Feasibility of Screening Primary Aldosteronism by Aldosterone-to-Direct Renin Concentration Ratio Derived from Chemiluminescent Immunoassay Measurement: Diagnostic Accuracy and Cutoff Value

Table 1

Baseline characteristics of included hypertensive patients.

Variable	All patients (n=450)
Age (years)
Sex (M/F)
BMI (kg/m^2)
SBP (mmHg)
DBP (mmHg)
HR (beat/minute)
Serum K^+(mmol/L)
Serum Na^+(mmol/L)
Urinary K^+(mmol/24h)
Urinary Na^+(mmol/24h)
Serum creatinine (μmol/L)

PH: primary hypertension; PA: primary aldosteronism; BMI: body mass index; SBP: systolic blood pressure; DBP: diastolic blood pressure; HR: heart rate; K⁺: potassium; Na⁺: sodium. Age, BMI, SBP, DBP, HR, serum K⁺/Na⁺, urinary K⁺/Na⁺, and serum creatinine are expressed as mean ± standard deviation.