Table 3

Systolic and diastolic blood pressure during the intervention period.

Smart Salt®

(n = 22)

Regular salt (n = 23)

p-value

p-value


Systolic blood pressure (mmHg)

p < 0.0011

Visit 3 (0 week)

140 (13)

134 (9)

NS3

Visit 4 (+3 weeks)

133 (8)a

140 (9)

p = 0.0283

Visit 5 (+6 weeks)

132 (10)b

139 (10)

NS3

Visit 6 (+8 weeks)

132 (7)c

138 (9)

NS (p = 0.076)3

p-value1 (p < 0.001)

p-value2

p = 0.016

NS (p = 0.072)

Diastolic blood pressure (mmHg)

p = 0.0071

Visit 3 (0 week)

89 (8)

88 (7)

NS3

Visit 4 (+3 weeks)

86 (6)

90 (6)

NS3

Visit 5 (+6 weeks)

86 (6)

91 (8)

NS3

Visit 6 (+8 weeks)

86 (7)

90 (7)

NS3

p-value1 (p = 0.007)

p-value2

NS (p = 0.094)

NS


1 Indicates the significance of the time*group interaction analyzed with the GLM for repeated measures.

2 Indicates the significance of difference within the groups analyzed with the GLM for repeated measures with Bonferroni corrections.

3 Indicates the significance of difference between the groups analyzed with the independent samples t-test with Bonferroni corrections.

Letters indicate significance of within-group difference compared to baseline (0 wk) analyzed with paired t-test with Bonferroni corrections.

a p = 0.081

b p = 0.024

c p = 0.006

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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