Table 4. Supplements taken by the participants.
| Supplements | CR | Controls |
|---|---|---|
| None | 4 | 3 |
| Only multivitamin | 2 | 7 |
| Only vitamin E | 1 | 3 |
| Only vitamin C | 1 | 0 |
| Vitamin E + vitamin C | 2 | 0 |
| Vitamin E + multivitamin | 2 | 1 |
| Vitamin C + E + multivitamin | 2 | 1 |
| Folate | 1 | 0 |
| Vitamin C + E + folate + multivitamin | 1 | 0 |
| Vitamin C + E + β-carotene + multivitamin | 1 | 0 |
| Vitamin C + E + β-carotene + folate | 1 | 0 |
| Vitamin C + E + selenium | 1 | 0 |
| Vitamin C + E + selenium + folate | 0 | 2 |
Vitamin E range 200-800 international units (IU)/day; vitamin C range 100-2,650 mg/day; folic acid 400-1,600 μg/day; selenium 50-300 μg/day; vitamin A 5,000-50,000 IU/day.