Table 4. Nutrient intakes of different food group according to quintiles of dietary iron intake for women: NIPPON DATA80.
| Iron intake quintiles (mg/1000 kcal) | ||||||||||||
| Range | 3.2–5.9 | 6.0–6.5 | 6.6–7.1 | 7.2–8.0 | 8.1–15.5 | P diff | P trend | |||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | |||
| n | 1174 | 1146 | 1117 | 1262 | 1138 | |||||||
| Cereals (g/1000 kcal) | 168.1 | 27.9 | 158.4 | 27.7 | 154.9 | 27.5 | 149.2 | 28.6 | 141.9 | 30.3 | <0.001 | <0.001 |
| Rice (g/1000 kcal) | 119.4 | 34.1 | 110.3 | 31.2 | 109.0 | 32.1 | 105.5 | 31.7 | 101.6 | 32.5 | <0.001 | <0.001 |
| Flour product (g/1000 kcal) | 46.4 | 29.0 | 46.5 | 29.7 | 44.5 | 28.1 | 42.6 | 28.1 | 39.1 | 29.4 | <0.001 | <0.001 |
| Nuts (g/1000 kcal) | 0.7 | 2.7 | 0.7 | 2.3 | 0.9 | 2.9 | 0.8 | 2.1 | 1.1 | 2.7 | 0.001 | 0.221 |
| Potatoes (g/1000 kcal) | 27.3 | 19.2 | 31.7 | 21.2 | 32.9 | 21.3 | 36.4 | 24.0 | 39.2 | 28.8 | <0.001 | <0.001 |
| Sugar & sweetener (g/1000 kcal) | 6.4 | 4.5 | 7.0 | 4.8 | 7.0 | 5.0 | 6.9 | 4.7 | 6.7 | 4.9 | 0.010 | 0.008 |
| Sweet & snacks (g/1000 kcal) | 12.2 | 13.2 | 13.3 | 12.9 | 13.9 | 13.5 | 14.2 | 14.4 | 13.0 | 14.3 | 0.003 | <0.001 |
| Fats & Oils (g/1000 kcal) | 8.9 | 5.3 | 8.8 | 4.9 | 8.0 | 4.4 | 7.6 | 4.5 | 6.6 | 4.3 | <0.001 | <0.001 |
| Soy beans and product (g/1000 kcal) | 24.2 | 15.3 | 31.6 | 16.8 | 35.6 | 18.6 | 43.1 | 22.0 | 52.2 | 27.4 | <0.001 | <0.001 |
| Fruit (g/1000 kcal) | 79.3 | 53.3 | 89.1 | 52.5 | 95.9 | 56.3 | 101.4 | 59.4 | 114.7 | 72.4 | <0.001 | <0.001 |
| Green & yellow vegetable (g/1000 kcal) | 20.5 | 13.1 | 25.4 | 15.1 | 29.1 | 17.7 | 34.3 | 20.7 | 44.0 | 28.9 | <0.001 | <0.001 |
| Other vegetable (g/1000 kcal) | 86.9 | 32.3 | 99.5 | 34.4 | 108.1 | 37.0 | 117.2 | 43.2 | 135.9 | 55.1 | <0.001 | <0.001 |
| Mushrooms (g/1000 kcal) | 3.4 | 4.6 | 4.1 | 5.3 | 4.6 | 5.9 | 5.1 | 6.4 | 6.2 | 7.5 | <0.001 | <0.001 |
| Sea algae (g/1000 kcal) | 1.4 | 1.5 | 2.0 | 2.0 | 2.7 | 2.9 | 3.7 | 3.7 | 6.1 | 6.9 | <0.001 | <0.001 |
| Condiment & beverage (g/1000 kcal) | 34.9 | 51.0 | 33.5 | 31.0 | 33.7 | 28.8 | 35.2 | 32.3 | 38.4 | 52.3 | 0.025 | 0.809 |
| Fish & shellfish (g/1000 kcal) | 39.7 | 19.2 | 44.9 | 20.5 | 48.9 | 21.0 | 53.7 | 24.3 | 64.4 | 29.1 | <0.001 | <0.001 |
| Meat (g/1000 kcal) | 28.4 | 15.0 | 28.9 | 15.2 | 28.4 | 14.6 | 27.4 | 15.1 | 26.5 | 19.3 | 0.002 | 0.100 |
| Egg (g/1000 kcal) | 16.1 | 9.1 | 17.6 | 8.6 | 18.3 | 9.5 | 19.3 | 10.2 | 20.6 | 13.1 | <0.001 | <0.001 |
| Milk & dairy (g/1000 kcal) | 48.4 | 38.0 | 49.0 | 33.6 | 49.2 | 36.7 | 46.2 | 35.6 | 44.3 | 39.8 | 0.005 | 0.176 |
| Other food (g/1000 kcal) | 2.5 | 6.0 | 3.1 | 6.4 | 3.3 | 6.5 | 3.4 | 7.2 | 3.5 | 8.7 | 0.003 | 0.001 |
P diff values obtained by ANOVA statistics. P trend obtained by contrast statement of analysis of variance.