Moral hazard and the demand for health services: A matching estimator approach
AbstractWe estimate the impact of extra health insurance coverage beyond a National Health System on the demand for several health services. Traditionally, the literature has tried to deal with the endogeneity of the private (extra) insurance decision by finding instrumental variables. Since a priori instrumental variables are hard to find we take a different approach. We focus on the most common health insurance plan in Portugal, ADSE, which is given to all civil servants and their dependents. We argue that this insurance is exogenous, i.e., not correlated with the beneficiaries’ health status. This identifying assumption allows us to estimate the impact of having ADSE coverage on the demand for three different health services using a matching estimator technique. The health services used are number of visits, number of blood and urine tests, and the probability of visiting a dentist. Results show large positive effects of ADSE coverage for number of visits and tests among the young (18–30 years old) but only the latter is statistically significantly different from zero. The effects represent 21.8% and 30% of the average number of visits and tests for the young. On the contrary, we find no evidence of moral hazard on the probability of visiting a dentist.
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Bibliographic InfoPaper provided by Universidad Carlos III de Madrid in its series Open Access publications from Universidad Carlos III de Madrid with number info:hdl:10016/4231.
Length: 1006–1025 p.
Date of creation: Jul 2008
Date of revision:
Publication status: Published in Journal of Health Economics (2008-07) v. 27, p.1006–1025-
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Web page: http://www.uc3m.es
Demand for health services; Matching estimator; Moral hazard; Portuguese health system;
Other versions of this item:
- Barros, Pedro Pita & Machado, Matilde P. & Sanz-de-Galdeano, Anna, 2008. "Moral hazard and the demand for health services: A matching estimator approach," Journal of Health Economics, Elsevier, vol. 27(4), pages 1006-1025, July.
- Pedro Pita Barros & Matilde P. Machado & Anna Sanz de Galdeano, 2005. "Moral Hazard And The Demand For Health Services: A Matching Estimator Approach," Economics Working Papers we055928, Universidad Carlos III, Departamento de Economía.
- Machado, Matilde Pinto & Pita Barros, Pedro Luis & Sanz-de-Galdeano, Anna, 2006. "Moral Hazard and the Demand for Health Services: A Matching Estimator Approach," CEPR Discussion Papers 5488, C.E.P.R. Discussion Papers.
- C31 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Cross-Sectional Models; Spatial Models; Treatment Effect Models; Quantile Regressions; Social Interaction Models
- I11 - Health, Education, and Welfare - - Health - - - Analysis of Health Care Markets
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