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Table 1 Characteristics by subject classification (N = 164). BMI is body mass index, CFS includes subjects with chronic fatigue syndrome, ISF includes those with unexplained chronic fatigue not meeting criteria for CFS, and NF are never fatigued controls

From: Psychometric properties of the CDC Symptom Inventory for assessment of Chronic Fatigue Syndrome

 

N

Women (%)

Age (Mean ± SD)

BMI (Mean ± SD)

Classification

    

   CFS

52

44 (84.6%)

49.9 ± 7.9

28.4 ± 5.1

   ISF

40

29 (72.5%)

49.7 ± 9.3

28.7 ± 4.7

   Remission

24

17 (70.8%)

51.2 ± 9.1

28.8 ± 5.1

   Never Fatigued

48

41 (85.4%)

50.3 ± 8.5

28.9 ± 5.1