Variables | New involvement (n=733) | Progressive bridge score (n=919) | ||||
OR | 95% CI | P value | OR | 95% CI | P value | |
Age* (in years) | 1.00 | 0.99 to 1.01 | 0.158 | 0.98 | 0.97 to 1.00 | 0.028 |
Sex | ||||||
Female individuals | 1 | 1 | ||||
Male individuals | 0.76 | 0.51 to 1.14 | 0.185 | 1.04 | 0.67 to 1.62 | 0.870 |
Diagnosis* | ||||||
Without | 1 | 1 | ||||
Early-phase DISH | 1.86 | 0.98 to 3.52 | 0.057 | 2.41 | 1.42 to 4.09 | 0.001 |
Moderate DISH | 1.27 | 0.59 to 2.72 | 0.536 | 3.56 | 1.87 to 6.78 | <0.001 |
Severe DISH | 4.94 | 1.65 to 14.84 | 0.004 | 4.68 | 1.85 to 11.80 | 0.001 |
Diagnosis | ||||||
Unchanged | 1 | 1 | ||||
Changed | 3.92 | 2.25 to 6.82 | <0.001 | 5.41 | 3.23 to 9.05 | <0.001 |
Scan interval (in years) | 1.08 | 1.01 to 1.15 | 0.025 | 1.13 | 1.04 to 1.22 | 0.004 |
*Collected from the time of the first CT scan of the thoracic spine.
DISH, diffuse idiopathic skeletal hyperostosis.