We investigate two determinants of the price sensitivity of health plan demand: the size of the choice set and the salience of premium differences. Using variation in both features in the German Social Health Insurance (SHI) and information on health plan switches of retirees in the German Socio...

Many competitive health insurance markets adjust payments to participating health plans according to their enrollees' risk - including based on diagnostic information. We investigate responses of German health plans to the introduction of morbidity-based risk adjustment in the Statutory Health...

This paper evaluates whether health plans in Germany's Social Health Insurance select on an easily observable predictor of risk: geography. To identify plan behavior separately from concurrent demand-side adverse selection, I implement a double-blind audit study in which plans are contacted by...