Table 2

Daily salt intake (as NaCl) during intervention.

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-value3

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 Indicates the significance of difference between the groups analyzed with Mann-Whitney test.

2 Indicates the significance of difference between the groups analyzed with Mann-Whitney test with Bonferroni corrections.

3 Indicates the significance of difference within the group analyzed with Wilcoxon test with Bonferroni corrections.

4 Indicates the significance of difference between the groups analyzed with independent samples t-test.

P-values < 0.05 are considered as statistically significant.

NS = non-significant

Sarkkinen et al. Nutrition Journal 2011 10:88   doi:10.1186/1475-2891-10-88

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