Table 1 Demographic data of ME/CFS and healthy control patients

Male/Female

0/49

0/25

Age (years)

49.4 ± 1.9

51.1 ± 2.7

BMI (kg/m²)

23.3 ± 0.5

23.4 ± 0.6

 Physical Functioning

40.6 ± 3.9*

95.3 ± 1.4

 Role-Physical

7.7 ± 3.1*

96.9 ± 2.2

 Pain

55.9 ± 3.6*

90.0 ± 1.8

 General Health

25.2 ± 2.3*

81.8 ± 2.4

 Energy

16.9 ± 2.3*

71.7 ± 2.5

 Social Functioning

33.0 ± 3.7*

91.9 ± 2.4

 Role-Emotional

71.4 ± 5.9

84.5 ± 5.4

 Emotion

73.2 ± 2.4*

80.6 ± 2.6

Age ME/CFS of first symptoms (years)

31.0 ± 1.8

N/A

Age of ME/CFS diagnosis (years)

37.1 ± 1.7

N/A

Sudden/Gradual ME/CFS onset

33/16

N/A