Medical insurance and free choice of physician shape patient overtreatment: A laboratory experiment

Arbeitspapier

In a laboratory experiment designed to capture key aspects of the interaction between physicians and patients, we study the effects of medical insurance and competition in the guise of free choice of physician, including observability of physicians' market shares. Medical treatment is an example of a credence good: only the physician knows the appropriate treatment, the patient does not. Even after a consultation, the patient is not sure whether he received the right treatment or whether he was perhaps overtreated. We find that with insurance, moral hazard looms on both sides of the market: patients consult more often and physicians overtreat more often than in the baseline condition. Competition decreases overtreatment compared to the baseline and patients therefore consult more often. When the two institutions are combined, competition is found to partially offset the adverse effects of insurance: most patients seek treatment, but overtreatment is moderated.

Object Details

• Language: Englisch

References and Relationships

• Bibliographic citation: Series: WZB Discussion Paper ; No. SP II 2014-307r

Classification and Topics

• Classification: Wirtschaft ; Design of Experiments: Laboratory, Individual ; Analysis of Health Care Markets ; Health Insurance, Public and Private
• Subject: Credence good ; Physician ; Overtreatment ; Competition ; Insurance

Contributors, Places and Time

• Event: Geistige Schöpfung
• (who): Huck, Steffen ; Lünser, Gabriele ; Spitzer, Florian ; Tyran, Jean-Robert
• Event: Veröffentlichung
• (who): Wissenschaftszentrum Berlin für Sozialforschung (WZB)
• (where): Berlin
• (when): 2016

Further information

• Handle: http://hdl.handle.net/10419/142222
• Last update: 10.03.2025, 11:42 AM CET