| Variable | FM (%) | SFC (%) | FM+SFC (%) | Control (%) |
|---|---|---|---|---|
| Family history of Fibromyalgia | 15,4 | 18,9 | 22,4 | – |
| Personal history of previous psychopathology | 23,0 | 42,2* | 37,3* | 5,8* |
| Age of onset of principal symptom | 37,1 | 36,0 | 34,6 | – |
| Chronicpainevolution time (months) | 129,3 | 69,7* | 136,8 | – |
| Fatigue evolution time (months) | 106,1 | 104,7 | 129,6 | – |
| Currentlevel ofpain (VAS 1-10 cm) | 7,2 | 6,4 | 7,5 | – |
| Extensionof pain (number of painareas) | 15,1 | 11,9 | 16,0 | – |
| Number of tender points (0-18) | 14,9 | 3,4* | 14,0 | 0,4* |
| Number ofcomorbidities | 1,6 | 1,9* | 2,2* | – |
| Number ofpsychiatriccomorbidities | 0,4 | 0,5* | 0,6* | – |
| Autonomousdysfunction | 5,6 | 6,3* | 6,5* | – |
| Immunological symptoms | 3,2 | 3,6* | 4,0* | – |
| Major depression /dysthymia | 0,2 | 0,3* | 0,35* | – |
| Unrefreshing sleep | 82,0% | 96,2% | 87,1% | – |
| Pittsburg Sleep Quality Index | 13,6 | 12,4 | 14,5 | 6,1* |
| SF-36 (Quality of Life) Physical Dimension | 28,2 | 27,2 | 26,1 | 48,2* |
| SF-36 (Quality of Life) Mental Dimension | 36,6 | 38,2 | 34,6 | 46,3* |
*p<0.001.