Table 2.
MANCOVA adjusted for years since RA diagnosis between clusters subgroups.
| Cluster 1 mean (SE) | Cluster 2 mean (SE) | Mean difference between Cluster 1 and Cluster 2 (SE) | p | |
|---|---|---|---|---|
| Disability and quality of life | ||||
| HAQ total | 1.08 (0.97) | 1.08 (0.97) | 0.03 (0.10) | 0.749 |
| SF-36 physical functioning | 19.63 (0.62) | 18.95 (0.49) | 0.68 (0.80) | 0.540 |
| SF-36 role physical | 5.63 (0.18) | 5.35 (0.14) | 0.29 (0.23) | 0.123 |
| SF-36 bodily pain | 6.27 (0.23) | 6.25 (0.18) | 0.02 (0.30) | 0.912 |
| SF-36 general health | 15.82 (0.30) | 15.96 (0.24) | −0.13 (0.39) | 0.894 |
| SF-36 vitality | 15.08 (0.26) | 15.59 (0.20) | −0.52 (0.33) | 0.269 |
| SF-36 social function | 5.96 (0.31) | 6.35 (0.24) | −0.39 (0.40) | 0.433 |
| SF-36 role emotional | 4.73 (0.15) | 4.70 (0.11) | 0.03 (0.19) | 0.489 |
| SF-36 mental health | 20.99 (0.25) | 21.33 (0.20) | −0.35 (0.32) | 0.331 |
| SF-36 reported health | 2.78 (0.10) | 2.99 (0.8) | −0.21 (0.12) | 0.209 |
|
| ||||
| Distress and coping | ||||
| DASS depression | 4.78 (0.34) | 2.43 (0.26) | 2.4 (0.4) | 0.001 |
| DASS anxiety | 5.88 (0.39) | 3.28 (0.30) | 2.6 (0.5) | 0.001 |
| DASS stress | 5.22 (0.33) | 2.60 (0.25) | 2.6 (0.4) | 0.001 |
| PASS escape avoidance | 11.00 (0.62) | 8.07 (0.48) | 2.9 (0.8) | 0.001 |
| PASS cognitive anxiety | 11.01 (0.60) | 6.74 (0.47) | 4.3 (0.8) | 0.001 |
| PASS fearful thinking | 7.53 (0.61) | 3.19 (0.47) | 4.3 (0.8) | 0.001 |
| PASS physiological anxiety | 5.64 (0.46) | 2.69 (0.36) | 2.9 (0.6) | 0.001 |
| PCS rumination | 11.20 (0.53) | 8.11 (0.41) | 3.1 (0.7) | 0.001 |
| PCS magnification | 6.24 (0.23) | 4.43 (0.17) | 1.8 (0.3) | 0.001 |
| PCS helplessness | 11.15 (0.41) | 7.92 (0.31) | 3.2 (0.5) | 0.001 |
Significant values are shown in bold.
DASS: Depression Anxiety Stress Scale; HAQ-DI: Health Assessment Questionnaire-Disability Index; PASS: Pain Anxiety Sensitivity Scale; PCS: Pain Catastrophizing Scale; RA: rheumatoid arthritis; SE: standard error; SF-36: 36-Item Short Form Health Survey.