Table 2: Absolute daily vitamin intake estimated from the food frequency questionnaires. (P > 0.05).
| Vitamin | Estimated RDA of each vitamin in mg for the hearing students based on intake of 13 listed foods | Estimated RDA of each vitamin in mg for hearing impaired students based on intake of 13 listed foods | Recommended daily allowance of each vitamin in mg |
| A | 1.3 | 2.1 | 0.7 |
| B1 | 1.2 | 1.8 | 0.8 |
| B2 | 1.2 | 2.0 | 1.1 |
| B3 | 17.9 | 28.4 | 14 |
| B5 | 5.1 | 8.1 | 5 |
| B6 | 1.4 | 2.6 | 1.2 |
| B9 | 0.3 | 0.5 | 0.4 |
| B12 | 6.3 | 10.1 | 0.0024 |
| C | 145 | 230 | 75 |
| D | 0.01 | 0.02 | 0.015 |
| E | 16.3 | 26.0 | 15 |
| K | 55.7 | 88.4 | 1 |