Longitudinal association between regular supplement intake and HbA1c (1994/95–2004/05); results from generalized estimating equations (GEE).

CI = confidence interval, HbA1c = hemoglobin A1c; ßt = average change in HbA1c between baseline (1994/95) and follow-up (2004/05) in the reference group “no intake”, ß0 = difference in HbA1c at baseline compared with the reference group “no intake”, ßx = difference in change in HbA1c compared with the reference group “no intake”; significant associations after Bonferroni correction are presented in bold font*adjusted for: sex, age, BMI, waist–hip ratio, physical activity, smoking, alcohol intake, healthy diet, total/HDL cholesterol, hypertension, diabetes of the father, diabetes of the mother, intake of HbA1c increasing medication; as building tertiles with nearly similar numbers of people was not possible for zinc intake, results for zinc intake are not presented.Longitudinal association between regular supplement intake and HbA1c (1994/95–2004/05); results from generalized estimating equations (GEE).