Table 2.
FM-related characteristics, stress, and control in FM (n = 98) and HC (n = 35) groups
| FM | HC | P-value | |||
|---|---|---|---|---|---|
|
|
|
||||
| Mean | SD | Mean | SD | ||
| Characteristic | |||||
| Pain (FIQ) | 6.34 | 2.34 | 0.19 | 0.47 | <0.001 |
| Fatigue (FIQ) | 7.90 | 2.03 | 2.63 | 2.24 | <0.0001 |
| Sleep (FIQ) | 7.79 | 2.18 | 3.56 | 2.78 | <0.0001 |
| Confusion (POMS) | 10.14 | 4.93 | 6.03 | 5.56 | <0.0001 |
| Depression (FIQ) | 3.76 | 2.74 | 1.51 | 2.65 | <0.0001 |
| Anxiety (FIQ) | 4.48 | 2.83 | 1.94 | 2.30 | <0.0001 |
| Control | |||||
| Internal (PCOISS) | 57.48 | 9.76 | 63.83 | 10.27 | <0.05 |
| External (Mastery Scale) | 16.58 | 3.21 | 18.25 | 3.12 | <0.05 |
| Stress | |||||
| Perceived stress | 28.96 | 5.65 | 24.69 | 7.28 | <0.001 |
Abbreviations: FIQ, Fibromyalgia Impact Questionnaire; FM, fibromyalgia; HC, healthy controls; PCOISS, Perceived Control of Internal States Scale; POMS, Profile of Mood States; SD, standard deviation.