Assessment of Baseline Salt Intake from 24-hour Urine Sodium Excretion
Dietary salt intake was assessed by measuring 24-hour urine sodium excretion from 24-hour urine collections. The mean first baseline urinary sodium excretion for all participants across the control and intervention groups was 130.2 (±59.7) mmol/24 hours, representing a mean salt intake of 7.6 (±3.5) g/d. Following consent, all participants continued with 1 month of normal routine care and were then randomized to either 1 month of the intervention or a further 1 month of continued normal routine care. Immediately before randomization, a second baseline measurement of sodium excretion was made. Neither the first (