. Author manuscript; available in PMC: 2018 Sep 1.

Published in final edited form as: Pediatr Infect Dis J. 2017 Sep;36(9):837–843. doi: 10.1097/INF.0000000000001563

Table 2.

Diagnostic accuracy of stool Xpert compared to Xpert and culture of respiratory and non-respiratory samples (per patient analysis), and compared to a clinical decision to treat.

a. Diagnostic accuracy of stool Xpert compared to Xpert and culture of respiratory and non-stool non-respiratory samples
	Sensitivity (%; 95% CI)	Specificity (%; 95% CI)	PPV (%; 95% CI)	NPV (%; 95% CI)
Stool Xpert	23/72 (31.9; 21.4-44.0)	306/307 (99.7; 98.2-100)	23/24 (95.8; 78.9-99.9)	306/355 (86.2; 82.2-89.6)
b. Diagnostic accuracy of stool Xpert compared to clinical decision to treat
	Sensitivity (%; 95% CI)	Specificity (%; 95% CI)	PPV (%; 95% CI)	NPV (%; 95% CI)
Stool Xpert	24/170 (14.1; 9.3-20.3)	209/209 (100; 98.3-100)	24/24 (100; 85.8-100)	209/355 (58.9; 53.6-64.0)

PPV: Positive predictive value; NPV: negative predictive value.