Journal of Neurogastroenterology and Motility : eISSN 2093-0887 / pISSN 2093-0879

Table. 2.

Diagnostic Accuracy of Impedance Parameters in Patients With Non-erosive Reflux Disease and Functional Heartburn

Items AET (%) PSPW index (%) MNBI (Ω)
AUC 0.843 0.677 0.914
95% CI 0.753-0.933 0.544-0.810 0.848-0.980
P-value < 0.01 0.021 < 0.01
Cutoff value 4.2 52.9 3562.0
Sensitivity (%) 72.0 60.0 92.0
Specificity (%) 100.0 76.0 80.0
PPV (%) 100.0 82.6 92.0
NPV (%) 58.8 50.0 80.0

AET, acid exposure time; PSPW, post-reflux swallow-induced peristaltic wave; MNBI, mean nocturnal baseline impedance; AUC, areas under the curve; PPV, positive predictive value; NPV, negative predictive value.

J Neurogastroenterol Motil 2021;27:525~532 https://doi.org/10.5056/jnm20073
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