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World J Diabetes. Dec 15, 2013; 4(6): 349-357
Published online Dec 15, 2013. doi: 10.4239/wjd.v4.i6.349
Published online Dec 15, 2013. doi: 10.4239/wjd.v4.i6.349
Table 1 Definitions of current study variables within different groups
Different groups | Responses and A1c levels |
Prediabetes group | |
Self-reported Prediabetes | “Yes” response to “ever told you have prediabetes,” and a “no” response to “doctor told you have diabetes.” |
Reversed prediabetes | Self-reported “yes” response to “ever told you have prediabetes,”“no” response to “doctor told you have diabetes” and have normoglycemic A1c levels (< 5.7%). |
Diagnosed prediabetes | Self-reported “yes” response to “ever told you have prediabetes,”“no” response to “doctor told you have diabetes” and have prediabetic A1c levels (5.7%-6.4%). |
Undiagnosed diabetes | Self-reported “yes” response to “ever told you have prediabetes,”“no” response to “doctor told you have diabetes” and have diabetic A1c levels (≥ 6.5%). |
Non-Prediabetes group | |
Self-reported non-prediabetes | “No” response to “ever told you have prediabetes,” and a “no” response to “doctor told you have diabetes.” |
Not having prediabetes | Self-reported “no” response to “ever told you have prediabetes,”“no” response to “doctor told you have diabetes” and have normoglycemic A1c levels (< 5.7%). |
Undiagnosed prediabetes | Self-reported “no” response to “ever told you have prediabetes,”“no” response to “doctor told you have diabetes” and have prediabetic A1c levels (5.7%-6.4%). |
Undiagnosed diabetes | Self-reported “no” response to “ever told you have prediabetes,”“no” response to “doctor told you have diabetes” and have diabetic A1c levels (≥ 6.5%). |
Table 2 United States Population 20 years and older with self-reported prediabetes n (%)
Glycated hemoglobin (A1c) | Self-report of: “Yes” ever being told they have prediabetes; and “No” being told they had diabetes | |
NHANES 2007-2008 Weighted | NHANES 2009-2010 Weighted | |
Normoglycemic levels (< 5.7%) reversed prediabetes | 3565229/6566166 (54.3) | 3281804/7569333 (43.4) |
Prediabetic levels (5.7%-6.4%) prediabetes | 2435163/6566166 (37.1) | 3071030/7569333 (40.6) |
Diabetic levels (> 6.5%) undiag nosed/unaware diabetes | 564774/6566166 (8.6) | 1216499/7569333 (16.0) |
Total | n = 6566166 | n = 7569333 |
Table 3 Percentage of different ethnic groups 20 years and older with self-reported prediabetes n (%)
NHANES 2007-2008 | NHANES 2009-2010 | ||||
Ethnicity | Weighted | SD | Weighted | SD | P |
Mexican American | 325142/6566166 (5.0) | 379370/7569333 (5.0) | |||
Normoglycemic A1c (< 5.7%) | 102664/325142 (31.6) | 0.33 | 154730/379370 (40.8) | 0.43 | < 0.0001 |
Prediabetic A1c (5.7%-6.4%) | 140099/325142 (43.1) | 0.46 | 161539/379370 (42.6) | 0.43 | < 0.0001 |
Diabetic A1c (≥ 6.5%) | 82379/325142 (25.3) | 0.44 | 63101/379370 (16.6) | 0.22 | 0.8521 |
Other Hispanic | 172116/6566166 (2.6) | 175097/7569333 (2.3) | |||
Normoglycemic A1c (< 5.7%) | 94137/172116 (54.7) | 0.16 | 104638/175097 (59.8) | 0.43 | 0.3841 |
Prediabetic A1c (5.7%-6.4%) | 73430/172116 (42.7) | 0.43 | 56802/175097 (32.4) | 0.42 | 0.3472 |
Diabetic A1c (≥ 6.5%) | 4549/172116 (2.6) | 0.36 | 13657/175097 (7.8) | 0.12 | 0.9457 |
Non-Hispanic White | 4757294/6566166 (72.5) | 5976593/7569333 (79.0) | |||
Normoglycemic A1c (< 5.7%) | 2571794/4757294 (54) | 0.46 | 2696814/5976593 (45.1) | 0.4 | 0.7869 |
Prediabetic A1c (5.7%-6.4%) | 1872875/4757294 (39.4) | 0.43 | 2311252/5976593 (38.7) | 0.4 | 0.0222 |
Diabetic A1c (≥ 6.5%) | 312625/4757294 (6.6) | 0.23 | 968527/5976593 (16.2) | 0.09 | 0.0024 |
