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Dr. Ravi Parikh Interview
October 7, 2019
Dr. Parikh Lecturing at the 2019 American Academy of Ophthalmology meeting, the largest meeting of ophthalmologists in the US
October 21, 2019

Dr. Parikh leading a team of colleagues from Yale School of Medicine and Harvard/Mass Eye and Ear/Mass General examining screening rates of Diabetic Retinopathy published in Ophthalmology, the leading clinical journal in the field.

Purpose
To evaluate the association between Medicaid expansion and diabetic dilated eye examinations.

Design
A retrospective difference in differences analysis using individual-level survey response data from January 1, 2009 to December 31, 2017.

Subjects
A total of 52,392 survey responses from 50 states and the District of Columbia between 2009 and 2017. Responders were adults aged 18-64 reporting a previous diagnosis of diabetes and a household income below 138% of the United States federal poverty line.

Methods
The Centers for Disease Control and Prevention’s Behavioral Risk Factor Surveillance System data was used to identify survey responders who were asked about the presence of dilated eye examinations from years before and after Medicaid expansion implementation.

Main Outcome Measures
The difference in differences in proportion of dilated eye examinations among diabetics 18-64 years of age with household incomes below 138% of the federal poverty line between states that did and did not implement Medicaid expansion.

Results
Implementation of Medicaid expansion policies was associated with a 1.3% (95% CI, -3.8 to 6.4; p=0.61), 6.3% (95% CI, 1.3 to 11.3; p=0.016), 4.1% (95% CI, -0.8 to 9.0; p=0.11) and 2.3% (95% CI, -1.6 to 6.2; p=0.23) increase in the proportion of diabetics aged 18-64 with incomes below 138% of the federal poverty line receiving a dilated eye examination within the past year due to Medicaid expansion 1, 2, 3 and 4 cumulative years after expansion, respectively.

Conclusions
Medicaid expansion policies were significantly associated with an increase in dilated eye examination rates within the first 2 years after implementation. However, this increase did not persist beyond this period with non-significant increases 3 and 4 cumulative years after implementation. Healthcare policy makers should be aware that additional measures beyond expanding insurance coverage may be necessary to increase the rate of dilated eye examinations among diabetic populations.

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November 19, 2019

Dr Parikh Presenting at Cornell Medical School


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October 21, 2019

Dr. Parikh Lecturing at the 2019 American Academy of Ophthalmology meeting, the largest meeting of ophthalmologists in the US


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October 7, 2019

Dr. Ravi Parikh Interview


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