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Table 3 Sensitivity, specificity, positive predictive value, and negative predictive value for preoperative parameters against difficult laryngoscopy

From: Predictive values of the modified Mallampati test, upper lip bite test, thyromental distance and ratio of height to thyromental distance to predict difficult laryngoscopy in pediatric elective surgical patients 5–12 years old at selected Addis Ababa governmental hospitals, Ethiopia: a multicenter cross-sectional study

Parameters

Sn

Sp

PPV

NPV

AUC

SEa

95% CIb

P-value

Accuracy

MMT

86.4%

91.6%

65.6%

97.3%

.917

0.0266

0.865, 0.969

 < 0.001

90.8%

RHTMD

72.7%

53.8%

22.5%

91.4%

0.810

0.0453

0.721, 0.899

0.001

56.7%

TMD

63.6%

95.8%

73.7%

93.4%

0.902

0.0285

0.847, 0.958

 < 0.001

82.2%

ULBT

72.7%

84.0%

45.7%

94.3%

0.809

0.0472

0.717, 0.902

 < 0.001

90.8%

  1. Sn Sensitivity, Sp Specificity, PPV Positive predictive value, NPV Negative predictive value, AUC Area under the curve, CI Confidence interval. P values are obtained from Fisher’s exact test
  2. aDeLong et al., 1988
  3. bAUC ± 1.96 SE
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BMC Anesthesiology

ISSN: 1471-2253

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