Table 2.
Comparison of participant characteristics of the 2 treatment groups at baseline.
| Characteristic | Surgery group (n = 166) | Conservative group (n = 38) | P |
|---|---|---|---|
| Sex, female, n (%) | 95 (57.2%) | 21 (55.3%) | 0.83 |
| Age (y) | 45.2 (7.9) | 46.8 (5.5) | 0.21 |
| Headache intensity (NPRS) | 6.2 (1.7) | 5.9 (1.6) | 0.28 |
| Disability (NDI) | 20.9(8.2) | 19.1(8.0) | 0.83 |
| Headache frequency | 4 | 4 | 0.18 |
| Headache duration | 3 | 3 | 0.18 |
| CSM | 89 (53.6%) | 21 (55.3%) | |
| CSR | 33 (19.9%) | 6 (15.8%) | |
| Mixed CS | 44 (26.5%) | 11 (28.9%) | |
| Diseased level | n = 272 | n = 67 | |
| C2/3 | 3 (1.1%) | 1 (1.5%) | |
| C3/4 | 20 (7.4%) | 4 (6.0%) | |
| C4/5 | 59 (21.7%) | 16 (23.9%) | |
| C5/6 | 105 (38.6%) | 28 (41.8%) | |
| C6/7 | 80 (29.4%) | 17 (25.3%) | |
| C7/T1 | 5 (1.8%) | 1 (1.5%) |
Data are mean (SD), median, or number (%). NPRS, numeric pain rating scale; NDI, Neck Disability Index; CS, cervical spondylosis; CSM, cervical spondylotic myelopathy; CSR, cervical spondylotic radiculopathy; Mixed CS, Mixed cervical spondylosis. Comparison of means among two groups (significant at P < 0.05).