Demographics | Superior group | Inferior group | P value |
---|---|---|---|
Age (year) | 53.6 ± 5.7 | 56.5 ± 7.8 | 0.861 |
Sex | 0.922 | ||
Men | 11 | 8 | |
Women | 9 | 7 | |
Primary fused level | 0.124 | ||
C4–5(7) | 7 | 6 | |
C5–6(18) | 15 | 12 | |
C6–7(10) | 9 | 1 | |
Duration of symptoms (months) | 15.3 ± 3.8 | 16.9 ± 6.1 | 0.532 |
Follow-up (months) | 25.6 ± 5.2 | 27.7 ± 3.8 | 0.317 |