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Figure 1 Insulin sensitivity in patients with chronic heart failure according to New York Heart Association (NYHA) functional class, as compared with healthy control subjects. Box plot displaying the 10th, 25th, 50th, 75th, and 90th percentiles. The p values for the Fisher post-hoc test of mean square-root transformed insulin sensitivity. *p < 0.05 and **p < 0.005 vs. controls.