Regular arrangement of collecting venules: Does patient age affect its accuracy?

Table 2 The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of regular arrangement of collecting venules as a marker for detecting Helicobacter pylori negative gastric mucosa for all patients and patients < 60 and ≥ 60 years

	All Patients(n= 390 )	< 60 years(n=139)	≥ 60 years(n= 251)	P value
Sensitivity	91.70%	94.70%	80%	≤ 0.001
Specificity	66.10%	71.20%	64.30%	> 0.05
Positive predictive value	18.80%	46.20%	5.10%	≤ 0.001
Negative predictive value	99%	98.10%	93%	> 0.05
Accuracy	68.10%	76.10%	64.60%	0.02

RAC: Regular arrangement of collecting venules; Helicobacter pylori (H. pylori).