Original ArticleEndophthalmitis Rates among Medicare Beneficiaries Undergoing Cataract Surgery between 2011 and 2019
Section snippets
Study Population
This was a retrospective, cross-sectional analysis of the 2011–2019 100% Medicare fee-for-service claims accessed via Centers for Medicare and Medicaid Services Virtual Research Data Center. We identified all patients who underwent at least 1 cataract surgery between 2011 and 2019 using Current Procedural Terminology codes (66982, 66983, 66984, 66850, 66920, 66930, and 66940). We excluded patients without 12 months continuous enrollment in Medicare Parts A and B before their cataract surgery
Study Population Demographics
A total of 14 396 438 cataract surgeries were performed among Medicare beneficiaries between 2011 and 2019 (Fig S1, available at www.aaojournal.org). Most procedures performed were among patients aged 65 to 74 years (52.1%), women (60.1%), and Whites (87.8%) (Table 1). Approximately 69% of cases performed were in ASCs, with ASC use increasing from 63.1% in 2011 to 74.9% in 2019. Most cataract cases (97%) were stand-alone procedures. A small proportion of combined cataract cases had more than 1
Discussion
In our analysis of more than 14 million cataract surgeries performed between 2011 and 2019, the overall endophthalmitis rate within 90 days of the cataract surgery was 1.36 per 1000 cataract surgeries. A declining trend in postoperative endophthalmitis rates was observed across all races/ethnicities during the 9-year study period. Patient gender, race, comorbidity burden, and history of glaucoma surgery were found to influence the risk of developing endophthalmitis. We also found significant
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Supplemental material available at www.aaojournal.org.
Disclosure(s):
All authors have completed and submitted the ICMJE disclosures form.
The author(s) have no proprietary or commercial interest in any materials discussed in this article.
HUMAN SUBJECTS: Human subjects were included in this study. The human ethics committees at the Johns Hopkins University School of Medicine approved the study. This was a retrospective study using de-identified Medicare data, informed consent was not possible. All research adhered to the tenets of the Declaration of Helsinki.
No animal subjects were used in this study.
Author Contributions:
Conception and design: Zafar, Dun, Srikumaran, Wang, Schein, Makary, Woreta
Data collection: Dun, Wang, Makary
Analysis and interpretation: Zafar, Dun, Srikumaran, Schein, Makary, Woreta
Obtained funding: N/A
Overall responsibility: Zafar, Dun, Srikumaran, Wang, Schein, Makary, Woreta