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Table 2 Daily salt intake (as NaCl) during intervention.

From: Feasibility and antihypertensive effect of replacing regular salt with mineral salt -rich in magnesium and potassium- in subjects with mildly elevated blood pressure

  Smart Salt®
(n = 22)
Mean (SD)
Regular salt
(n = 23)
Mean (SD)
p-value
Daily NaCl intake during intervention (calculated from product diaries) (grams) 5.3 (1.6) 8.5 (2.0) p < 0.0011
Daily NaCl intake calculated from dU-Na (grams)    
Visit 3 (-1 day) 8.8 (3.2) 10.2 (2.9) NS2
Visit 6 (+8 weeks) 6.8 (3.3) 10.1 (3.1) p < 0.0022
p-value 3 p = 0.012 NS  
Changes in daily NaCl intake during intervention calculated from dU-Na    
grams -2.0 (3.6) -0.1 (2.8) NS (p = 0.050)4
% -18.5 (28.8) 3.1 (34.7) p = 0.0331
Changes in daily NaCl intake during intervention calculated from baseline dU-Na and NaCl intake calculated from diaries    
grams -3.5 (2.9) -1.7 (3.7) NS1
% -35.1 (21.6) -7.8 (40.0) p = 0.0071
  1. 1 Indicates the significance of difference between the groups analyzed with Mann-Whitney test.
  2. 2 Indicates the significance of difference between the groups analyzed with Mann-Whitney test with Bonferroni corrections.
  3. 3 Indicates the significance of difference within the group analyzed with Wilcoxon test with Bonferroni corrections.
  4. 4 Indicates the significance of difference between the groups analyzed with independent samples t-test.
  5. P-values < 0.05 are considered as statistically significant.
  6. NS = non-significant