Effective policies to promote sugar reduction in soft drinks: lessons from a comparison of six European countries.

The analysis supports the conclusions that sugar reductions in new SSBs have been greater in countries that have adopted specific policies to encourage them; a sugar-based tax design encourages more sugar reductions than a volume-based tax design; the tax rate and the amount of the tax reduction from switching to the next lower tier in a sugar-based tax design may be critical to incentivize reformulation.