Table 2. Dietary intake of participants, stratified by age group.
| 19–30 years | 31–50 years | 51–70 years | 71 + years | 1ptrend | |
|---|---|---|---|---|---|
| Dietary GI | 54.9 ± 6.6 | 54.0 ± 6.7 | 53.2 ± 7.2 | 53.2 ± 6.0 | <0.001 |
| Dietary GL | 154.5 ± 62.8 | 137.5 ± 56.5 | 124.6 ± 56.7 | 113.4 ± 44.3 | <0.001 |
| Dietary GL/MJ | 15.0 ± 4.2 | 14.1 ± 4.2 | 13.4 ± 4.3 | 14.0 ± 3.7 | <0.001 |
| Dietary GI < 45 (%) | 9.1 | 10.1 | 12.6 | 11.0 | 0.009 |
| Energy (kJ) | 10342 ± 3063 | 9839 ± 3095 | 9351 ± 2851 | 8086 ± 2326 | <0.001 |
| Energy from fat (%) | 31.8 ± 9.1 | 31.4 ± 8.3 | 31.2 ± 8.7 | 30.7 ± 8.3 | <0.001 |
| Energy from saturated fat (%) | 12.6 ± 4.7 | 12.4 ± 4.5 | 12.1 ± 4.8 | 12.6 ± 5.0 | 0.061 |
| Energy from protein (%) | 17.4 ± 5.7 | 18.0 ± 5.6 | 18.0 ± 5.5 | 17.9 ± 5.1 | 0.025 |
| Energy from carbohydrates (%) | 45.0 ± 10.0 | 43.0 ± 10.4 | 41.3 ± 10.8 | 43.6 ± 9.7 | <0.001 |
| Energy from total sugars (%) | 19.5 ± 8.5 | 18.9 ± 8.8 | 18.2 ± 8.4 | 20.3 ± 8.0 | 0.491 |
| Energy from starch (%) | 24.7 ± 9.5 | 23.2 ± 9.3 | 22.1 ± 9.2 | 22.4 ± 7.6 | <0.001 |
| Fibre density (g/MJ) | 2.4 ± 1.1 | 2.6 ± 1.1 | 2.8 ± 1.2 | 3.2 ± 1.3 | <0.001 |
Values were presented as mean ± SD for continuous variables and as percentages for categorical variables. Data were weighted to account for over- or under-sampling to enable representation of the general Australian population.
1p values represent p for trend across age groups tested by linear regression for continuous variables, and for categorical variables the p values were tested by χ2 test.