Agreement rates between different modified Boolean remission definitions and the SDAI remission definition in RA patients at 6 months
| Boolean1.0, no in remission/total no (%) | Boolean2.0, no in remission/total no (%) | BooleanX, no in remission/total no (%) | |
| Early RA | |||
| Patients with disease in SDAI-based remission among those fulfilling Boolean remission definition | 153/163 (93.9) | 199/227 (87.7) | 206/297 (69.4) |
| Patients with disease in Boolean-based remission among those fulfilling SDAI remission definition | 153/216 (70.8) | 199/216 (92.1) | 206/216 (95.4) |
| Total concordantly classified | 1,028/1,101 (93.4) | 1,056/1,101 (95.9) | 1,000/1,101 (90.8) |
| Established RA | |||
| Patients with disease in SDAI-based remission among those fulfilling Boolean remission definition | 34/40 (85) | 43/57 (75.4) | 45/95 (47.4) |
| Patients with disease in Boolean-based remission among those fulfilling SDAI remission definition | 34/46 (73.9) | 43/46 (93.5) | 45/46 (97.8) |
| Total concordantly classified | 929/947 (98) | 930/947 (98.2) | 896/947 (94.6) |
RA, rheumatoid arthritis; SDAI, Simplified Disease Activity Index.