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

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

Wagner et al. Population Health Metrics 2005 3:8   doi:10.1186/1478-7954-3-8