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Table 2 Details of assumptions for each salt substitute strategy to calculate impact on average dietary salt intake, Vietnam

From: The cost-effectiveness of government actions to reduce sodium intake through salt substitutes in Vietnam

Parameter

Voluntary

Subsidised

Regulatory

Source

Average daily salt intake (A)

9.4 g/day

9.4 g/day

9.4 g/day

[23]

Proportion of salt from target products (B)

70%

70%

70%

[24]

Sodium reduction in target products due to reformulation

60%

60%

60%

[30]

Proportion of target products reformulated with potassium chloride (C)

30%

50%

100%

Assumptions

Proportion of people choosing reformulated target products (D)

5%

44%

100%

[31]

Dietary salt reduction due to reformulation (E)

0.058 g/day

0.865 g/day

3.95 g/day

A x B X C X D Gillespie 2015 [29]

Full effect of strategy on average daily salt intake

9.34 g/day

8.53 g/day

5.45 g/day

A - E

  1. An additional 5% reduction from baseline was added to the subsidised intervention to reflect the additional benefit of a communications intervention to reduce salt intake in Vietnam; target products include salt, fish sauce, bot canh