Ain-Shams Journal of Anesthesiology

Table 2 Predictive ability of BMI, MMT, SMDD, NC, and NC/SMDD ratio for difficult laryngoscopy view (DLV)

From: Sternomental displacement and neck circumference: a new look for the neck as a difficult airway predictor in obese surgical patients—a cohort study

	AUROC	95% CI	P value	Sensitivity	Specificity	+ v predictive	-ve predictive	Cut-off value
BMI	0.65	0.56–0.73	0.005	79%	57%	33%	91%	> 41 kg/m²
MMT	0.94	0.88–.97	0.001	86%	94%	80%	96%	> 2
SMDD	0.97	0.93–0.99	0.001	96%	95%	82%	99%	< 5cm
NC	0.83	0.75–0.86	0.001	75%	87%	60%	93%	> 43cm
NC/SMDD ratio	0.98	0.94–0.99	0.001	99%	99%	86%	100%	> 7.8

AUROC curve, area under the receiver operating characteristic curve, BMI body mass index, MMT modified Mallampati test, SMDD sternomental displacement, NC neck circumference

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