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Table 4 Reclassification of patients with normal and clinically significant findings undergoing EGD by means of faecal calprotectin measurement

From: Diagnostic yield of endoscopy in patients with abdominal complaints: incremental value of faecal calprotectin on guidelines of appropriateness

EGD Endoscopic finding probability model 2 including EPAGE criteria and faecal calprotectin values
Probability of findings <30% 30-50% >50% Total
Endoscopic finding probability model 1 including EPAGE criteria No findings     
<30% 0 0 0 0
30-50% 13 6 4 23
>50% 6 27 17 50
Total 19 33 21 73
Significant findings     
<30% 0 0 0 0
30-50% 3 0 11 14
>50% 2 21 39 62
  Total 5 21 50 76
  1. Amongst patients with normal EGD, 46 patients (63.0%) were correctly reclassified as at lower risk of endoscopic findings and 4 patients (5.5%) were incorrectly reclassified as at higher risk. Amongst patients with significant findings at EGD, 11 patients (14.5%) were correctly reclassified as at higher risk of significant findings and 26 patients (34.2%) were incorrectly reclassified as at lower risk. The calculated net reclassification index (NRI) was 37.8% (P 0.002).