. Author manuscript; available in PMC: 2016 Apr 15.

Published in final edited form as: Gastrointest Endosc. 2014 Nov 1;81(6):1385–1391. doi: 10.1016/j.gie.2014.09.010

TABLE 2.

Sensitivity, specificity, false-negative rate, PPV, NPV, and concordance between the presence of any endoscopic and histologic finding by site

	% Any endoscopic finding	% Any histologic finding^*	Concordance (Cohen's κ)	PPV (TP/TP+FP)	NPV (TN/TN+FN)	Sens	Spec	False-negative rate (1 – sens)
Esophagus (n = 970)	17.4	21.9	0.45^†	62.7	86.8	50.0	91.7	50.0
Stomach (n = 978)	15.6	24.6	0.18^†	43.1	78.8	27.4	88.2	72.6
Duodenum (n = 978)	10.0	10.7	0.42^†	50.0	93.6	46.7	94.4	53.3
Any site (N = 1000)	34.7	40.4	0.32^†	64.8	72.6	55.7	79.5	44.3

PPV, Positive predictive value; NPV, negative predictive value; TP, true positive; FP, false positive; TN, true negative; FN, false negative; Sens, sensitivity; Spec, specificity.

Nonspecific gastritis was not included.

^†

P < .001.