Table 3.

Multivariable analysis of factors associated with spinal structural lesions defined by mSASSS ≥1.

Variables	Odds ratio (95% CI)	P-value
Age	1.053 [1.007–1.101]	0.0227
hsCRP	0.992 [0.968–1.016]	0.5071
MRI Spine	4.522 [2.223–9.198]	<0.0001
ASDAS-ESR	1.654 [1.135–2.412]	0.0089
DKK1	1.010 [0.986–1.033]	0.4188
IL-31*	0.587 [0.917–0.979]	0.0014

^*Odds ratio (95% CI) for each serum 10-pg/mL increase in IL-31 level.