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. 2005 Sep 7;114(2):270–276. doi: 10.1289/ehp.8075

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Regression plots of mEP levels (μg/L) in human breast milk and serum hormonal levels in boys 3 months of age (n = 96). The x- and y-axes for mEP, free testosterone, SHBG, and LH:free testosterone ratio are logarithmic. The slopes (confidence interval) of the regression lines are (A) free testosterone, 0.86 (0.69–1.06); (B) LH:free testosterone ratio, 1.26 (0.99–1.60); and (C) SHBG 1.15 (1.03–1.28). Example of interpretation: A 10-fold increase in mEP, for example, from 1 to 10 μg/L, is associated with a 15% increase in SHBG from 140.5 to 161.3 nmol/L.