Cluster randomised controlled trial of home cook intervention to reduce salt intake in China: a protocol study
Open Access
- 7 May 2020
- Vol. 10 (5), e033842
- https://doi.org/10.1136/bmjopen-2019-033842
Abstract
Introduction Salt intake in China is twice the upper limit recommended by the WHO, and nearly 80% of salt is added during cooking. This study will develop a package of salt reduction interventions targeting home cooks and evaluate its effectiveness and feasibility for scale-up. Methods and analysis A cluster randomised controlled trial design is adopted in this study, which will be conducted in six provinces covering northern, central and southern China. For each province, 10 communities/villages (clusters) with 13 families (one cook and one adult family member) will be selected in each cluster for evaluation. In total, 780 home cooks and 780 adult family members will be recruited. The home cooks in the intervention group will be provided with the intervention package, including community-based standardised offline and online health education and salt intake monitoring. The duration of the intervention will be 1 year. The primary outcome is the difference between the intervention and control group in change in salt intake as measured by 24 hours urinary sodium from baseline to the end of the trial. The secondary outcome is the difference between the two groups in the change in salt-related knowledge, attitude and practice and blood pressure (BP). Ethics and dissemination The study has been approved by The Queen Mary Research Ethics Committee (QMERC2018/13) and Institutional Review Board of the Chinese Center for Disease Control and Prevention (No. 201801). The study findings will be disseminated widely through conference presentations and peer-reviewed publications and the general media. Trial registration number ChiCTR1800016804.Keywords
Funding Information
- the National Institute of Health Research (Official Development Assistance funding(16/136/77))
This publication has 21 references indexed in Scilit:
- Understanding the patterns and trends of sodium intake, potassium intake, and sodium to potassium ratio and their effect on hypertension in ChinaThe American Journal of Clinical Nutrition, 2014
- Global, regional and national sodium intakes in 1990 and 2010: a systematic analysis of 24 h urinary sodium excretion and dietary surveys worldwideBMJ Open, 2013
- Salt-Restriction-Spoon Improved the Salt Intake among Residents in ChinaPLOS ONE, 2013
- A school-based education programme to reduce salt intake in children and their families (School-EduSalt): protocol of a cluster randomised controlled trialBMJ Open, 2013
- Effect of longer term modest salt reduction on blood pressure: Cochrane systematic review and meta-analysis of randomised trialsBMJ, 2013
- National Approaches to Monitoring Population Salt Intake: A Trade-Off between Accuracy and Practicality?PLOS ONE, 2012
- Dietary Sources of Sodium in China, Japan, the United Kingdom, and the United States, Women and Men Aged 40 to 59 Years: The INTERMAP StudyJournal of the American Dietetic Association, 2010
- Projected Effect of Dietary Salt Reductions on Future Cardiovascular DiseaseNew England Journal of Medicine, 2010
- Salt intakes around the world: implications for public healthInternational Journal of Epidemiology, 2009
- Chronic disease prevention: health effects and financial costs of strategies to reduce salt intake and control tobacco useThe Lancet, 2007