Table 5.

Known-groups validity for FACIT-Fatigue in patients with PsA

Analysis	Differences in the FACIT-Fatigue domain scores between the “remission/low disease activity group” and the “active disease group”
	Experience domain		Impact domain		Total score
	Difference (95% CI)	Effect size	Difference (95% CI)	Effect size	Difference (95% CI)	Effect size
Anchor as a continuous variable	8.52 (8.11, 8.93)	1.88	10.15 (9.59, 10.71)	1.48	18.35 (17.46, 19.24)	1.68
Anchor as a categorical variable	8.22 (7.52, 8.91)	1.81	10.06 (9.12, 10.99)	1.46	17.89 (16.40, 19.38)	1.63

Pooled data: OPAL Broaden and OPAL Beyond

CI confidence interval, FACIT-Fatigue Functional Assessment of Chronic Illness Therapy–Fatigue, PsA psoriatic arthritis