Table 6 Univariable analysis after 12 months using Fisher’s exact test (two-sided) and independent t-test
Total (n = 122) | Fusion (n = 82) | Non-fusion (n = 40) | p value |
|---|---|---|---|
Sex | 0.10 | ||
Female (n = 40) | 31 (77.5%) | 9 (22.5%) | |
Male (n = 82) | 51 (62.2%) | 31 (37.8%) | |
Age, median (range) (years) | 65 (57–74) | 66 (57–78) | 0.91 |
ASA | 0.28 | ||
ASA1-2 (n = 34) | 20 (58.8%) | 14 (41.2%) | |
ASA3-4 (n = 88) | 62 (70.5%) | 26 (29.5%) | |
Single-level PSD | 46 | 22 | 0.66 |
Multi-level PSD | 36 | 18 | 0.99 |
Distant (n = 9) | 6 (66.7%) | 3 (33.3%) | |
Adjacent (n = 45) | 30 (66.7%) | 15 (33.3%) | |
Location | 0.46 | ||
Cervical (n = 13) | 10 (12.5%) | 3 (7.5%) | |
Thoracic (n = 20) | 13 (15.6%) | 7 (17.5%) | |
Lumbar (n = 72) | 52 (63.4%) | 20 (50.0%) | |
Other (n = 17) | 7 (8.5%) | 10 (25.0%) | |
CCI, median (range) | 5.5 (3–9) | 7.5 (3–9) | 0.88 |
Material failure | 1 | 1 | 1.0 |