We investigate the presence of moral hazard and advantageous or adverse selection in a market for supplementary health insurance. For this we specify and estimate dynamic models for health insurance decisions and health care utilization. Estimates of the health care utilization models indicate...

"Prices in government and employer-sponsored health insurance markets only partially reflect insurers' expected costs of coverage for different enrollees. This can create inefficient distortions when consumers self-select into plans. We develop a simple model to study this problem and estimate...

"Inequality in access to health care services, through private purchase, appears to pose policy challenges greater than inequality in other spheres. This paper explores how inequality in access to health care services relates to social welfare. I examine the sources of private demand for health...