HbA1c Cutoff Point of 5.9% Better Identifies High Risk of Progression to Diabetes among Chinese Adults: Results from a Retrospective Cohort Study

Table 3

Predictive value of the diabetes incidence after 3 years of follow-up according to the different IGR definitions at baseline.

	Sensitivity	Specificity	Positive predictive value	Negative predictive value	Positive likelihood ratio	Negative likelihood ratio	Youden index
FPG 6.1–6.9 mmol/L	0.390	0.884	0.215	0.947	3.362	0.690	0.274
2hPG 7.8–11.0 mmol/L	0.343	0.905	0.231	0.944	3.611	0.726	0.248
HbA1c ≥ 5.7%	0.862	0.371	0.100	0.971	1.370	0.372	0.233
HbA1c ≥ 5.9%	0.771	0.580	0.130	0.969	1.836	0.395	0.351