Cross-sectional relation between GPx3 activity and characteristics at baseline: the Minnesota Heart Survey.*

*The values are the means±SD, unless otherwise indicated.†Shown are the year-specific quartiles of GPx3 activity, based on the distribution in controls. Ranges of GPx3 activity in U/ml for increasing quartiles were 0.09–0.23, 0.24–0.30, 0.31–0.42, and 0.43–0.76 in 1990–1992, and 0.17–0.35, 0.36–0.47, 0.48–0.56, and 0.57–1.03 in 1995–1997.‡Based on modeling quartiles of GPx3 activity as a continuous variable.§Defined as a blood pressure of ≥140/90 mm Hg or the use of antihypertensive medication.∥Defined as a serum total cholesterol >200 mg/dl.