INTRODUCTION: The Brazilian private health insurance sector has operated since 1940’s without regulation. In 1998, the Brazilian Government stating the regulation of this sector. The reform improved the health insurance coverage level, stating no limit to physician visits and proibition to...

Moral hazard--the tendency to change behavior when the cost of that behavior will be borne by others--is a particularly tricky question when considering health care. Kenneth J. Arrow's seminal 1963 paper on this topic (included in this volume) was one of the first to explore the implication of...

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...