Fig. 2: Leptin concentration in plasma.

A Plasma leptin in anorexia nervosa (AN), recovered anorexia nervosa (ANREC), and healthy controls (CTRL). The median is shown as a straight line and the box denotes the interquartile range. B Correlations between plasma leptin and BMI in AN (0.28, p = 0.021, 95% CI [0.037, 0.49]), AN-REC (0.59, p = 1.94e–09, 95% CI [0.43, 0.71]), CTRL (0.55, p = 5.54e–07, 95% CI [0.36, 0.70]), and all groups combined (0.81, p 2.20e–16, 95% CI [0.75, 0.85]). C Correlations between plasma GDF15 and leptin in AN (−0.053, p = 0.67, 95% CI [−0.30, 0.20]), AN-REC (0.24, p = 0.028, 95% CI [0.020, 0.43]), CTRL (−0.16, p = 0.18, 95% CI [−0.39, 0.08]), and all groups combined (−0.013, p = 0.85, 95% CI [−0.15, 0.12]). The colored lines correspond to the correlation for all groups, and for the AN, AN-REC, and CTRL groups separately. The shaded area around each linear fit line represents a 95% confidence interval.