Table 3. Nutrient intakes of different food group according to quintiles of dietary iron intake for men: NIPPON DATA80.
| Iron intake quintiles (mg/1000 kcal) | ||||||||||||
| Range | 3.0–5.3 | 5.4–5.9 | 6.0–6.4 | 6.5–7.1 | 7.2–14.3 | P diff | P trend | |||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | |||
| n | 905 | 1013 | 833 | 902 | 932 | |||||||
| Cereals (g/1000 kcal) | 174.9 | 29.2 | 164.0 | 28.0 | 160.3 | 28.5 | 154.6 | 29.2 | 146.9 | 30.9 | <0.001 | <0.001 |
| Rice (g/1000 kcal) | 140.0 | 36.4 | 129.9 | 31.9 | 126.5 | 32.9 | 120.8 | 32.6 | 114.7 | 34.0 | <0.001 | <0.001 |
| Flour product (g/1000 kcal) | 38.3 | 27.0 | 37.2 | 24.6 | 36.8 | 24.0 | 35.8 | 24.2 | 34.0 | 25.7 | 0.004 | 0.043 |
| Nuts (g/1000 kcal) | 0.4 | 1.5 | 0.5 | 1.7 | 0.6 | 1.9 | 0.6 | 1.7 | 0.7 | 1.8 | 0.009 | 0.009 |
| Potatoes (g/1000 kcal) | 21.6 | 17.6 | 26.4 | 17.4 | 28.1 | 18.1 | 30.2 | 19.9 | 32.2 | 21.4 | <0.001 | <0.001 |
| Sugar & sweetener (g/1000 kcal) | 5.0 | 3.6 | 5.8 | 4.3 | 5.7 | 4.0 | 5.9 | 4.1 | 6.0 | 4.4 | <0.001 | <0.001 |
| Sweet & snacks (g/1000 kcal) | 5.0 | 6.2 | 6.3 | 6.9 | 6.6 | 7.3 | 6.5 | 6.9 | 7.2 | 8.3 | <0.001 | <0.001 |
| Fats & Oils (g/1000 kcal) | 8.1 | 5.0 | 7.6 | 4.4 | 7.1 | 4.1 | 6.8 | 4.0 | 5.8 | 3.8 | <0.001 | <0.001 |
| Soy beans and product (g/1000 kcal) | 21.8 | 14.4 | 29.9 | 15.7 | 34.2 | 17.8 | 39.5 | 20.1 | 48.3 | 25.8 | <0.001 | <0.001 |
| Fruit (g/1000 kcal) | 46.6 | 36.0 | 53.6 | 33.1 | 61.0 | 37.7 | 64.0 | 40.1 | 70.5 | 46.8 | <0.001 | <0.001 |
| Green & yellow vegetable (g/1000 kcal) | 15.9 | 10.2 | 20.4 | 12.1 | 23.1 | 14.2 | 26.8 | 16.2 | 32.9 | 22.1 | <0.001 | <0.001 |
| Other vegetable (g/1000 kcal) | 76.8 | 27.1 | 87.4 | 30.5 | 96.0 | 32.7 | 103.5 | 37.1 | 120.0 | 50.2 | <0.001 | <0.001 |
| Mushrooms (g/1000 kcal) | 3.2 | 4.2 | 3.7 | 5.0 | 4.2 | 5.3 | 4.5 | 5.8 | 5.4 | 6.6 | <0.001 | <0.001 |
| Sea algae (g/1000 kcal) | 1.3 | 1.2 | 1.8 | 1.8 | 2.4 | 2.4 | 3.0 | 3.1 | 5.0 | 5.6 | <0.001 | <0.001 |
| Condiment & beverage (g/1000 kcal) | 81.9 | 94.9 | 78.0 | 65.5 | 80.6 | 64.5 | 83.2 | 74.1 | 87.9 | 73.8 | 0.059 | 0.566 |
| Fish & shellfish (g/1000 kcal) | 41.1 | 19.9 | 47.1 | 21.5 | 51.4 | 22.2 | 56.3 | 24.8 | 65.8 | 30.5 | <0.001 | <0.001 |
| Meat (g/1000 kcal) | 31.1 | 16.3 | 30.4 | 15.4 | 29.4 | 15.6 | 28.6 | 15.3 | 27.9 | 19.4 | <0.001 | 0.001 |
| Egg (g/1000 kcal) | 14.7 | 8.7 | 16.4 | 7.9 | 17.4 | 8.8 | 18.0 | 9.6 | 19.4 | 12.0 | <0.001 | <0.001 |
| Milk & dairy (g/1000 kcal) | 28.8 | 25.5 | 30.6 | 22.6 | 31.2 | 25.3 | 31.8 | 24.9 | 29.3 | 26.8 | 0.065 | 0.012 |
| Other food (g/1000 kcal) | 2.4 | 6.0 | 2.6 | 4.9 | 2.9 | 6.0 | 3.0 | 6.4 | 3.1 | 10.3 | 0.169 | 0.058 |
P diff values obtained by ANOVA statistics. P trend obtained by contrast statement of analysis of variance.