Table 4.
Vitamin intake (DRI) by gender and age (Mean, SD for USDA age groups)
| Nutrient | RDA | Gender | 13 yrs (N = 15) | 14–18 yrs (N = 30) | 19–21 yrs (N = 11) |
|---|---|---|---|---|---|
| Vitamin A (RE [mcg]) | 13 (600); 14–21 (900) | M | 918 ± 684 | 1267 ± 717 | 1088 ± 483 |
| 13 (600); 14–21 (700) | F | 763 ±457 | 1255 ±940 | 1502 ±1199 | |
| Vitamin C (mg) | 13 (45); 14–18 (75); 19–21 (90) | M | 101 ± 56 | 145 ± 68 | 282 ± 226 |
| 13 (45); 14–18 (65); 19–21 (75) | F | 98 ± 48 | 149 ± 107 | 176 ±141 | |
| Vitamin D (mcg) | All ages (15) | M | 5.8 ± 2.2 | 8.7 ± 4.3 | 7.5 ± 2.3 |
| All ages (15 | F | 4.5 ± 4.2 | 5.7 ± 5 | 3.8 ± 2.1 | |
| Vitamin E | 13 (11); 14–21 (15) | M | 7.7 ± 5.8 | 15 ± 15 | 10 ± 3 |
| 13 (11); 14–21 (15) | F | 8.5 ± 7.3 | 11 ± 12 | 8.8 ± 6 | |
| Vitamin B1/Thiamin (mg) | 13 (0.9); 14–21 (1.2) | M | 1.1 ± 0.7 | 1.7 ± 0.6 | 2.5 ± 1.3 |
| 13 (0.9); 14–18 (1.0); 19–21 (1.1) | F | 1.1 ± 0.6 | 1.3 ± 0.7 | 2.1 ± 1.9 | |
| Vitamin B6 (mg) | 13 (1.0); 14–21 (1.3) | M | 1.2 ± 0.7 | 1.9 ± 0.7 | 2.5 ± 0.8 |
| 13 (1.0); 14–18 (1.2); 19–21 (1.3) | F | 1.3 ± 0.8 | 1.6 ± 1.1 | 1.9 ± 1.3 | |
| Vitamin B12 (mcg) | 13 (1.8); 14–21 (2.4) | M | 3.7 ± 2.7 | 5.7 ± 4.0 | 6.4 ± 3.5 |
| 13 (1.8); 14–21 (2.4) | F | 3.0 ± 1.8 | 3.3 ± 3.5 | 4.4 ± 3.4 | |
| Vitamin B2/Riboflavin (mg) | 13 (0.9); 14–21 (1.3) | M | 1.5 ± 0.6 | 2.2 ± 0.8 | 2.9 ± 1.2 |
| 13 (0.9); 14–18 (1.0); 19–21 (1.1) | F | 1.5 ± 0.7 | 1.7 ± 0.8 | 2.4 ± 2.2 |
M = male; F = female. RDA = level of nutrient likely to meet the needs of 97.5% of the population (source: National Research Council, IOM).