- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00145756
China Salt Substitute Study
China Salt Substitute Study-A Randomised Trial to Determine the Long-Term Effects of a Low Sodium, High Potassium Salt Substitute on Blood Pressure Among High-Risk Individuals in Northern China
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This randomised trial will clearly identify whether a low-sodium, high-potassium salt-substitute is a feasible means of lowering blood pressure in high-risk individuals in rural China. The randomised design and the large size (n=600) will ensure that the results are reliable and precise. The 12-month duration will address the long-term practicability of the intervention strategy. The study is being conducted because salt-substitute-based blood pressure lowering may be particularly appropriate for rural populations in low- and middle-income countries. First, sodium intake is often very high. Second, the salt-substitute can be easily incorporated into the diet because most food is prepared and eaten at home. Third, the intervention can be provided at very low cost.
Comparisions: Low sodium high potassium salt (65% sodium chloride, 25% potassium chloride, 10% magnesium sulphate) compared to normal salt (100% sodium chloride).
Study Type
Enrollment
Phase
- Not Applicable
Contacts and Locations
Study Locations
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-
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Beijing, China, 101300
- The Health Center of Fengbo,ShunYi District
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Beijing, China, 102600
- The Health Center of YingHai, DaXing District
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Tianjin, China, 300000
- The First Affiliated Hospital of Medical College of China's people Armed Police Force
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Heilongjiang
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Mudanjiang, Heilongjiang, China, 157000
- The Institute for Medical Science of Mudangjiang
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Liaoning
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Shenyang, Liaoning, China, 110000
- The first affiliated hospital of China medical university
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Shanxi
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Yangquan, Shanxi, China, 045100
- The People's Hospital of YuXian
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
Participant inclusion will be based upon the presence of:
A doctor-confirmed high risk of future vascular disease defined as a history of any one of:
- Stroke or transient ischaemic attack
- Hospitalisation for management of any acute coronary syndrome
- Surgery or angioplasty for peripheral vascular disease
- Treated diabetes and age 55 years or older
- Systolic blood pressure >160mmHg
- Estimated daily sodium intake of 260mmol/24hrs (about 15g/24hrs of NaCl) or above and expectation that at least 50% of daily dietary salt intake can be replaced with the salt-substitute. This will be estimated through interview of the potential participant and the individual responsible for daily food preparation (if this is not the patient) using a structured questionnaire.
- Provision of informed consent
Exclusion Criteria:
Potential participants will be excluded if:
- they are on potassium-sparing medication
- there is an established history of significant renal impairment that would preclude the use of the salt-substitute in the opinion of the responsible physician.
- there is any reason why either the salt-substitute or normal salt are definitely indicated or definitely contra-indicated.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
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Clinical blood pressure
|
Secondary Outcome Measures
Outcome Measure |
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Spot urine sodium and potassium levels
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Food taste
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Preferred level of saltiness
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Bruce C Neal, PhD, The George Institute
- Principal Investigator: Yangfeng Wu, PhD, Fu Wai Cardiovascular Institute, Beijing, China
- Principal Investigator: Rachel Huxley, PhD, The George Institute
- Principal Investigator: John Prescott, PhD, James Cook University, Queensland, Australia
Study record dates
Study Major Dates
Study Start
Study Completion
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- CSSS
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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