a | b | c | P ab | P ac | P bc | ||
---|---|---|---|---|---|---|---|
Percent of patients | 20% (104/520) | 75% (390/520) | 5% (26/520) | < 0.001 | < 0.001 | < 0.001 | |
Males/females (n) | 45/59 | 211/179 | 15/11 | < 0.001 | < 0.001 | < 0.001 | |
Mean age | 51.85 ± 10.30 | 56.67 ± 9.06 | 58.40 ± 8.22 | 0.7467 | 0.3389 | 0.1248 | |
Hospitalization duration (days) | 9.25 ± 2.05 | 8.76 ± 1.99 | 9.00 ± 2.70 | 0.1705 | 0.6479 | 0.1019 | |
Operative duration (min) | 95.25 ± 17.66 | 99.73 ± 13.10 | 91.5 ± 15.47 | 0.5716 | 0.7616 | 0.2944 | |
Surgical haemorrhage (ml) | 82.75 ± 12.43 | 93.40 ± 13.86 | 90.0 ± 20.28 | 0.0857 | 0.3105 | 0.7017 | |
Drainage (ml) | 17.00 ± 6.77 | 17.58 ± 6.17 | 18.00 ± 7.15 | 0.9599 | 0.9515 | 0.9236 | |
Fusion rate | 99% | 98% | 97% | 0.9687 | 0.9268 | 0.9715 | |
Subsidence rate | 2% | 5% | 10% | 0.0015 | < 0.001 | < 0.001 | |
Segmental angle (°) | 6.16 ± 3.67 | 7.06 ± 5.67 | 12.36 ± 6.78 | 0.4914 | < 0.001 | < 0.001 | |
C2–C7 Cobb angle (°) | 1.57 ± 20.55 | 5.66 ± 18.05 | 7.87 ± 13.55 | 0.023 | < 0.001 | < 0.001 |