Variable | Group age (n = 31) | Group plate (n = 36) | P value |
---|---|---|---|
Gender(male/female) | 14/17 | 20/16 | 0.762 |
Age (mean ± SD) | 54.6 ± 8.49 | 55.7 ± 8.64 | 0.539 |
Course of disease | 10.7 ± 3.6 | 11.8 ± 3.9 | 0.226 |
Surgical level | |||
C3–6 | 19 | 20 |  |
C4–7 | 12 | 16 |  |
Follow-up duration | 20.3 ± 5.6 | 22.6 ± 3.7 | 0.17 |