Table 2.

Independent demographic, lifestyle, and dietary determinants of toenail selenium levels^a

^aMultivariable-adjusted findings including each of the variables in the Table. Independent dietary predictors were identified using stepwise regression (see Methods).

^bMetabolic equivalents (METs) per week were calculated in men, whereas the average recreational physical activity levels were assessed qualitatively in women.

^cWest: AZ, CA, CO, ID, MT, NM, NV, OR, UT, WA, WY HI

Midwest/north: IA, KS, MI, ND, NE, SD, WI MN

South: AL, FL, LA, MS, TN, TX, AR, GA, OK

Midwest/south IL, IN, KY, MO, VA, SC, NC, OH, WV

Northeast and other : DE, MD, NJ, DC, AK, CT, GU, MA, ME, MI, NH, NY, PA, PR, PI, VI, VT