Key result
A self-monitoring urinary salt excretion measurement device significantly reduced the 24-hour urinary sodium/potassium ratio in young women over 4 weeks (P=0.045).
Why the study?
Dietary salt restriction starting in adolescence is important to prevent and treat hypertension, but an effective salt-reduction education system has not been established.
Does a self-monitoring urinary salt excretion measurement device reduce the 24-hour urinary sodium/potassium ratio in young women?
RCT (n=100)
parallel
Does a self-monitoring urinary salt excretion measurement device reduce the 24-hour urinary sodium/potassium ratio in young women?
Absolute Event Rate: 3.5% vs 4.2%
p-value: p=0.045
A self-monitoring urinary salt excretion measurement device effectively reduces dietary salt intake in young women, serving as a practical tool for hypertension prevention.
Self-monitoring device use improved urinary Na/K ratio in young women; leaves open whether it reduces salt intake or BP in clinical practice.
To prevent and treat hypertension, it is important to restrict salt in one's diet since adolescence. However, an effective salt-reduction education system has yet to be established. Besides accurate evaluation, we believe that the frequent usage of a measurement device may motivate individuals to avoid high salt intake. The present study evaluated the use of a urinary salt excretion measurement device for salt-reduction education in a parallel randomized trial of two groups. The sample comprised 100 university students who provided consent to participate. A survey with 24-hour home urine collection and blood pressure measurement was conducted. Participants in the self-monitoring group measured their own urinary salt excretion level for 4 weeks, using the self-measurement device. Analyses were conducted on 51 participants in the control group and 49 in the self-monitoring group. At baseline, there was no significant difference between the two groups in terms of their characteristics and 24-hour urinary salt excretion levels. After intervention, 24-hour urinary sodium/potassium ratio showed no change in the control group [baseline score: 4.1 ± 1.5; endline score: 4.2 ± 2.0; P = 0.723], but it decreased significantly in the self-monitoring group [baseline score: 4.0 ± 1.7; endline score: 3.5 ± 1.4; P = 0.044]. This change was significant even after adjusting for baseline and endline differences between groups using analysis of covariance (P = 0.045). The self-monitoring urinary salt excretion measurement device improved the 24-hour urinary sodium/potassium ratio. The device is a useful and practical tool for educating young individuals about dietary salt reduction.
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Yasutake et al. (2019) reported an RCT. Self-monitoring urinary salt excretion measurement device vs. Control group was evaluated on 24-hour urinary sodium/potassium ratio (p=0.045). A self-monitoring urinary salt excretion measurement device significantly reduced the 24-hour urinary sodium/potassium ratio in young women over 4 weeks (P=0.045).
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