Table 2.
Demographic data and key variables classified according to the ICF model.
| Mean | SD | Range | N | |
|---|---|---|---|---|
| Demographics | ||||
| Age (years) | 45.5 | 9.66 | 20.4–71.5 | 271 |
| Symptom duration (months) | 122 | 102 | 6–540 | 227 |
| Body mass index (BMI) | 26.9 | 5.5 | 16.9–45.7 | 270 |
|
| ||||
| Never | Sometimes | Daily | N | |
|
| ||||
| Pain medication | ||||
| Weak analgesics | 3% | 63% | 34% | 237 |
| NSAID's | 39% | 43% | 18% | 230 |
| Opioids | 56% | 23% | 21% | 231 |
| Yes | No | N | ||
| Antidepressants | 31% | 69% | 237 | |
| Pain-related work interference | ||||
| Changes or permanent disability from usual working activity due to pain | 82% | 18% | 235 | |
| Applied for permanent disability pension at some stage | 25% | 75% | 231 | |
| Currently holding a position or enrolled in education | 21% | 239 | ||
| Currently on long-term sick leave | 25% | 239 | ||
| Currently receiving social benefits or socials services of some sort | 34% | 239 | ||
|
| ||||
| Mean | SD | Range | N | |
|
| ||||
| Body | ||||
| Muscle strength UE (PTQ extension) | 84.94 | 36.88 | 7–199 | 249 |
| Muscle strength UE (PTQ flexion) | 40.23 | 18.41 | 5–85 | 249 |
| Grip strength, max. | 174.96 | 82.24 | 8–408 | 258 |
| Vitality (SF-36) | 21.88 | 17.26 | 0–75 | 268 |
| Fatigue (FIQ) | 8.01 | 1.95 | 1.3–10 | 267 |
| Rest (FIQ) | 7.57 | 2.33 | 0–10 | 266 |
| Well-being (SF-36) | 55.62 | 20.61 | 0–100 | 268 |
| Well-being (FIQ) | 7.32 | 2.66 | 0–10 | 258 |
| Anxiety (FIQ) | 4.46 | 3.43 | 0–10 | 267 |
| Anxiety (GAD-10) | 19.17 | 9.78 | 1–50 | 268 |
| Depression (FIQ) | 3.81 | 3.42 | 0–10 | 268 |
| Depression (MDI) | 21.60 | 10.68 | 3–50 | 268 |
| Bodily pain (SF-36) | 24.07 | 15.03 | 0–84 | 268 |
| Pain intensity (FIQ) | 7.07 | 1.95 | 0–10 | 268 |
| Muscle stiffness (FIQ) | 6.25 | 2.75 | 0–10 | 265 |
| Tiredness mobility (Mob-T) | 1.68 | 1.61 | 0–6 | 257 |
| Pain detection threshold (PDT) | 12.16 | 7.52 | 0.3–46.2 | 229 |
| Pain tolerance threshold (PTT) | 31.65 | 14.73 | 9.2–86.7 | 229 |
| Activity and participation | ||||
| ADL ability motor (AMPS) | 1.07 | 0.50 | 0.4–2.82 | 257 |
| ADL ability process (AMPS) | 1.09 | 0.35 | 0.12–2.18 | 257 |
| Walking speed (6-MW) | 449.67 | 114.37 | 94.6–712.1 | 259 |
| Activity limitations (FIQ) | 5.24 | 2.22 | 0–9 | 267 |
| Physical functioning (SF-36) | 42.88 | 20.01 | 0–95 | 268 |
| Role physical (SF 36) | 9.71 | 21.03 | 0–100 | 267 |
| Role emotional (SF-36) | 45.12 | 43.30 | 0–100 | 263 |
| Social functioning (SF-36) | 48.04 | 26.47 | 0–100 | 268 |
| Days of sick leave pr. week (FIQ) | 1.12 | 1.68 | 0–6 | 70 |
| Work ability (FIQ) | 6.62 | 2.50 | 0–10 | 72 |
| Personal | ||||
| Catastrophizing (CSQ) | 15.91 | 8.35 | 0–36 | 266 |
| Perceived control over pain (CSQ) | 2.40 | 1.38 | 0–6 | 266 |
| Ability to decrease pain (CSQ) | 2.28 | 1.22 | 0–6 | 264 |
| Global measures | ||||
| FIQ total | 61.32 | 18.53 | 2.9–97.4 | 268 |
| SF-36 PCS | 26.95 | 6.68 | 8.8–50.7 | 268 |
| SF-36 MCS | 40.68 | 11.96 | 14.9–66.6 | 268 |
| General health (SF-36) | 31.60 | 18.15 | 0–97 | 267 |
GAD-10: generalized anxiety disorder; MDI: major depression inventory; SF-36: short-form-36 health survey; FIQ: fibromyalgia impact questionnaire; SF-36 PCS: SF-36 physical composite score; PTQ: peak torque; SF-36 MCS: SF-36 mental composite score; CSQ: coping strategy questionnaire; AMPS: assessment of motor and process skills; 6-MW: 6-minute walk; Mob-T: mobility tiredness.