Table 1.
Sample Characteristics
| FM (n = 18) |
HC (n = 14) |
Descriptive differences between groups (t-tests) | |
|---|---|---|---|
| Demographics | |||
| Age (years) | 43.6 (9.79) | 41.13 (11.91) | t = 0.67, ns |
| Education | Chi-Square = 0.77, ns | ||
| High School | 66.7% | 64.3% | |
| Some College | 5.6% | 14.3% | |
| Bachelors degree or higher | 27.8% | 21.4% | |
| Pain | |||
| Average Pain Intensity (PED) | 55.4 (15.5) | NA | NA |
| % Body Distribution | 55.2 (21.46) | 1.5 (4.20) | t = 9.5, p < .001 |
| Allied Symptoms | |||
| Medical Symptoms (CMSI) | 20.9 (8.32) | 0.9 (0.92) | t = 9.3, p < .001 |
| Depressive Symptoms (CES-D) | 16.28 (9.31) | 0.71 (1.27) | t = 6.2, p < .001 |
| Anxiety (STPI)) | 20.1 (5.9) | 12.1 (2.13) | t = 4.9, p < .001 |
| Mental fatigue | 12.7 (4.03) | 4.7 (.96) | t = 7.5, p < .001 |
| MOS (Somnolence) | 50.0 (24.66) | 12.0 (12.90) | t = 5.4, p < .001 |
| MASQ | 95.6 (18.74) | 65.7 (14.4) | t = 5.1, p < .001 |
| Performance in the Go/NoGo Task | |||
| Accurancy (false Go) | 2.8 (2.84) | 3.2 (3.51) | t = −0.4, ns |
| Reaction time (RT) | 577.5 (151.58) | 570.6 (143.42) | t = 0.1, ns |
FM = Fibromyalgia, HC = Healthy control, CES-D = Center for Epidemiologic Studies Depression Scale, CMSI = Complex Medical Symptom Index, MASQ = Multiple Abilities Self-Report Questionnaire, MOS = Medical Outcomes Study Somnolence Questionnaire, PED = Patient experience diary, STPI = State-Trait Personality Inventory (State anxiety)