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Cost-Effectiveness of Expanding Home Cook Interventions for Salt Reduction in China
Xuanjing Li1, Yipeng Lv1, Xiang Gao1
1School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
American Journal of Preventive Medicine
|December 3, 2025
Summary
Widely adopting home cook interventions in China can significantly reduce cardiovascular disease (CVD) events and deaths. These interventions are cost-effective, offering substantial public health benefits and healthcare savings.
Area of Science:
- Public Health
- Health Economics
- Cardiovascular Disease Prevention
Background:
- Excessive salt intake is a significant risk factor for cardiovascular disease (CVD) and mortality in China and globally.
- A prior trial showed home cook interventions effectively reduce salt intake and blood pressure in China.
- The cost-effectiveness of scaling these interventions nationwide remained undetermined.
Purpose of the Study:
- To evaluate the cost-effectiveness of expanding home cook interventions across China for CVD prevention.
- To estimate the potential impact on CVD events, mortality, and healthcare costs.
Main Methods:
- Utilized the China CVD Prevention Model, a microsimulation model for adults aged 35+.
- Estimated lifetime averted CVD events (coronary heart disease, stroke) and deaths.
- Calculated quality-adjusted life years (QALYs) gained and incremental cost-effectiveness ratios (ICERs), discounting at 3%.
Main Results:
- Projected to avert millions of coronary heart disease and stroke events and deaths in both women and men.
- Interventions yielded an ICER of Int$3552/QALY for women and Int$5445/QALY for men.
- These results were below the willingness-to-pay threshold of Int$21,318, indicating cost-effectiveness.
Conclusions:
- Home cook interventions are a cost-effective strategy for CVD prevention in China.
- Public health policymakers should consider widespread adoption of these interventions.
- Implementing these interventions can lead to significant reductions in CVD burden and healthcare expenditures.
