(A) Disease activity categories by DAPSA versus Q-DAPSA and (B) disease activity categories by DAPSA and cDAPSA
| A | Q-DAPSA (n=104) | |||
| Remission (≤4) | Low disease activity (>4 and ≤14) | Moderate disease activity (>14 and ≤28) | High disease activity (>28) | |
| DAPSA | ||||
| Remission (≤4) | 36 (34.6%) | 1 (1.0%) | ||
| Low disease activity (>4 and ≤14) | 38 (36.5%) | 1 (1.0%) | ||
| Moderate disease activity (>14 and ≤28) | 22 (21.2%) | |||
| High disease activity (>28) | 6 (5.8%) | |||
| Weighted Cohen’s Kappa: 0.980 (95% CI: 0.952 to 1.000) | ||||
| B | cDAPSA (n=104) | |||
| Remission (≤ 4) | Low disease activity (>4 and ≤13) | Moderate disease activity (>13 and ≤27) | High disease activity (>27) | |
| DAPSA | ||||
| Remission (≤4) | 37 (35.6%) | |||
| Low disease activity (>4 and ≤ 14) | 1 (1.0%) | 36 (34.6%) | 2 (1.9%) | |
| Moderate disease activity (>14 and ≤28) | 1 (1.0%) | 18 (17.3%) | 3 (2.9%) | |
| High disease activity (>28) | 6 (5.8%) | |||
| Weighted Cohen’s Kappa: 0.932 (95% CI: 0.885 to 0.980) | ||||
Fields highlighted in red indicate that disease activity categories do not match between both compared scores. Percentage values refer to the entire study population included in statistical analysis (n=104).
cDAPSA, clinical DAPSA; DAPSA, Disease activity index for PSoriatic Arthritis; Q-DAPSA, DAPSA calculated with a quick quantitative C reactive protein assay.