Table 2.
Vitamins, Minerals, Herbs, or Other Dietary Supplements Used for Cognitive Health, United States, 2007 a
| n b | N b | % b | 95% Confidence Interval for % | ||
|---|---|---|---|---|---|
| LB b | UB b | ||||
| Herbal and other dietary supplements | |||||
| 1. Fish oil | 106 | 1 020 186 | 29.0 | 25.2 | 32.8 |
| 2. Ginkgo biloba | 89 | 813 280 | 23.1 | 19.5 | 26.8 |
| 3. Ginseng | 65 | 671 394 | 19.1 | 14.3 | 23.9 |
| 4. Combination herbal pill | 62 | 567 447 | 16.1 | 12.6 | 19.7 |
| 5. Flax seed oil | 49 | 441 858 | 12.6 | 10.2 | 14.9 |
| Vitamins | |||||
| 1. Multivitamin | 731 | 6 988 585 | 58.1 | 54.9 | 61.2 |
| 2. Calcium | 208 | 1 967 125 | 16.3 | 14.3 | 18.4 |
| 4. Vitamin C | 116 | 1 013 531 | 8.4 | 6.8 | 10.0 |
| 3. Vitamin B | 79 | 761 321 | 6.3 | 4.9 | 7.7 |
| 5. Vitamin B12 | 68 | 668 890 | 5.6 | 4.1 | 7.0 |
| 6. Vitamin E | 76 | 634 473 | 5.3 | 4.2 | 6.4 |
a Data Source: 2007 National Health Interview Survey. 42
b n, unweighted sample size; N, weighted sample size estimating the number of Americans represented; N, %, and confidence interval and are weighted for national representativeness and account for the survey design; % is percentage among those using CAM for cognition or memory; LB, lower bound of the 95% confidence interval for the percentage estimate; UB, upper bound.