Table 1 Characteristic of participants with ME/CFS (n = 174)—overall functioning and symptom status at intake
Mean | Std. Dev. | Std. error | Min. | Lower quartile | Median | Upper quartile | Max. | |
|---|---|---|---|---|---|---|---|---|
SF-36 (0–100) | ||||||||
Physical function | 41.21 | 23.42 | 1.78 | 0.00 | 25.00 | 40.00 | 55.00 | 100.00 |
Role physical | 16.13 | 28.95 | 2.21 | 0.00 | 0.00 | 0.00 | 25.00 | 100.00 |
Bodily pain | 42.19 | 23.56 | 1.79 | 0.00 | 22.00 | 41.00 | 51.00 | 100.00 |
Vitality | 19.77 | 16.92 | 1.29 | 0.00 | 5.00 | 15.00 | 30.00 | 80.00 |
General health | 27.20 | 17.14 | 1.30 | 0.00 | 15.00 | 25.00 | 35.00 | 77.00 |
Role emotional | 85.96 | 31.69 | 2.42 | 0.00 | 100.00 | 100.00 | 100.00 | 100.00 |
Social function | 27.17 | 23.32 | 1.77 | 0.00 | 0.00 | 25.00 | 37.50 | 100.00 |
Mental health | 68.02 | 18.93 | 1.44 | 16.00 | 56.00 | 72.00 | 84.00 | 96.00 |
MFI-20 (0–20) | ||||||||
General fatigue | 17.95 | 2.46 | 0.19 | 9.00 | 17.00 | 19.00 | 20.00 | 20.00 |
Physical fatigue | 17.31 | 2.69 | 0.20 | 6.00 | 16.00 | 18.00 | 20.00 | 20.00 |
Reduced activity | 15.77 | 3.56 | 0.27 | 5.00 | 14.00 | 16.00 | 19.00 | 20.00 |
Reduced motivation | 11.62 | 3.83 | 0.29 | 4.00 | 9.00 | 12.00 | 14.00 | 20.00 |
Mental fatigue | 14.37 | 3.70 | 0.28 | 4.00 | 12.00 | 15.00 | 17.00 | 20.00 |
CDC-SI | ||||||||
Fatigue duration (yrs) | 13.62 | 10.42 | 0.80 | 0.25 | 5.00 | 12.00 | 21.00 | 61.00 |
Number of CFS symptoms | 5.76 | 2.02 | 0.16 | 0.00 | 5.00 | 6.00 | 7.00 | 8.00 |
CFS symptom score | 50.99 | 24.01 | 1.87 | 0.00 | 36.25 | 51.50 | 66.50 | 115.50 |
PROMIS (T-score) | ||||||||
Sleep disturbance | 58.45 | 7.86 | 0.60 | 38.00 | 54.30 | 58.30 | 63.70 | 76.50 |
Sleep Related impairment | 60.73 | 8.22 | 0.62 | 30.00 | 56.10 | 61.30 | 66.30 | 80.00 |
Pain intensity | 59.56 | 9.09 | 0.69 | 41.00 | 56.10 | 60.90 | 65.50 | 78.30 |
Pain behavior | 56.01 | 7.88 | 0.61 | 36.70 | 54.80 | 58.60 | 60.60 | 68.30 |