Isolation and diagnosis of Helicobacter pylori by a new method: Microcapillary culture

Table 2 Diagnostic performance parameters of the microcapillary culture method, classical culture, histopathologic examination and rapid urease test

	H. pylori (+) reference	H. pylori (-) control
MCM1
+	25	5
-	1	21
Total	26	26
CC2
+	14	-
-	12	26
Total	26	26
HE3 and CLO4 test
+	17	-
-	9	26
Total	26	26

¹Diagnostic performance parameters of microcapillary culture method (MCM): Sensitivity: 96%, specificity: 80%, positive predictive value (PPV): 83%, negative predictive value (NPV): 95%, kappa: 0.76;

²Diagnostic performance parameters of classical culture (CC): Sensitivity: 54%, specificity: 100%, PPV: 100%, NPV: 68%, kappa: 0.54;

³Diagnostic performance parameters of histopathologic examination (HE): Sensitivity: 65%, specificity: 100%, PPV: 100%, NPV: 74%, kappa: 0.64;

⁴Diagnostic performance parameters of rapid urease (CLO) test: Sensitivity: 65%, specificity: 100%, PPV: 100%, NPV: 74%, kappa: 0.64. H. pylori: Helicobacter pylori.