Test	Sensitivity percentage (95% CI)	Diagnostic odds ratio (95% CI)	False-negative rate per 1,000 patients (95% CI)	Positive predictive value percentage
Urea breath test-13C	94 (89 to 97)	153 (73.7 to 316)	30 (15 to 58)	92
Urea breath test-14C	92 (89 to 94)	105 (74 to 150)	42 (30 to 58)	92
Serology	84 (74 to 91)	47.4 (25.5 to 88.1)	86 (50 to 140)	91
Stool antigen	83 (73 to 90)	45.1 (24.2 to 84.1)	89 (52 to 146)	91