Table 1.
Characteristics of the Framingham Offspring Cohort according to Quintiles of Energy Adjusted Total Carbohydrate Intake and Dietary Glycemic Index1
| Characteristic | Quintiles of dietary carbohydrate |
Quintiles of dietary glycemic index |
||||
|---|---|---|---|---|---|---|
| 1 | 3 | 5 | 1 | 3 | 5 | |
| Age (y) | 53 | 53 | 56 | 53 | 54 | 55 |
| Female (%) | 45 | 56 | 61 | 55 | 51 | 55 |
| Current smoker (%) | 31 | 15 | 14 | 21 | 17 | 21 |
| Multivitamin use (%) | 27 | 30 | 34 | 34 | 27 | 25 |
| Hypertension (%) | 20 | 18 | 19 | 16 | 17 | 20 |
| Physical Activity Score | 35.0 | 34.6 | 35.5 | 35.1 | 35.3 | 34.4 |
| Nutrients (daily intakes)2 | ||||||
| Total Energy (kcal) | 1745 | 1787 | 1789 | 1751 | 1825 | 1730 |
| Total carbohydrate (g) | 172 | 225 | 276 | 209 | 222 | 235 |
| Saturated fat (g) | 24 | 21 | 15 | 20 | 21 | 19 |
| Polyunsaturated fat (g) | 12 | 11 | 9 | 11 | 11 | 11 |
| Dietary fiber (g) | 13 | 17 | 19 | 17 | 17 | 15 |
| Alcohol (g) | 11 | 5 | 2 | 7 | 4 | 2 |
| Magnesium (mg) | 268 | 286 | 299 | 321 | 285 | 248 |
| Dietary glycemic index | 76 | 78 | 79 | 71 | 78 | 84 |
1
All lifestyle characteristics were adjusted for age and sex. Reported nutrient and food intakes are adjusted for age, sex and total energy intake. Tests for trend (based on ordinal variables containing median values for each quintile) were all significant (P < 0.01), except for hypertension use and physical activity (for total carbohydrate intake), polyunsaturated fat intake (dietary glycemic index), age, waist circumference, physical activity score, percentage female and current smokers and total energy intake (dietary glycemic index).
2
Geometric mean.