. Author manuscript; available in PMC: 2010 Sep 1.

Published in final edited form as: Food Chem Toxicol. 2009 Jun 6;47(9):2183–2188. doi: 10.1016/j.fct.2009.06.003

Table 1.

Test groups in Study 1: Interaction of mineral supplements with the toxicity of CC (a) Test groups of a regular design and (b) Test groups of a nonregular design.

Table (a): 1/16^th fraction of a 2⁸ design (Regular Design)
1. + Cd + Ca, P, Mg, Cu	2. + Cd + Ca, P, Fe, Zn
3. + Cd + Ca, P, Se, Mn	4. + Cd + Ca, Mg, Fe, Se
5. + Cd + Ca, Mg, Zn, Mn	6. + Cd + Ca, Fe, Cu, Mn
7. + Cd + Ca, Cu, Zn, Se	8. + Cd + all minerals at a high level
9. + Cd + Mn, Se, Zn, Fe	10. + Cd + Mn, Mg, Se, Cu
11. + Cd + Mg, Cu, Zn, Fe	12. + Cd + P, Mn, Cu, Zn
13. + Cd + P, Se, Cu, Fe	14. + Cd + P, Mg, Se, Zn
15. + Cd + P, Mn, Mg, Cu	16. + Cd + all minerals at a low level

Table (b): 12-run Plackett-Burman design (Nonregular Design)
1. + Cd + Mn, Zn, Fe	2. + Cd + P, Cu, Zn, Fe
3. + Cd + Ca, Se, Cu, Zn	4. + Cd + Mg, Se, Cu, Fe
5. + Cd + Mn, Mg, Se, Zn	6. + Cd + P, Mn, Mg, Cu
7. + Cd + Ca, P, Mn, Se, Fe	8. + Cd + Ca, P, Mg, Zn
9. + Cd + Ca, Mn, Cu	10.+ Cd + P, Se
11.+ Cd + Ca, Mg, Fe	12.+ Cd + all minerals at a high level