Interrater reliability ICC (2,1) and ICC (2,k).
| ICC (2,1) | ICC (2,k) | |
|---|---|---|
| Round 1 + Round 2 (n = 800) | ||
| SLEDAI-2K | 0.94 | 1.00 |
| SRI-50 | 0.99 | 1.00 |
| PGA | 0.69 | 0.96 |
| Round 1 (n = 400) | ||
| SLEDAI-2K | 0.99 | 1.00 |
| SRI-50 | 0.97 | 1.00 |
| PGA | 0.63 | 0.94 |
| Round 2 (n = 400) | ||
| SLEDAI-2K | 0.99 | 1.00 |
| SRI-50 | 0.98 | 1.00 |
| PGA | 0.60 | 0.94 |
SLEDAI-2K: Systemic Lupus Erythematosus-2000; SRI-50: SLEDAI-2K Responder Index-50; PGA: physician global assessment.