2.5. Outcomes
The outcomes were calculated based on the difference between follow-up and baseline estimated 24-h sodium consumption, and systolic and diastolic BP (intervention delta minus control delta) assessed by ABPM. The 24-h sodium excretion was estimated from a spot of urine using a simple formula with high sensitivity to detect patients with sodium intake greater than 3600 mg/day [Men: Estimated 24-h urinary sodium excretion (g/day) = 0.96 + (weight in kg × 0.03) + (sodium in the urine specimen in g/L × 0.63).