Table 1 .

Performances of the monoclonal stool antigen test according to age group, and for all children

Age group (y)	n (Hp+)	Sensitivity	Specificity	Accuracy	PPV	NPV
<6	116 (18)	94.4 [72.7–99.9]	98.0 [92.8–99.8]	97.4 [92.6–99.5]	89.5 [66.9–98.7]	99.0 [94.4–99.9]
≥6–<12	106 (42)	97.6 [87.4–99.9]	100 [94.4–100]	99.1 [94.9–99.9]	100 [91.4–100]	98.5 [91.7–99.9]
≥12–<18	80 (32)	100 [89.1–100]	100 [92.6–100]	100 [95.5–100]	100 [89.1–100]	100 [92.6–100]
All children	302 (92)	97.8 [92.4–99.7]	99.0 [96.6–99.9]	98.7 [96.6–99.6]	97.8 [92.4–99.7]	99.0 [96.6–99.9]

PPV, positive predictive value; NPV, negative predictive value.

Hp+, Helicobacter pylori positive.

Values are median [5th–95th percentiles].