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Figure 1 Mean ABI According to Quartile of Serum Free Testosterone and Free Estradiol Levels
Mean ankle-brachial index (ABI) (±SE) according to quartile (Q) of serum free testosterone (A) and free estradiol (B) levels. Limits in free testosterone for different quartiles were as follows: Q1 0.003 to 0.23, Q2 0.23 to 0.30, Q3 0.30 to 0.39, and Q4 0.39 to 1.43 nmol/l. Limits for free estradiol were Q1 0.05 to 1.20, Q2 1.20 to 1.60, Q3 1.60 to 2.12, and Q4 2.12 to 9.04 pmol/l. (C) Mean ABI (±SE) adjusted for free estradiol according to quartile of serum free testosterone levels. (D) Mean ABI (±SE) adjusted for free testosterone according to quartile of serum free estradiol levels. Statistical analyses were performed by analysis of variance followed by Tukey's post hoc test. *p < 0.05 versus Q2, Q3, and Q4; #p < 0.05 versus Q1 and Q2.
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