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Hazard ratio for PJK after segmental spinal instrumentation and fusion
| Variable | Hazard ratio (95% CI) | p value |
|---|---|---|
| Female | 2.36 (0.72, 7.81) | 0.159 |
| Osteopenia/osteoporosis | 1.86 (0.98, 3.55) | 0.058 |
| Upper instrumented level (T1-T3) | 1.98 (1.05, 3.72) | 0.034 |
| Anterior-posterior approach | 3.04 (1.56, 5.93) | 0.001 |
| SSVL difference (mm) | 0.99 (0.98, 1.00) | 0.001 |
PJK = proximal junction kyphosis; SSVL = sacral sagittal vertical line.
