 |
| |
| Author, year | N | Age (yrs) | Prevalence | 3 Most Common Supplements (%) |
|---|---|---|---|---|
| Sobal and Marquart, 1994 | 742 | High School students |
38% | Vitamin C (25) Mulivitamins (19) Iron (11) |
| Kim and Keen, 1999 | 1,355 | 16-19 | 35.8% | Vitamin C (41.2) Multivitamins (27) Calcium (10.7) |
| O'Dea, 2003 | 78 | 11-18 | n/a | Sports drinks (56.4) Vitamin/minerals (48.7) Energy drinks (42.3) |
| Ziegler et al., 2003 | 105 | 16 | 71% | Multivitamin/mineral (M-61, F 83) Herbals (M-44, F-48) Multivitamin only ( F-42) Protein bars (M-38) |
| Bell et al., 2004 | 333 | 13-19 | n/a | Multivitamin/minerals (42.5) Protein (13.5) Energizers (6) |
| Nieper, 2005 | 32 | 18 | 62% | Multivitamins (45) Vitamin C (35) Iron (30) |
| Scofield and Unruh, 2006 | 139 | 14-19 | 22.3% | Meal replacement protein (23.7) Vitamin-minerals (19.4) Creatine (16) |