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Table 3 Reliability of the FSS

From: Validation of the Fatigue Severity Scale in chronic hepatitis C

FSS scores Treatment-naïve (PILLAR) Treatment-experienced (ASPIRE)
Test-retest reliabilitya   
 ICC 0.74 0.86
 Pearson’s correlation 0.74 0.86
Internal consistency   
 Cronbach’s α 0.95 0.96
  1. FSS Fatigue Severity Scale, ICC intraclass correlation.
  2. aTest-retest reliability was calculated using data from Week 12 and Week 24, using only stable patients defined by a change in hemoglobin of <0.5 g/dL.