Health-related quality of life scores among the Georgians Organized Against Lupus cohort of patients with systemic lupus erythematosus in September 2013–November 2014, overall and by categorised age at survey
| SF-12 domain | N | Mean (SD) norm-based SF-12 scores*: | p Value† | ρ value‡ | p Value‡ | |||
|---|---|---|---|---|---|---|---|---|
| Overall | Age at survey | |||||||
| 20–39 years | 40–59 years | ≥60 years | ||||||
| Physical component summary | 703 | 39.3 (10.9) | 41.8 (11.7) | 38.7 (10.5) | 37.4 (10.0) | <0.001 | −0.18 | <0.001 |
| Physical functioning | 703 | 39.6 (11.3) | 41.9 (11.5) | 39.1 (11.2) | 37.6 (11.0) | <0.001 | −0.17 | <0.001 |
| Role physical | 702 | 39.7 (10.9) | 41.7 (10.9) | 39.0 (10.9) | 38.9 (10.5) | 0.01 | −0.10 | 0.01 |
| Bodily pain | 693 | 39.4 (11.4) | 40.7 (11.6) | 38.9 (11.5) | 38.6 (10.6) | 0.15 | −0.11 | 0.004 |
| General health | 698 | 41.8 (10.7) | 43.5 (11.3) | 40.9 (10.4) | 41.9 (10.2) | 0.02 | −0.08 | 0.03 |
| Mental component summary | 703 | 44.3 (11.4) | 44.2 (11.7) | 43.8 (11.4) | 46.1 (11.2) | 0.14 | 0.06 | 0.09 |
| Mental health | 703 | 45.1 (10.9) | 45.1 (11.3) | 44.5 (10.9) | 46.9 (10.1) | 0.08 | 0.06 | 0.10 |
| Role emotional | 700 | 40.2 (13.4) | 41.1 (13.6) | 39.4 (13.3) | 40.9 (13.3) | 0.30 | −0.01 | 0.85 |
| Social functioning | 698 | 41.4 (11.0) | 42.3 (10.6) | 40.7 (11.1) | 41.7 (11.4) | 0.29 | −0.03 | 0.36 |
| Vitality | 701 | 43.7 (10.2) | 44.3 (10.2) | 43.5 (10.2) | 43.4 (10.3) | 0.63 | −0.03 | 0.42 |
*Among patients with both mental component summary and physical component summary scores.
†By analysis of variance, across indicated categories of age.
‡Pearson's correlation coefficients (ρ) and p values for correlations between domain scores and continuous age.