The effect of varying levels of dietary chromium supplement use on the odds of having diabetes as defined by both HbA1c values and physician diagnosis. Associations between categorical variables for analyses with the use of the full population (analyses 1A, 1B, 1C, and 1D; n = 28,539) are in comparison with persons who consumed no dietary supplement of any kind. Associations between categorical variables for analyses with the use of the subpopulation (analyses 2A and 2B; n = 15,103) of people who consumed at least one dietary supplement of any kind are in comparison with people who consumed dietary supplements containing no chromium. M1 and M2 are in reference to T2D-M1 and T2D-M2, respectively. HbA1c, glycated hemoglobin; T2D-M1, type 2 diabetes defined on the basis of HbA1c values only; T2D-M2, type 2 diabetes defined by both HbA1c values and doctor diagnosis.