Diagnostic value of oral “beefy red” patch combined with fingertip blood mean corpuscular volume in vitamin B12 deficiency

Table 3 Value of indices diagnosis of B12 deficiency

	N	Validity			Reliability	Accuracy
	N	Sensitivity	Specificity	Youden index*	Kappa value	AUC
Beefy red patch	78	0.963	0.883	0.846	0.853	0.923
MCV > 100 fL	68	0.815	0.933	0.748	0.758	0.920
MCV > 100 fL and “beefy red” patch	65	0.840	0.950	0.790	0.761	0.949

ISSN: 1472-6831