Table 2.

Prevalence of Diabetes in US Adults According to Different HbA1c Cutoffs

		Prevalence (%)
		FPG≥126 mg/dL		2-hr glucose≥200 mg/dL and FPG<126 mg/dL		FPG≥126 mg/dL and/or 2-hr glucose≥200 mg/dL		FPG≥126 mg/dL and 2-hr glucose≥200 mg/dL
	HbA1c cutoff (%)	HbA1c (above noted cutoff )	Diabetes	HbA1c (above noted cutoff )	Diabetes	HbA1c (above noted cutoff )	Diabetes (above noted cutoff )	HbA1c (above noted cutoff )	Diabetes
All	6.2	6.1	4.7	3.5	4.6	6.1	9.1	6.1	3.1
	6.3	4.6		2.0		4.6		4.6
	6.4	3.5		1.3		3.5		3.5
	6.5	2.8		0.8		2.8		2.8
	6.6	2.3		0.5		2.3		2.3
Male	6.2	6.9	6.0	3.5	4.2	6.9	9.9	6.9	3.8
	6.3	5.3		2.1		5.3		5.3
	6.4	4.2		1.4		4.2		4.2
	6.5	3.4		0.8		3.4		3.4
	6.6	2.9		0.6		2.9		2.9
Female	6.2	5.4	3.4	3.4	5.0	5.4	8.2	5.4	2.4
	6.3	3.9		1.9		3.9		3.9
	6.4	2.8		1.1		2.8		2.8
	6.5	2.1		0.7		2.1		2.1
	6.6	1.7		0.5		1.7		1.7
NHW	6.2	4.8	4.8	2.3	5.4	4.8	10.0	4.8	3.2
	6.3	3.7		1.2		3.7		3.7
	6.4	2.8		0.7		2.8		2.8
	6.5	2.3		0.5		2.3		2.3
	6.6	1.7		0.3		1.7		1.7
NHB	6.2	9.6	4.2	7.1	2.1	9.6	6.3	9.6	2.8
	6.3	6.8		4.4		6.8		6.8
	6.4	5.3		3.2		5.3		5.3
	6.5	4.2		2.2		4.2		4.2
	6.6	3.3		1.4		3.3		3.3
MEX	6.2	6.0	5.3	2.4	4.9	6.0	9.9	6.0	3.7
	6.3	4.8		1.5		4.8		4.8
	6.4	3.7		0.8		3.7		3.7
	6.6	3.0		0.4		3.0		3.0
20–39 years	6.2	1.8	1.8	0.7	0.9	1.8	2.7	1.8	1.2
	6.3	1.0				1.0		1.0
	6.4	1.0		0.1	0.9	1.0		1.0
	6.5	0.9				0.9		0.9
	6.6	0.7				0.7		0.7
40–59 years	6.2	5.5	4.0	2.9	3.2	5.5	7.0	5.5	2.3
	6.3	4.3		1.8		4.3		4.3
	6.4	3.2		1.1		3.2		3.2
	6.5	2.5		0.7		2.5		2.5
	6.6	2.1		0.4		2.1		2.1
60–79 years	6.2	11.8	8.8	7.6	10.9	11.8	18.7	11.8	6.2
	6.3	9.0		4.7		9.0		9.0
	6.4	6.8		3.0		6.8		6.8
	6.5	5.3		1.9		5.3		5.3
	6.6	4.3		1.4		4.3		4.3

Prevalence in adults without known diabetes.

HbA1c, glycated hemoglobin; FPG, fasting plasma glucose; NHW, non-Hispanic white; NHB, non-Hispanic black; MEX, Mexican American.