TABLE 3.

Analytical performances of the BYG Carba test, β Carba test, Rapidec Carba NP test, and Neo-Rapid Carb screen kit

Parametera	Results forb:
	BYG	BCT	RCNP	NRCK
Enterobacteriaceae (n = 198)
Sensitivity (%)	100	97.3	91.9	89.2
95% CI	100–100	93.4–100	85.4–98.4	81.8–96.6
Specificity (%)	98.9	97.7	83.9	89.7
95% CI	96–100	93.7–100	74.1–93.8	81.5–97.8
PPV (%)	99.1	98.2	87.9	91.7
95% CI	96.9–100	95–100	80.4–95.5	85–98.3
NPV (%)	100	96.6	89	86.7
95% CI	100–100	91.8–100	80.4–97.7	77.7–95.6
Pseudomonas spp. (n = 89)
Sensitivity (%)	87.3	90.9	90.9	92.7
95% CI	76–98.5	81.2–100	81.2–100	84–100
Specificity (%)	94.1	94.1	88.2	88.2
95% CI	84–100	84–100	74.4–100	74.4–100
Acinetobacter spp. (n = 41)
Sensitivity (%)	72.7	75.8	36.4	27.3
95% CI	53.3–92.1	57.1–94.4	15.4–57.3	7.9–46.7
Specificity (%)	100	87.5	75	100
95% CI	100–100	58.3–100	36.7–100	100–100

^aCI, confidence interval; PPV, positive predictive value; NPV, negative predictive value.

^bBYG, BYG Carba test, BCT, β Carba test, RCNP, Rapidec Carba NP test, NRCK, Neo-Rapid CARB screen kit.