Table 1

Logistic regression analysis for variables associated with ectopic mineralisation at the level of motion segments

VariablesNew involvement (n=733)Progressive bridge score (n=919)
OR95% CIP valueOR95% CIP value
Age* (in years)1.000.99 to 1.010.1580.980.97 to 1.000.028
Sex
Female individuals11
Male individuals0.760.51 to 1.140.1851.040.67 to 1.620.870
Diagnosis*
Without11
Early-phase DISH1.860.98 to 3.520.0572.411.42 to 4.090.001
Moderate DISH1.270.59 to 2.720.5363.561.87 to 6.78<0.001
Severe DISH4.941.65 to 14.840.0044.681.85 to 11.800.001
Diagnosis
Unchanged11
Changed3.922.25 to 6.82<0.0015.413.23 to 9.05<0.001
Scan interval (in years)1.081.01 to 1.150.0251.131.04 to 1.220.004
  • *Collected from the time of the first CT scan of the thoracic spine.

  • DISH, diffuse idiopathic skeletal hyperostosis.