Clinical characteristics by cluster group for sample 1. Some discrepancies between number of persons in the 4 groups (second row) and the number of persons in the second and third rows are due to missing items.
| Characteristic | Cluster | p | Subgroup Comparisons | |||
|---|---|---|---|---|---|---|
| 1 Perfect Health (PH) | 2 Regional Pain (RP) | 3 Widespread Pain (WP) | 4 Fibromyalgia (FM) | |||
| No. of persons (%) | 724 (58.1) | 357 (28.6) | 94 (7.5) | 72 (5.8) | ||
| Female | 354 (48.9) | 210 (58.8) | 51 (54.3) | 43 (59.7) | 0.01 | |
| Male | 370 (51.1) | 147 (41.2) | 43 (45.7) | 29 (40.3) | ||
| Social class index* | ||||||
| Low | 52 (8.6) | 48 (15.0) | 28 (30.8) | 19 (28.8) | < 0.001 | |
| Middle | 422 (69.5) | 220 (68.5) | 50 (54.9) | 41 (62.1) | ||
| High | 133 (21.9) | 53 (16.5) | 13 (14.3) | 6 (9.1) | ||
| Age, yrs* | 44.7 (17.6) | 51.0 (18.0) | 62.7 (13.4) | 61.3 (16.4) | < 0.001 | 1 < 2, 3, 4 2 < 3, 4 |
| SF-12 Physical summary score* | 54.8 (5.1) | 49.2 (7.8) | 43.3 (8.3) | 37.7 (7.9) | < 0.001 | 4 < 1–3 1, 2 < 3 2 < 1 |
| SF-12 Mental summary score* | 59.3 (5.1) | 51.7 (7.8) | 51.9 (7.2) | 42.1 (9.9) | < 0.001 | 4 < 1–3 3 < 1 2 < 1 |
| Oslo Social Support Scale* | 10.6 (2.2) | 9.7 (2.2) | 9.7 (2.2) | 8.3 (2.5) | < 0.001 | 4 < 1–3 3 < 1 2 < 1 |
↵* Mean (SD).