Table 4.

Effect of bisphosphonates and TNFi, respectively, on spinal radiographic progression in propensity score-adjusted logistic regression analyses

	Progression ≥ 2 mSASSS units		New syndesmophytes
	OR (95% CI)	p value	OR (95% CI)	p value
Exposure to bisphosphonates	2.47 (0.89 to 6.86)	0.083	2.96 (1.02 to 8.62)	0.046
Propensity score, 0–1	0.32 (0.03 to 3.65)	0.36	0.41 (0.03 to 5.59)	0.51
Exposure to TNFi	0.91 (0.40 to 2.08)	0.83	1.05 (0.43 to 2.52)	0.92
Propensity score, 0–1	6.26 (0.78 to 49.89)	0.084	1.18 (0.12 to 11.30)	0.89
TNFi for ≥ 2 years	0.86 (0.35 to 2.09)	0.73	0.81 (0.30 to 2.21)	0.68
Propensity score, 0–1	3.78 (0.41 to 34.593)	0.24	0.69 (0.06 to 8.46)	0.77

Significant p value is shown in bold typeface

mSASSS modified Stoke Ankylosing Spondylitis Spinal Score, TNFi tumor necrosis factor inhibitor