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Comment & Response |

Influence of Managed Care on the Variation in Rate and Timing of Cataract Surgery—Reply

Joshua D. Stein, MD, MS1,2,3; Paul P. Lee, MD, JD2,3
[+] Author Affiliations
1Department of Health Management and Policy, School of Public Health, University of Michigan, Ann Arbor
2Department of Ophthalmology and Visual Sciences, W. K. Kellogg Eye Center, University of Michigan, Ann Arbor
3Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor
JAMA Ophthalmol. 2016;134(7):847. doi:10.1001/jamaophthalmol.2016.1123.
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In Reply We agree that market forces and contractual arrangements can contribute to some of the geographic variation noted in our study. All of the data to which we had access for our study came from patients who were receiving their care from the same managed-care network. We did not have access to data capturing the care of patients with other forms of health insurance. Because the US health care system has many different public and private health care insurers and there is not yet a single data source that captures care of patients across insurance plans (although the American Academy of Ophthalmology Intelligent Research in Sight [IRIS] Registry may address this in the future), it is challenging for researchers to fully capture the extent by which market forces are driving the geographic variation in care noted. For now, we welcome other researchers to replicate our study using other data sources to help answer this important question.

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July 1, 2016
Dustin D. French, PhD; Curtis E. Margo, MD, MPH; Paul B. Greenberg, MD
1Department of Ophthalmology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois2Center for Healthcare Studies, Feinberg School of Medicine, Northwestern University, Chicago, Illinois3Veterans Affairs Health Services Research and Development Service, Chicago, Illinois
4Department of Pathology and Cell Biology, Morsani College of Medicine, University of South Florida, Tampa
5Division of Ophthalmology, Alpert Medical School, Brown University, Providence, Rhode Island
JAMA Ophthalmol. 2016;134(7):846-847. doi:10.1001/jamaophthalmol.2016.1115.
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