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Table 5 Known-groups validity for FACIT-Fatigue in patients with PsA

From: RETRACTED ARTICLE: Content validity and psychometric evaluation of Functional Assessment of Chronic Illness Therapy-Fatigue in patients with psoriatic arthritis

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
  1. Pooled data: OPAL Broaden and OPAL Beyond
  2. CI confidence interval, FACIT-Fatigue Functional Assessment of Chronic Illness Therapy–Fatigue, PsA psoriatic arthritis