Table 1.

Baseline mean and mean change from baseline to week 104 in mSASSS*

	UPA 15 mg QD	PBO to UPA 15 mg QD	Total
Baseline, mean (SD)	7.5 (11.1) n=92	8.8 (12.1) n=94	8.1 (11.6) n=186
Change from baseline to week 104
Mean (95% CI†)	0.6 (0.1 to 1.1) n=69	0.8 (0.2 to 1.4) n=67	0.7 (0.3 to 1.1) n=136
LS mean (95% CI†)	0.6 (0.0 to 1.2) n=69	0.9 (0.3 to 1.5) n=67	0.7 (0.3 to 1.2) n=136

*Data were obtained in a dedicated reading session that included baseline and week 104 images.

†95% CIs were calculated based on the t-distribution.

LS, least squares; mSASSS, modified Stoke Ankylosing Spondylitis Spine Score; PBO, placebo; QD, once daily; UPA, upadacitinib.