Table 2. Prevalence of most commonly used vitamin/mineral supplements. Author, year N Multi-vit and mineral Multi-vit (%) Multi- mineral (%) Vit C (%) Iron (%) Ca Vit A B Vits Vit E Sobal and Marquart, 1994b 742 - 19 - 25 11 9 9 8 8 Kim and Keen, 1999* 1,355 3.1 27 - 41.2 9.5 10.7 4 2.8 1.2 O'Dea, 2003 78 47.8 - - - - - - - - Ziegler et al., 2003 105 61(M), 83 (F) 33 (M), 42 (F) 8 (M), 21 (F) - - - - - - Bell et al., 2004 333 42.5 - - - - - - - - Nieper, 2005 32 - 45 - 35 30 - - - - Scofield and Unruh, 2006 139 19.4 - - - - - - - -