Background: The necessity to measure and reward "value for money" of new pharmaceuticals has become central in health policy debates, as much as the requirement to assess the "willingness to pay" for an additional, qualityadjusted life year (QALY). There is a clear need to understand the...

Objectives Value-based insurance design (VBID) aims to direct consumers' preferences by incentivizing the use of high-value care and discouraging the use of low-value care. However, consumers often have limited knowledge of health insurance and the health insurance system, possibly distorting...