Table 2 Content validity index values for the individual key domains identified by patients with fibromyalgia
|  | Frequency | Mean importance | Frequency × importance product |
|---|---|---|---|
Patient-identified domains | |||
1. Pain | 100 | 3.8 | 380.0 |
2. Fatigue | 98 | 3.8 | 372.4 |
3. Sleep quality | 91 | 3.7 | 336.7 |
4. Physical function | 84 | 3.5 | 294.0 |
8. Morning stiffness | 79 | 3.5 | 276.5 |
5. Anxiety | 76 | 3.3 | 250.8 |
6. Depression | 72 | 3.4 | 244.8 |
8. Memory problems | 64 | 3.6 | 230.4 |
9. Quality of life | 62 | 3.5 | 217.0 |
10. Occupational dysfunction | 59 | 3.4 | 200.6 |
11. Social dysfunction | 57 | 3.2 | 182.4 |
12 Problems with attention or concentration | 53 | 3.1 | 164.3 |