Table 1.
Descriptive statistics of the scales used and demographic variables, for fibromyalgia patients (FM) and healthy controls (HC).
| Variable | FM (n = 18) mean (SD) | HC (n = 22) mean (SD) | t | p | Cohen's d |
|---|---|---|---|---|---|
| Age | 43.9 (7.6) | 45.1 (7.2) | −0.5 | p = 0.61 | – |
| Years of education | 10.4 (3.5) | 11.3 (3.3) | −0.8 | p = 0.42 | – |
| Symptom Severity Scale (SSS) | 9.8 (2.3) | 2.5(2.3) | 10.0 | p < 0.001 | 3.17 |
| Widespread Pain Index (WPI) | 14.0 (4.8) | 1.7 (1.8) | 10.2 | p < 0.001 | 3.39 |
| VAS. Pain | 7.7 (2.0) | 1.4 (1.6) | 11.0 | p < 0.001 | 3.47 |
| VAS. Health status | 7.6 (2.3) | 2.3 (2.7) | 6.7 | p < 0.001 | 2.11 |
| VAS. Mood status | 7.4 (2.9) | 2.9 (2.3) | 5.4 | p < 0.001 | 1.71 |
| VAS. Functional affectation | 8.2 (2.4) | 0.1 (0.3) | 15.4 | p < 0.001 | 4.73 |
| VAS. Non-restorative sleep | 8.6 (2.1) | 2.1 (2.4) | 8.4 | p < 0.001 | 2.88 |
| VAS. Attention | 6.9 (1.7) | 2.2 (2.0) | 7.9 | p < 0.001 | 2.53 |
| VAS. Memory | 8.0 (1.8) | 2.6 (2.1) | 8.5 | p < 0.001 | 2.76 |
| VAS. Concentration | 7.6 (1.9) | 2.5 (2.4) | 7.3 | p < 0.001 | 2.35 |
| Memory failures of everyday (MFE-30) | 73.2 (22.5) | 20.6(13.9) | 8.9 | p < 0.001 | 2.81 |