Table 1.
Demographic and clinical characteristics of study population and participants subdivided into the three cluster subgroups.
| Study population | Cluster 1 | Cluster 2 | Cluster 3 | p (among clusters) | |
|---|---|---|---|---|---|
| N | 229 | 37 | 102 | 83 | |
| Mean age (SD) | 45.4 (11.5) | 42.8 (10.5) | 46.8 (12.4) | 44.9 (10.6) | >0.05 |
| Sex (M%) | 35.8 | 18.9 | 37.8 | 41.0 | >0.05 |
| Relationship status (%) | |||||
| Single | 12.8 | 11.4 | 12.2 | 14.0 | >0.05 |
| Married or in a serious relationship | 73.1 | 62.9 | 74.5 | 75.6 | |
| Divorced, separated, or widowed | 14.2 | 25.7 | 13.3 | 10.5 | |
| Years of significant pain (SD) | 6.4 (6.6) | 6.8 (4.9) | 7.6 (8.9) | 4.8 (3.2) | >0.05 |
| Average pain intensity | 6.4 (1.9) | 6.5 (1.6) | 6.4 (1.8) | 6.3 (1.8) | >0.05 |
| FMPS (SD) | 81.1 (17.4) | 103.5 (13.6) | 81.7 (14.7) | 71.0 (11.9) | <0.001 |
| ASI (SD) | 22.0 (12.4) | 37.4 (12.9) | 23.9 (9.2) | 13.2 (7.2) | <0.001 |
| AAQ (SD) | 32.1 (7.8) | 41.7 (5.3) | 34.3 (4.7) | 25.6 (6.1) | <0.001 |
| RRAQ (SD) | 16.1 (5.6) | 21.7 (4.9) | 17.3 (4.6) | 12.4 (4.2) | <0.001 |
| PSWQ (SD) | 13.6 (48.4) | 68.2 (7.7) | 51.3 (8.0) | 36.8 (8.4) | <0.001 |