A Pilot Randomized Controlled Trial to Reduce Salt Intake Among Hypertensive Young Adults in Hong Kong

Study Overview
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Brief Summary
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A pilot randomized controlled trial will be conducted to investigate the feasibility and effectiveness of a salt intake reduction intervention to young hypertension patients in Hong Kong who had high salt intake.

Detailed Description
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Convenience sample will be recruited from the community in Hong Kong through different channels of promotion.

Official Title
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A Pilot Randomized Controlled Trial to Reduce Salt Intake Among Hypertensive Young Adults in Hong Kong

Conditions
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Hypertension

Intervention / Treatment
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* Behavioral: Four-week weekly intervention to reduce salt intake
* Other: Usual government pamphlets


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: i) adults aged 18 to 44 ii) diagnosed hypertension or borderline hypertension iii) complete collection of 24-hour urine at baseline iv) 24-hour urinary sodium excretion above 2000mg at baseline v) can communicate in Cantonese Exclusion Criteria: i) renal illnesses; ii) taking diuretics; iii) taking RAS blockers; iv) attending or planning to attend new hypertension education programme or salt intake reduction programme during the study period.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 44 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Intervention group<br>Four-week weekly intervention to reduce salt intake. | Behavioral: Four-week weekly intervention to reduce salt intake<br>* The intervention group will receive a four-week weekly intervention, about 15 minutes each. Two sessions will be face-to-face and two sessions will be on the phone. The participants will be informed of their 24-hour urinary sodium excretion at each measurement time once available.<br>|
| Other: Control group<br>Usual government pamphlets. | Other: Usual government pamphlets<br>* The control group will receive usual government pamphlets when they know their 24-hour urinary sodium excretion at baseline. However, they will not be informed of their follow-up urinary sodium excretion results immediately.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 24-hour urinary sodium excretion | Difference between the intervention and control group in the change in 24-hour urinary sodium excretion from baseline to the end of follow-up | 10-Week | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Health literacy on low salt intake | Difference between the intervention and control group in the change in health literacy on low salt intake measured with the validated Chinese Health Literacy Scale for Low Salt Consumption (CHLSalt-HK) | 10-Week | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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dietary salt, 24 hour urinary sodium excretion, blood pressure, hypertension