Table 2.
PSD severity groups and severity variable means according to diagnostic methods
| Group | PSD Severity Category | N (%) | PSD | WPI | SSS | Regions |
|---|---|---|---|---|---|---|
| Physician diagnosis of FM | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | ||
| None (0‐3) | 17 (8.5) | 2.0 (1.1) | 0.8 (0.8) | 1.2 (1.0) | 0.7 (0.7) | |
| Mild (4‐7) | 39 (19.6) | 5.7 (1.0) | 2.4 (1.6) | 3.3 (1.5) | 1.3 (1.0) | |
| Moderate (8‐11) | 41 (20.6) | 9.7 (1.0) | 4.2 (1.9) | 5.5 (2.0) | 2.7 (1.2) | |
| Severe (12‐19) | 70 (35.2) | 14.9 (2.4) | 7.5 (3.0) | 7.3 (2.1) | 3.7 (1.2) | |
| Very severe (20‐31) | 32 (16.1) | 24.0 (3.3) | 14.4 (2.9) | 9.6 (1.9) | 5.0 (0.2) | |
| 2016 FM diagnosis by criteria | ||||||
| None (0‐3) | 0 | |||||
| Mild (4‐7) | 0 | |||||
| Moderate (8‐11) | 0 | |||||
| Severe (12‐19) | 123 (68.0) | 15.8 (1.9) | 8.7 (1.9) | 7.2 (1.7) | 4.6 (0.5) | |
| Very severe (20‐31) | 58 (32.0) | 23.7 (3.1) | 14.1 (3.1) | 9.6 (1.7) | 4.9 (0.3) | |
| All patients | ||||||
| None (0‐3) | 1202 (36.7) | 1.5 (1.2) | 0.4 (0.7) | 1.0 (1.1) | 0.4 (0.6) | |
| Mild (4‐7) | 1022 (31.2) | 5.4 (1.1) | 1.9 (1.4) | 3.5 (1.5) | 1.4 (1.1) | |
| Moderate (8‐11) | 593 (18.1) | 9.3 (1.1) | 3.4 (1.8) | 5.9 (1.8) | 2.2 (1.2) | |
| Severe (12‐19) | 396 (12.1) | 14.3 (2.1) | 6.7 (2.7) | 7.7 (2.3) | 3.4 (1.2) | |
| Very severe (20‐31) | 63 (1.9) | 23.5 (3.1) | 14.1 (3.3 | 9.4 (2.3) | 4.8 (0.6) |
Abbreviations: FM, fibromyalgia; PSD, polysymptomatic distress; Regions, number of regions (0‐5) of generalized pain fibromyalgia 2016 criterion; SSS, symptom severity scale; WPI, widespread pain index; WSP, widespread pain criterion.