Els van de Vijver

25 Figure 1 I Study design and patient flow (n) Ruling out IBD without referral for endoscopy Referral criteria fulfilled (117) "Free choice" diagnostics Diagnosis: non-IBD (34) Diagnosis: IBD (42) Diagnosis: non-IBD (41) Diagnosis: IBD (0) Diagnosis: non-IBD (0) Faecal calprotectin (117) Diagnosis convincingly explaining the symptoms (25) Complete recovery? Ileocolonoscopy (68) Diagnosis uncertain (24) Diagnosis uncertain (17) 6 months follow-up (41) Ileocolonoscopy (0) Yes No 9