Correlations between the 3 techniques of evaluation of patient global assessment and consequently the 3 techniques of evaluation of Disease Activity Score in 108 patients with active RA, at baseline. Values are correlation coefficients (95% CI).
| PGA-HS | PGA-DA | PGA-RAID | DAS28 PGA-HS | DAS28 PGA-DA | DAS28 PGA-RAID | |
|---|---|---|---|---|---|---|
| PGA-HS | 1 | |||||
| PGA-DA | 0.51 (0.35–0.63) | 1 | ||||
| PGA-RAID | 0.77 (0.68–0.84) | 0.68 (0.57–0.77) | 1 | |||
| DAS28 PGA-HS | 0.35 (0.17–0.5) | 0.24 (0.06–0.4) | 0.4 (0.23–0.55) | 1 | ||
| DAS28 PGA-DA | 0.13 (−0.07–0.31) | 0.38 (0.2–0.53) | 0.33 (0.15–0.49) | 0.94 (0.91–0.96) | 1 | |
| DAS28 PGA-RAID | 0.19 (0–0.37) | 0.25 (0.06–0.42) | 0.4 (0.23–0.55) | 0.97 (0.96–0.98) | 0.97 (0.95–0.98) | 1 |
PGA-HS: patient global assessment evaluated using a question related to health status; PGA-DA: PGA evaluated using a question related to rheumatoid arthritis disease activity; PGA-RAID: PGA evaluated using the RAID questionnaire6. DAS28-PGA-HS: Disease Activity Score evaluated using the PGA-HS; DAS28-PGA-DA: DAS evaluated using the PGA-DA; DAS28-PGA-RAID: DAS evaluated using the PGA-RAID.