Statistical analysis
The sample size calculation was based on the estimated difference in salt reduction between the two groups after 12 weeks. Assuming a salt reduction of 1 g/day and a standard deviation of 3.8 g/day (Descriptive statistics were reported as numbers and percentages for categorical variables and as mean and standard deviation for continuous variables, or median and interquartile ranges if the variable’s distribution was skewed. Between-group differences at baseline were assessed using appropriate tests such as the independent sample t-test, Mann–Whitney U test, or chi-squared test.The effect of the intervention on changes in BP, 24-h urinary excretion of Na