Comparison among systemic lupus erythematosus patients, their rheumatologists and their GPs based on seven illness perception dimensions
| ICC, patients–rheumatologists (n=115) | Patients (n=115), mean (SD) | Rheumatologists (n=115), mean (SD) | Cohen’s d | ICC, patients–GPs (n=83) | Patients (n=83), mean (SD) | GPs (n=83), mean (SD) | Cohen’s d | ICC, rheumatologists–GPs (n=79) | Rheumatologists (n=79), mean (SD) | GPs (n=79), mean (SD) | Cohen’s d | |
| Consequences | 0.523*** | 17.6 (5.3) | 18.3 (5.6) | 0.11 | 0.397*** | 17.6 (5.1) | 21.5 (4.3) | 0.71 | 0.407† | 18.2 (5.5) | 21.4 (4.2) | 0.56 |
| Timeline acute/chronic | 0.226 | 24.7 (3.8) | 22.9 (3.2) | 0.38 | 0.261 | 24.9 (3.6) | 26.4 (3.3) | 0.33 | 0.331† | 22.7 (3.1) | 26.3 (3.3) | 0.95 |
| Personal control | −0.076 | 18.6 (4.2) | 17.3 (4.0) | 0.22 | −0.145 | 18.1 (4.4) | 17.3 (4.3) | 0.12 | −0.108 | 17.3 (4.1) | 17.4 (4.3) | 0.02 |
| Treatment control | 0.360** | 17.1 (2.8) | 18.1 (1.9) | 0.31 | 0.154 | 17.1 (2.9) | 17.9 (2.4) | 0.22 | 0.101 | 18.1 (1.7) | 17.9 (2.3) | 0.07 |
| Illness coherence | 0.388** | 17.2 (4.2) | 18.5 (4.3) | 0.25 | 0.325* | 16.9 (4.2) | 18.9 (3.1) | 0.46 | 0.415† | 18.6 (4.4) | 18.9 (3.0) | 0.07 |
| Timeline cyclical | 0.158 | 14.7 (3.6) | 12.1 (3.6) | 0.54 | 0.152 | 15.2 (3.2) | 13.6 (2.5) | 0.42 | 0.102 | 11.9 (3.4) | 13.6 (2.5) | 0.40 |
| Emotional representations | 0.371** | 16.7 (5.5) | 16.1 (5.7) | 0.08 | 0.440** | 16.7 (5.5) | 18.3 (4.1) | 0.28 | 0.462‡ | 15.7 (5.6) | 18.3 (4.1) | 0.46 |
*P≤0.05.
**P≤0.01.
***P≤0.001.
GP, general practitioner; ICC, intraclass correlation coefficient.