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Table 2 Sensitivity and specificity of M-ECC and chromID CARBA to detect bla IMP-positive CPE in stool specimens

From: Development of selective medium for IMP-type carbapenemase-producing Enterobacteriaceae in stool specimens

Method

 

bla IMP

Sensitivity (%) (95% CI)

Specificity (%) (95% CI)

PPV (%) (95% CI)

NPV (%) (95% CI)

PLR

Positive

(n = 144)

Negative

(n = 891)

M-ECC

Positive

143

6

99.3 (96.2–100.0)

99.3 (98.5–99.8)

96.0 (91.4–98.5)

99.9 (99.3–100.0)

147.5

Negative

1

885

ChromID

CARBA

Positive

20

0

13.9 (8.7–20.6)

100.0 (99.6–100.0)

100.0 (83.2–100.0)

87.8 (85.6–89.7)

NA

Negative

124

891

  1. CI confidential interval, PPV positive predictive value, NPV negative predictive value, PLR positive likelihood ratio, NA not applicable