. 2015 Jul 7;5:11959. doi: 10.1038/srep11959

Table 1. Determination of important diagnostic parameters related to cut-off values of 1/ISI _0,120 and δ_DOB¹³ C (‰) by ICOS method for screening individuals with non-diabetic control (NDC), pre-diabetes (PD) and type 2 diabetes (T2D).

Groups	Cut-off points of δ_DOB¹³C‰	Sensitivity	Specificity	PPV	NPV	AUC	Accuracy
NDC vs PD	29.4	94.7%	97.2%	97.3%	94.6%	0.97	95.9%
PD vs T2D	24.4	97.9%	92.1%	93.8%	97.2%	0.98	95.3%

Groups	Cut-off points of 1/ΙSI_0,120	Sensitivity	Specificity	PPV	NPV	AUC	Accuracy
NDC vs PD	0.0149	92.1%	100%	100%	92.3%	0.963	95.9%
PD vs T2D	0.0237	95.7%	95.7%	95.7%	94.7%	0.954	95.3%

AUC: area under the curve; PPV: positive predictive value; NPV: negative predictive value.

Table 1. Determination of important diagnostic parameters related to cut-off values of 1/ISI 0,120 and δDOB13 C (‰) by ICOS method for screening individuals with non-diabetic control (NDC), pre-diabetes (PD) and type 2 diabetes (T2D).