Adjusted means and 95% CIs of nutrient intakes by quintile of diet cost: all subjects (n=1295)
| I | II | III | IV | V | p Trend | |
| n=256 | n=254 | n=257 | n=256 | n=255 | ||
| Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | ||
| Diet cost ($/day) | 5.7 (5.5 to 5.9) | 7.42 (7.2 to 7.6) | 8.6 (8.4 to 8.8) | 10.08 (9.9 to 10.2) | 13.43 (13.2 to 13.7) | <0.001 |
| Vitamin A (μg, RAE) | 650 (567 to 733) | 780 (712 to 849) | 901 (836 to 965) | 1064 (995 to 1132) | 1281 (1191 to 1370) | <0.001 |
| Vitamin C (mg) | 63 (53 to 73) | 91 (82 to 99) | 104 (96 to 112) | 126 (118 to 135) | 162 (152 to 173) | <0.001 |
| Vitamin E (mg) | 7.9 (7.2 to 8.6) | 8.3 (7.7 to 9) | 9.6 (9.1 to 10.2) | 9.6 (9 to 10.2) | 11 (10.2 to 11.8) | <0.001 |
| Calcium (mg) | 824 (768 to 881) | 863 (816 to 909) | 873 (829 to 918) | 896 (849 to 943) | 984 (923 to 1045) | 0.002 |
| Magnesium (mg) | 247 (237 to 257) | 276 (268 to 285) | 293 (285 to 301) | 314 (306 to 323) | 372 (361 to 384) | <0.001 |
| Potassium (mg) | 2196 (2102 to 2289) | 2531 (2454 to 2608) | 2754 (2681 to 2827) | 3000 (2922 to 3077) | 3576 (3475 to 3677) | <0.001 |
| Dietary fibre (g) | 14.4 (13.4 to 15.3) | 16.9 (16.2 to 17.7) | 18.4 (17.6 to 19.1) | 20.2 (19.4 to 21.0) | 24.4 (23.4 to 25.4) | <0.001 |
| Nutrient density 7 (mean percentage DV)* | 68.5 (65.6 to 71.4) | 76.9 (74.5 to 79.3) | 82.4 (80.1 to 84.7) | 86.3 (83.9 to 88.7) | 99.4 (96.2 to 102.6) | <0.001 |
Means adjusted in separate general linear models containing dietary energy and respondent's age and gender as covariates.
↵* Nutrient density based on vitamins A, C, E, calcium, magnesium, potassium and fibre.
RAE, retinol activity equivalents.