0.04 |
| Spasticity | 41 (7) | 4 (1) | <0.001 |
| Loss of reflexes | 12 (2) | – | – |
| Sensory loss | 24 (4) | – | – |
Percentages were compared using the Fisher's exact test.
Results are shown as the percentage (number) of patients with the different clinical signs in the subgroups with (n=17) and without (n=37)CM.
↵* In the cases, symptoms were assessed at the date of onset of CM. In the controls, symptoms were assessed within 1 year before the last visit in 2007.