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

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

EGD	Endoscopic finding probability model 2 including EPAGE criteria and faecal calprotectin values
EGD	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

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).

ISSN: 1471-230X