In the most recent issue of Health Affairs, Feher and Menashe write about a recent randomized control trial to improve choice quality on the Covered California individual health insurance marketplace. Covered California had, in 2019, roughly 20,000 households earning under 200% Federal Poverty Level (FPL) who were qualified for Cost Sharing Reduction (CSR) subsidies for either the 94% or 87% actuarial value silver variants. However these households bought either gold or platinum plans. Gold or platinum plans will offer worse cost sharing at the same or higher net premiums on the same network/insurer as the silver variant. This is a very similar analytical set-up that Petra Rasmussen and I are using as we looked at households earning over 200% FPL in 2018 while Feher and Menashe look at under 200% FPL in 2019 to identify households in dominated plans.