Table 1.

Longitudinal multivariable analysis of radiographic progression

Variable	OR	95% CI	P value

TNFi use prior to X-ray interval	0.51	0.28–0.92	0.03
NSAID use at start X-ray interval	0.81	0.40–1.63	0.55
mSASSS at start X-ray interval	1.06	1.04–1.07	<0.001
Male gender	3.01	1.56–5.77	0.001
Disease duration	1.01	0.99–1.04	0.38
Current smoking	0.94	0.55–1.61	0.83
HLA-B27	0.99	0.46–2.12	0.98
Nb of exercise sessions per week	0.93	0.80–1.08	0.35
Peripheral arthritis	1.00	0.56–1.79	1.00