Table 3. Performance of Actim and BTNX RDTs at cut-offs of 40 and 80 mg/L using the Afinion as the reference standard.

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

Estimate	Cut-off of 40 mg/L	Cut-off of 80 mg/L
	% (95% CI)	% (95% CI)
Prevalence of positive CRP	26.9 (20.0, 35.1)	11.5 (7.0, 18.1)
Actim
Sensitivity	80.0 (64.3, 90.2)	80.0 (55.3, 93.4)
Specificity	90.5 (83.1, 95.1)	90.4 (83.8, 94.7)
PPV	75.7 (60.1, 86.8)	52.2 (33.0, 70.8)
NPV	92.5 (85.4, 96.4)	97.2 (92.2, 99.2)
BTNX
Sensitivity	94.3 (81.7, 98.7)	86.7 (62.7, 96.8)
Specificity	78.9 (69.8, 86.0)	86.1 (78.7, 91.3)
PPV	62.3 (48.9, 74.1)	44.8 (28.4, 62.4)
NPV	97.4 (91.2, 99.5)	98.0 (93.2, 99.6)