Table 4.
Multivariate Analysis of Factors Associated With PJK.
| 95% Confidence Interval | ||||
|---|---|---|---|---|
| Odds Ratio | Lower | Higher | P | |
| PLSa | 0.36 | 0.16 | 1.94 | .561 |
| Preoperative PI-LL | 0.87 | 0.79 | 0.97 | .008 |
| Preoperative cervical lordosis | 0.96 | 0.93 | 1.00 | .028 |
| Preoperative T1PA | 1.19 | 1.04 | 1.36 | .013 |
| UIV above T9 | 0.34 | 0.10 | 1.16 | .085 |
| BMI | 1.09 | 0.99 | 1.20 | .081 |
| Change in PI-LL | 0.81 | 0.70 | 0.94 | .005 |
| Change in T10-L2 | 1.04 | 1.00 | 1.09 | .063 |
| Change in thoracic kyphosis | 1.06 | 1.00 | 1.13 | .048 |
| Change in T1PA | 1.32 | 1.07 | 1.64 | .010 |
Abbreviations: PLS, posterior ligamentous structures; PI, pelvic incidence; LL, lumbar lordosis; T1PA, T1 pelvic angle; UIV, upper instrumented vertebrae; BMI, body mass index.
aExcluded from final regression model.