Table 5.
Comparison of clinical characteristics of subjects with 2-hour plasma glucose ≥200 mg/dL (≥11.1 mmol/L) stratified by HbA1c < or ≥ 6.5% (48 mmol/mol).
| Diabetes by 2-hour plasma glucose | P | ||
|---|---|---|---|
| HbA1c < 6.5% (<48 mmol/mol) |
HbA1c ≥ 6.5% (≥48 mmol/mol) |
||
| n | 282 | 110 | |
| Age, year | 64 ± 15 | 60 ± 15 | 0.01 |
| Gender, female | 150 (53.2%) | 42 (38.2%) | 0.008 |
| Body mass index, kg/m2 | 29.7 ± 6.1 | 33.0 ± 6.6 | <0.0001 |
| Systolic blood pressure, mmHg | 132 ± 20 | 132 ± 20 | NS |
| Diastolic blood pressure, mmHg | 68 ± 13 | 70 ± 14 | NS |
|
| |||
| Current smoking, yes | 51 (18.1%) | 32 (29.1%) | 0.02 |
| Alcohol consumption, yes | 192 (68.1%) | 74 (67.3%) | NS |
| Family history of diabetes, yes | 110 (39.0%) | 52 (47.3%) | NS |
|
| |||
| HbA1c, % | 5.7 ± 0.4 | 7.9 ± 1.8 | <0.0001 |
| HbA1c, mmol/mol | 39 ± 5 | 63 ± 18 | |
| Fasting plasma glucose, mg/dL | 83 ± 20 | 176 ± 60 | <0.0001 |
| Fasting plasma glucose, mmol/L | 6.5 ± 1.1 | 9.8 ± 3.3 | |
| Two-hour plasma glucose, mg/dL | 232 ± 31 | 318 ± 82 | <0.0001 |
| Two-hour plasma glucose, mmol/L | 12.9 ± 1.8 | 17.7 ± 4.6 | |
|
| |||
| Racial/ethnic group | 0.004 | ||
| Mexican Americans | 95 (19.5%) | 26 (23.6%) | |
| Other Hispanics | 26 (9.2%) | 9 (8.2%) | |
| Non-Hispanic Whites | 172 (61.0%) | 50 (45.5%) | |
| Non-Hispanic Blacks | 21 (7.5%) | 22 (20.0%) | |
| Others | 8 (2.8%) | 3 (2.7%) | |
Mean ± standard deviation or n with percent; NS, not significant.