Table 4.

Cut-off value and area under curve (AUC) of variables for prediction of HbA1c > 7.0% risk in diabetic subjects

	Cut-off value	Sensitivity	Specificity	Youden Index	AUC(95%CI)	p valuea	p value
FBG	7.38	0.7506	0.8387	0.5893	0.864(0.840–0.886)	< 0.001	< 0.022b
TyG	9.22	0.5762	0.6989	0.2751	0.684(0.653–0.714)	< 0.001	< 0.022b
TyG-WC	813.33	0.4336	0.7376	0.1713	0.604(0.571–0.635)	< 0.001	< 0.022b
TyG-BMI	227.77	0.4790	0.6366	0.1156	0.574(0.541–0.606)	< 0.001	< 0.022c
TC	5.98	0.2185	0.8753	0.0938	0.547(0.514–0.580)	0.013	0.283d

HbA1c glycated haemoglobin A1c, FBG fasting blood glucose, TyG the product of triglycerides and fasting blood glucose, TC total cholesterol, TG triglycerides, WC waist circumstance, BMI body mass index, CI confidence interval

^aAUC of each variable compared with 0.5

^bAUC of the indicated variable compared with all the other variables

^cAUC of TyG-BMI compared with AUC of all the other variables except for TC

^dAUC of TC compared with AUC of TyG-BMI