Variables | Intra-pedicular accuracy | Cranial facet joint violation | ||||||
---|---|---|---|---|---|---|---|---|
B | Odds ratio | 95% Confidence intervals | P | B | Odds ratio | 95% Confidence intervals | P | |
Age | − 0.012 | 0.988 | (0.964, 1.012) | 0.315 | − 0.026 | 0.974 | (0.955, 0.994) | 0.009 |
Male gender | 0.245 | 1.277 | (0.617, 2.643) | 0.510 | – | – | – | – |
BMI | − 0.055 | 0.946 | (0.871, 1.027) | 0.185 | – | – | – | – |
Pedicle screw placement techniques | ||||||||
 RA |  | 1.000 |  | 0.079 |  | – |  |  |
 FP | 1.117 | 3.056 | (1.129, 8.269) | 0.028 | – | – | – | – |
 FH | 0.738 | 2.091 | (0.873, 5.008) | 0.098 | – | – | – | – |
 Pedicle angle | − 0.070 | 0.932 | (0.856, 1.014) | 0.103 | − 0.082 | 0.921 | (0.859, 0.988) | 0.022 |
Instrumental levels | ||||||||
 0T10 |  | 1.000 |  | 0.378 |  | – |  |  |
 5T11 | − 0.332 | 0.718 | (0.146, 3.538) | 0.684 | – | – | – | – |
 6T12 | − 0.820 | 0.440 | (0.091, 2.129) | 0.308 | – | – | – | – |
 1L1 | − 0.161 | 0.851 | (0.178, 4.078) | 0.840 | – | – | – | – |
 2L2 | − 0.341 | 0.711 | (0.136, 3.714) | 0.686 | – | – | – | – |
 3L3 | − 1.854 | 0.157 | (0.013, 1.934) | 0.148 | – | – | – | – |
 4L4 | 0.609 | 1.839 | (0.231, 14.653) | 0.565 | – | – | – | – |
Facet joint osteoarthritis | ||||||||
 Normal |  | 1.000 |  | 0.768 |  | 1.000 |  |  |
 Mild | − 0.435 | 0.647 | (0.275, 1.523) | 0.319 | 0.791 | 2.205 | (0.898, 5.417) | 0.085 |
 Moderate | − 0.172 | 0.842 | (0.302, 2.348) | 0.743 | 1.720 | 5.584 | (2.100, 14.850) | 0.001 |
 Severe | − 0.343 | 0.710 | (0.143, 3.533) | 0.675 | 2.481 | 11.956 | (3.083, 46.363) |  < 0.001 |
Distance from skin to insertion point | − 0.242 | 0.785 | (0.477, 1.291) | 0.340 | 0.113 | 1.119 | (0.768, 1.631) | 0.558 |