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Table 3 Confirmatory factor analysis

From: Content validity and psychometric evaluation of the Functional Assessment of Chronic Illness Therapy-Fatigue scale in patients with chronic lymphocytic leukemia

FACIT-Fatigue RMSEA (90% CI) SRMR CFI ω ωH ECV
Single factor modeling
 Symptom subscale 0.068 (0.005–0.123) 0.014 0.998 0.903   
 Impact subscale 0.166 (0.143–0.190) 0.061 0.961 0.907   
 Total scale 0.152 (0.139–0.165) 0.066 0.946 0.943   
Bifactor modeling 0.120 (0.105–0.135) 0.044 0.973 0.954 0.905 0.819
  1. Abbreviations: CI confidence interval, CFI comparative fit index, ECV explained common variance, FACIT-Fatigue Functional Assessment of Chronic Illness Therapy-Fatigue scale, RMSEA root mean square error of approximation, SRMR standardized root mean square residual, ω omega, ωH omega hierarchical
  2. Standard cutoff values: RMSEA < 0.06; SRMR < 0.08; CFI > 0.95 [17,18,19,20]
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