TABLE 4.

The detection performance of microfluidic chip-based LAMP amplification method for discriminating CPO from non-CPO directly from positive BCs

Bacteria	Total (n)	Carb posa (n)	Carb negb (n)	Accuracy [95% CIc]	Sensitivity [95% CI]	Specificity [95% CI]	PPVd [95% CI]	NPVe [95% CI]
Total	133	18	115	94.0 [88.4–97.1]	100.0 [73.2–100.0]	93.2 [86.7–96.8]	63.6 [40.8–82.0]	100.0 [95.8–100.0]
Enterobacteriaceae	112	14	98	95.5 [89.7–98.3]	100.0 [70.0–100.0]	95.0 [88.2–98.1]	70.6 [44.1–88.6]	100.0 [95.2–100.0]
Non-fermentative	21	4	17	85.7 [64.5–95.9]	100.0 [19.8–100.0]	84.2 [59.5–95.8]	40.0 [7.0–82.9]	100.0 [75.9–100.0]

^aCarb Pos: Carbapenemase positive.

^bCarb Neg: Carbapenemase negative.

^c95% CI: 95% confidence interval.

^dPPV: Positive predictive value.

^eNPV: Negative predictive value.