Non-Hispanic Black | 645476/6566166 (9.8) | 757648/7569333 (10) | |||
Normoglycemic A1c (< 5.7%) | 269742/645476 (41.8%) | 0.46 | 212317/757648 (28%) | 0.44 | < 0.0001 |
Prediabetic A1c (5.7%-6.4%) | 210513/645476 (32.6%) | 0.42 | 483049/757648 (63.8%) | 0.44 | < 0.0001 |
Diabetic A1c (≥ 6.5%) | 165221/645476 (25.6%) | 0.43 | 62282/757648 (8.2%) | 0.16 | < 0.0001 |
Other/Multi-Racial | 666138/6566166 (10.1%) | 280625/7569333 (3.7%) | |||
Normoglycemic A1c (< 5.7%) | 527892/666138 (79.2%) | 0.27 | 113305/280625 (40.3%) | 0.41 | 0.0104 |
Prediabetic A1c (5.7%-6.4%) | 138246/666138 (20.8%) | 0.27 | 58388/280625 (20.8%) | 0.41 | 0.7737 |
Diabetic A1c (≥ 6.5%) | 0/666138 (0.0%) | 0.00 | 108932/280625 (38.8%) | 0.13 | 0.0067 |
Total | n = 6566166 | n = 7569333 |
Table 4 United States population 20 years and older with self-reported non-prediabetes n (%)
Glycated hemoglobin (A1c) | Self-report of: “No” ever being told they have prediabetes; and “No” being told they had diabetes | |
2007-2008 weighted | 2009-2010 weighted | |
Normoglycemic levels (< 5.7%) no prediabetes or diabetes | 128918166/164914962 (78.2) | 122536437/161120813 (76.0) |
Prediabetic levels (5.7%-6.4%) undiagnosed/unaware prediabetes | 32926568/164914962 (19.9) | 36065705/161120813 (22.4) |
Diabetic levels (≥ 6.5%) undiagnosed/unaware diabetes | 3070228/164914962 (1.9) | 2518671/161120813 (1.6) |
Total | n = 164914962 | n = 161120813 |
Table 5 Different ethnic groups 20 years and older with self-reported non-prediabetes n (%)
NHANES 2007-2008 | NHANES 2009-2010 | ||
Ethnicity | Weighted | Weighted | P |
Mexican American | 15104701/164914962 (9.2) | 15411565/161120804 (9.6) | |
Normal (A1c ≤ 5.7%) | 12524514/15104701 (82.9) | 11245974/15411161 (73) | < 0.0001 |
Prediabetes (A1c= 5.7%-6.4%) | 2248885/15104701 (14.9) | 3608202/15411161 (23.4) | < 0.0001 |
Diabetes (A1c ≥ 6.5%) | 331302/15104701 (2.2) | 557389/15411161 (3.6) | < 0.0001 |
Other Hispanic | 8878061/164914962 (5.4) | 8645012/161120804 (5.4) | |
Normal (A1c ≤ 5.7%) | 7011142/8878061 (78.9) | 6519914/8645012 (75.4) | < 0.0001 |
Prediabetes (A1c= 5.7%-6.4%) | 1655906/8878061 (18.7) | 1950442/8645012 (22.6) | < 0.0001 |
Diabetes (A1c ≥ 6.5%) | 211013/8878061 (2.4) | 174656/8645012 (2) | < 0.0001 |
Non-Hispanic White | 113923737/164914962 (69.1) | 109714993/161120804 (68.1) | |
Normal (A1c ≤ 5.7%) | 90029378/113923737 (79) | 85687554/109714993 (78.1) | < 0.0001 |
Prediabetes (A1c = 5.7%-6.4%) | 22273553/113923737 (19.6) | 22770821/109714993 (20.8) | < 0.0001 |
Diabetes (A1c ≥ 6.5%) | 1620806/113923737 (1.4) | 1256618/109714993 (1.1) | < 0.0001 |
Non-Hispanic Black | 17698774/164914962 (10.7) | 17766570/161120804 (11) | |
Normal (A1c ≤ 5.7%) | 12238510/17698774 (69.1) | 11922107/17766570 (67.1) | < 0.0001 |
Prediabetes (A1c = 5.7%-6.4%) | 4864294/17698774 (27.5) | 5436479/17766570 (30.6) | < 0.0001 |
Diabetes (A1c ≥ 6.5%) | 595970/17698774 (3.4) | 407984/17766570 (2.3) | < 0.0001 |
Other/Multi-Racial | 9309689/164914962 (5.6) | 9582664/161120804 (5.9) | |
Normal (A1c ≤ 5.7%) | 7114622/9309689 (76.4) | 7160888/9582664 (74.7) | < 0.0001 |
Prediabetes (A1c = 5.7%-6.4%) | 1883930/9309689 (20.2) | 2299761/9582664 (24) | < 0.0001 |
Diabetes (A1c ≥ 6.5%) | 311137/9309689 (3.4) | 112015/9582664 (1.2) | < 0.0001 |
Total | n = 164914962 | n = 161120804 |
- Citation: Aponte J. Prevalence of normoglycemic, prediabetic and diabetic A1c levels. World J Diabetes 2013; 4(6): 349-357
- URL: https://www.wjgnet.com/1948-9358/full/v4/i6/349.htm
- DOI: https://dx.doi.org/10.4239/wjd.v4.i6.349