Table 1

Demographic and clinical characteristics overall and by fatigue group

Overall

NF

NF | F

ISF

M/P

CFS-R

CFS


No. (%)

339

41 (12.1)

21 (6.2)

90 (26.6)

145 (42.8)

18 (5.3)

24 (7.1)

Mean Age, years (SD)

45.8 (10.9)

46.9(13.0)

40.6(8.2)

44.5(11.2)

47.3(10.5)

46.4(7.5)

44.7(10.4)

Female (%)

77.0

63.4

71.4

74.4

83.5

72.2

79.2

White (%)

94.1

92.7

100.0

91.1

96.6

83.3

95.8

Education > High School(%)

65.5

80.5

66.7

62.2

63.5

55.6

70.8

Income > $40,000/yr (%)

47.5

58.5

61.9

44.4

43.5

66.7

37.5

Mean BMI (SD)*

28.5 (6.3)

25.3(4.7)

28(5.7)

28.6(6.4)

29.5(6.7)

28.6(5.2)

28.2(6.0)

<18.5: Underweight (%)

3.6

7.3

4.8

2.2

2.8

0.0

8.3

18.5–24.9: Normal (%)

25.7

36.6

23.8

27.8

23.6

22.2

16.7

25–29.9: Overweight (%)

30.5

41.5

33.3

26.7

27.8

38.9

33.3

30–39.9: Obesity (%)

32.8

14.6

33.3

33.3

36.1

33.3

41.7

≥ 40: Extreme obesity (%)

7.4

0.0

4.8

10.0

9.7

5.6

0.0

Neck circumference (cm) Mean (SD)

36.4 (3.8)

35.7 (3.9)

36.4 (3.7)

36.8 (4.1)

36.4 (3.8)

36.3 (2.6)

36.3 (3.3)

≥ 43.18 cm in males (%)

12.8

0.0

16.7

17.4

20.8

0.0

0.0

≥ 40.64 cm in females (%)

6.3

7.7

0.0

12.1

4.2

7.7

0.0

Years fatigued, median (Range)

6.8 (0.3–55.5)

--------

--------

5.9 (0.5–40.8)

7.2 (0.3–55.5)

8.6 (2.1–39.7)

6.5 (1.4–47.8)

Mean Wellness score (SD)

53.0 (22.7)

85.5(14.9)

70.5(17.2)

51.9 (17.0)

44.0 19.3)

56.4 19.2)

39.8 (18.3)

Fatigue severity score Mean (SD)

5.4 (1.0)

-------

------

5.0 (0.9)

5.5 (1.0)

5.6 (0.8)

6.0 (0.6)


*P = 0.0157; P < 0.0001 NF – never fatigued; NF|F – baseline fatigue currently not fatigued; ISF – insufficient symptoms or fatigue for CFS; M/P – medical or psychiatric exclusion; CFS-R – baseline CFS currently remission; CFS – currently CFS

Unger et al. BMC Neurology 2004 4:6   doi:10.1186/1471-2377-4-6

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