Fig. 2
From: Urinary sodium/potassium ratio as a screening tool for hyperaldosteronism in men with hypertension
ROC curve analysis of the association of the SMU Na/K with a high PAC (≥90th percentile) stratified by sex (108 men and 52 women).The SMU Na/K was significantly associated with a high PAC in all models for men but only in the model including age and the serum K level (dashed line) in women. ROC curve receiver operating characteristic curve, SMU Na/K second morning urine sodium/potassium ratio, K potassium, PAC plasma aldosterone concentration, AUC area under the ROC curve, CI confidence interval
