CRP normalisation according to CDAI cut-offs at week 26
| CDAI week 26 cut-off | True positive (CDAI<cut-off and CRP<0.8 mg/dL) | False negative (CDAI≥cut-off and CRP<0.8 mg/dL) | Prevalence of CRP normalisation (%) | False positive (CDAI<cut-off and CRP≥0.8 mg/dL) | True negative (CDAI≥cut-off and CRP≥0.8 mg/dL) | Prevalence of no CRP normalisation (%) |
|---|---|---|---|---|---|---|
| <50 | 22 | 47 | 71 | 9 | 40 | 29 |
| <100 | 48 | 21 | 71 | 20 | 29 | 29 |
| <150 | 59 | 10 | 66 | 31 | 18 | 34 |
| <220 | 64 | 5 | 61 | 41 | 8 | 39 |
CDAI, Crohn's disease activity index; CRP, C-reactive protein.