Health Care Competition and Antibiotic Use in Taiwan

Daniel Bennett, Che-Lun Hung and Tsai-Ling Lauderdale

Journal of Industrial Economics, 2015, vol. 63, issue 2, 371-393

Abstract: type="main">

Antibiotic resistance, a negative externality of antibiotic use, is a growing threat to public health. Health care competition may encourage antibiotic use because receiving an antibiotic is a form of ‘quality’ for many patients. This paper examines the effect of market concentration on antibiotic use in a large, nationally-representative data set from Taiwan. Moving from the 75th percentile to the 25th percentile of market concentration is associated with 6.6 per cent greater antibiotic use. We control for leading market-level confounds, including population density and community health. We also show that the correlation is robust using fixed effects for patients, physicians and diagnoses. We document the correlation between antibiotic use and patient retention, which suggests a mechanism for this result. Finally, we show that strict regulation of antibiotics reduces but does not eliminate the effect of competition on antibiotic use.

Date: 2015
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