Comparison in European descent subjects and African descent subjects of aldosterone/renin ratio under 3 conditions: restricted salt diet (A), liberal salt diet (B), and restricted salt diet after 60–90 minutes of upright posture (C). The multivariate regression models were adjusted for age, sex, BMI, site, disease state, serum cortisol, and 24-hour urine potassium. Data are represented in a dot plot with the mean ± SEM. The subjects were from the restricted HyperPATH subcohort (ARR, aldosterone/renin ratio).