Table 1.
Clinical characteristics of participants in the training set.
| Clinical characteristics | DCM (n = 26) |
Non-DCM (n = 34) |
Statistical method | P value |
|---|---|---|---|---|
| Sex (female/male) | 12/14 | 22/12 | X 2 | .151 |
| Age (yr) | 35.120 ± 14.230 | 50.410 ± 12.606 | t | .000 |
| Left (LCAP + LC)/VBSCA | 0.201 ± 0.367 | 0.148 ± 0.030 | t | .000 |
| Right (LCAP + LC)/VBSCA | 0.210 ± 0.448 | 0.155 ± 0.317 | t | .000 |
| Left SAMP/VBSCA | 0.554 (0.491–0.709) | 0.503 (0.422–0.599) | U | .054 |
| Right SAMP/VBSCA | 0.565 (0.501–0.692) | 0.498 (0.433–0.620) | U | .088 |
| Left SCM/VBSCA | 1.174 ± 0.203 | 0.824 ± 0.163 | t | .000 |
| Right SCM/VBSCA | 1.163 ± 0.243 | 0.827 ± 0.162 | t | .000 |
| Left SPCAP/VBSCA | 0.533 ± 0.157 | 0.422 ± 0.155 | t | .008 |
| Right SPCAP/VBSCA | 0.487 (0.436–0.555) | 0.402 (0.318–0.478) | U | .001 |
| Left MU/VBSCA | 0.388 ± 0.103 | 0.243 ± 0.064 | t | .000 |
| Right MU/VBSCA | 0.401 ± 0.094 | 0.254 ± 0.067 | t | .000 |
| Left (SSCAP + SSC)/VBSCA | 0.746 ± 0.172 | 0.599 ± 0.178 | t | .002 |
| Right (SSCAP + SSC)/VBSCA | 0.745 (0.663–0.861) | 0.592 (0.519–0.654) | U | .000 |
| Flexor/VBSCA | 4.019 ± 0.642 | 2.937 ± 0.483 | t | .000 |
| Extensor/VBSCA | 3.326 (2.900–3.579) | 2.465 (2.163–2.725) | U | .000 |
| Site (neck/limbs/neck + limbs/others) | 13/2/10/1 | 17/4/13/0 | X 2 | .670 |
| Symptom (pain/pain + numbness/others) | 14/9/3 | 18/12/4 | X 2 | .998 |
| Duration | 10.500 (6.000–12.000) | 9.000 (3.000–39.000) | U | .608 |
| Hoffman syndrome (no/yes) | 21/5 | 27/7 | X 2 | .896 |
| Feelings of walking on cotton wool (no/yes) | 24/2 | 27/7 | X 2 | .166 |
| Accompanying symptoms (no/dizziness/others) | 18/6/2 | 26/6/2 | X 2 | .821 |
| Muscle strength (3/4/5) | 1/7/18 | 0/3/31 | X 2 | .079 |
DCM = degenerative cervical myelopathy, LC = longus colli muscle, LCAP = longus capitis muscle, MU = multifidus muscle, SAMP = anterior scalene + middle scalene + posterior scalene, SCM = sternocleidomastoid muscle, SPCAP = splenius capitis muscle, SSC = semispinalis cervicis muscle, SSCAP = semispinalis capitis muscle, VBSCA = cross-sectional area of vertebral body.