Figure 2
From: Psychometric properties of the CDC Symptom Inventory for assessment of Chronic Fatigue Syndrome
Mean differences for the different Symptom Inventory Product Term Scores between subjects whose overall fatiguing illness history status was classified as classified as CFS, ISF, Remission and never fatigued controls. All post-hoc comparisons between never fatigued and CFS or ISF were significant (at least: p < 0.05). All post-hoc comparisons between Remission and CFS or ISF were significant (at least: p < 0.05 – not valid for other symptoms: Ever ISF vs. Remission).