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Mark Duggan
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Journal Articles
Publisher: Journals Gateway
The Review of Economics and Statistics 1–45.
Published: 27 September 2022
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We study Medicare's competitive bidding program (CBP) for durable medical equipment (DME). We use Medicare claims data to examine the effect on prices and utilization, focusing on continuous positive airway pressure (CPAP) devices for sleep apnea. We find that spending falls by 47.2% percent after a highly imperfect bidding mechanism is introduced. This is almost entirely driven by a 44.8% price reduction, though quantities also fall by 4.3%. To disentangle supply and demand, we leverage differential cost sharing across Medicare recipients. We measure a demand elasticity of -0.272 and find that quantity reductions are concentrated among less clinically appropriate groups.
Includes: Supplementary data
Journal Articles
Publisher: Journals Gateway
The Review of Economics and Statistics (2011) 93 (3): 786–799.
Published: 01 August 2011
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We examine the effect of more than 3,400 gun shows using data from Gun and Knife Show Calendar and vital statistics data from California and Texas. Considering the one month following each show and a surrounding area ranging from 80 to 2,000 square miles, we find no evidence that gun shows increase either gun homicides or suicides. The similarity of our estimates for California and Texas suggests that the much tighter California gun show regulations do not substantially reduce the number of firearms-related deaths in that state. Using incident-level crime data for Houston, Texas, we also find no evidence of an effect on other crime categories.
Includes: Supplementary data