Correlations between Patient-generated Index (PGI) and other outcome measures.
| Mean (SD) | Range (minimum, maximum) | Correlation with PGI, r (p)† | (95% CI) | |
|---|---|---|---|---|
| PGI | 54.3 (27.8) | (0, 100) | — | |
| HAQ | 0.8 (0.6) | (0, 2.4) | −0.33 (0.01) | (−0.54, −0.09) |
| SF-36–Physical functioning | 42.7 (29.3) | (0, 100) | 0.33 (0.01) | (0.09, 0.55) |
| SF-36–Role physical | 50.2 (29.6) | (0, 100) | 0.42 (< 0.01) | (0.20, 0.65) |
| SF-36–Bodily pain | 49.5 (25.4) | (0, 100) | 0.39 (< 0.01) | (0.12, 0.64) |
| SF-36–General health | 44.0 (25.4) | (0, 97) | 0.35 (< 0.01) | (0.12, 0.56) |
| SF-36–Vitality | 40.0 (22.4) | (0, 100) | 0.20 (0.13) | (−0.13, 0.45) |
| SF-36–Social functioning | 61.7 (30.7) | (0, 100) | 0.46 (< 0.01) | (0.22, 0.68) |
| SF-36–Role emotional | 74.3 (33.5) | (0, 100) | 0.26 (0.04) | (−0.04, 0.52) |
| SF-36–Mental health | 69.4 (21.6) | (0, 100) | 0.28 (0.03) | (−0.02, 0.49) |
| SF-36–PCS | 34.1 (11.5) | (13.8, 57.8) | 0.39 (< 0.01) | (0.16, 0.60) |
| SF-36–MCS | 47.4 (13.0) | (10.8, 64.7) | 0.26 (0.04) | (−0.04, 0.52) |
| SBI–Appearance | 2.6 (3.3) | (0, 10) | −0.36 (< 0.01) | (−0.57, −0.08) |
| SBI–Bowel | 3.8 (3.3) | (0, 10) | −0.37 (< 0.01) | (−0.60, −0.10) |
| SBI–Calcinosis | 1.4 (2.9) | (0, 10) | −0.38 (< 0.01) | (−0.57, −0.15) |
| SBI–Eating | 3.2 (3.3) | (0, 10) | −0.13 (> 0.20) | (−0.42, 0.17) |
| SBI–Hand | 5.0 (3.2) | (0, 10) | −0.33 (0.01) | (−0.56, −0.06) |
| SBI–Pain | 5.1 (3.1) | (0, 10) | −0.50 (< 0.01) | (−0.72, −0.28) |
| SBI–Shortness of breath | 3.6 (3.5) | (0, 10) | −0.11 (> 0.20) | (−0.38, 0.13) |
| SBI–Skin | 4.4 (3.1) | (0, 10) | −0.35 (< 0.01) | (−0.59, −0.09) |
| SBI–Sleeping | 4.0 (3.4) | (0, 10) | −0.35 (< 0.01) | (−0.61, −0.08) |
| SBI–Burden | 6.2 (2.2) | (0, 9) | −0.46 (< 0.01) | (−0.65, −0.22) |
↵† Pearson correlation coefficients were used to compare PGI scores with patient-reported outcomes. SF-36: Medical Outcomes Study Short Form-36; SBI: Symptom Burden Index; PCS: physical component summary score; MCS: mental component summary score.