Optimal Hemoglobin A1c Levels for Screening of Diabetes and Prediabetes in the Japanese Population

Table 3

Sensitivity, specificity, positive and negative predictive values, positive and negative likelihood ratios, and accuracy for detecting diabetes defined by OGTT.

HbA1c (%)	Youden index	Sensitivity (%)	Specificity (%)	Positive predictive value (%)	Negative predictive value (%)	Positive likelihood ratio	Negative likelihood ratio	Accuracy
≧5.6	0.535	94.2	45.7	10.4	99.2	1.7	0.1	48.8
≧5.7	0.625	94.2	59.3	13.3	99.3	2.3	0.1	61.5
≧5.8	0.685	91.9	70.6	17.3	99.2	3.1	0.1	71.9
≧5.9	0.714	88.4	80.2	23.0	99.0	4.5	0.1	80.7
≧6.0	0.725	83.7	87.6	31.2	98.8	6.8	0.2	87.4
≧6.1	0.660	79.1	93.5	38.2	98.5	12.1	0.2	92.6
≧6.2	0.627	69.8	96.3	55.6	97.9	18.7	0.3	94.6
≧6.3	0.557	65.1	97.6	64.4	97.7	27.0	0.4	95.6
≧6.4	0.526	57.0	98.7	74.2	97.2	43.1	0.4	96.1
≧6.5	0.449	53.5	99.1	79.3	97.0	57.3	0.5	96.2