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Journal of Patient-Reported Outcomes

Table 8 FACIT-F test–retest reliability, Days 7 and 14, based on no change in PGIC-fatigue

From: Experience and measurement of fatigue in adults with Crohn’s disease: results from qualitative interviews and a longitudinal 2-week daily diary pilot study

FACIT-Fa

N

Day 7

mean (SD)

Day 14

mean (SD)

Difference scoreb

t-value

p valuec

ES

ICC

Total score—overall sample

35

29.31 (13.92)

29.19 (13.97)

− 0.13

− 0.15

0.8780

0.01

0.94

  1. aAmong patients defined as having no change in fatigue as measured by the overall CD symptom PGIC-Fatigue (at Day 14)
  2. bCalculated as the Week 2 mean score minus the Week 1 mean score
  3. cPaired t-tests comparing responses at Day 7 and Day 14
  4. ES, effect size; FACIT-F, Functional Assessment of Chronic Illness Therapy–Fatigue; ICC, intraclass correlation coefficient; PGIC, Patient Global Impression of Change; SD, standard deviation
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