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Figure 1.

Figure 1. From: Serum Selenium and Peripheral Arterial Disease: Results From the National Health and Nutrition Examination Survey, 2003-2004.

Odds ratios for peripheral arterial disease by serum selenium levels, National Health and Nutrition Examination Survey, 2003–2004. Curves represent adjusted odds ratios (solid line) and their 95% confidence intervals (dashed lines) based on restricted quadratic splines for serum selenium levels with knots at the 5th, 50th, and 95th percentiles. The reference value (odds ratio = 1) was set at the 10th percentile of serum selenium distribution (116 ng/mL). Odd ratios were adjusted for age, sex, race-ethnicity, education, family income, postmenopausal status, smoking, serum cotinine, alcohol consumption, body mass index, dietary supplement use, C-reactive protein, total cholesterol, high density lipoprotein cholesterol, cholesterol-lowering medication use, systolic blood pressure, blood-pressure-lowering medication use, diabetes, and glomerular filtration rate. Bars represent the weighted histogram of serum selenium distribution.

Joachim Bleys, et al. Am J Epidemiol. 2009 April 15;169(8):996-1003.

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