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Updated: Dec 2, 2025
Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
Published on: August 30, 2013
Disruptions in preventive care: Mammograms during the COVID-19 pandemic
Hummy Song1,2, Alon Bergman2,3, Angela T Chen2,4
1Operations, Information and Decisions Department, The Wharton School, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Objective:
To measure the extent to which the provision of mammograms was impacted by the COVID-19 pandemic and surrounding guidelines.
Data Sources:
De-identified summary data derived from medical claims and eligibility files were provided by Independence Blue Cross for women receiving mammograms.
Study Design:
We used a difference-in-differences approach to characterize the change in mammograms performed over time and a queueing formula to estimate the time to clear the queue of missed mammograms.
Data Collection:
We used data from the first 30 weeks of each year from 2018 to 2020.
Principal Findings:
Over the 20 weeks following March 11, 2020, the volume of screening mammograms and diagnostic mammograms fell by 58% and 38% of expected levels, on average. Lowest volumes were observed in week 15 (April 8 to 14), when screening and diagnostic mammograms fell by 99% and 74%, respectively. Volumes began to rebound in week 19 (May), with diagnostic mammograms reaching levels to similar to previous years' and screening mammograms remaining 14% below expectations. We estimate it will take a minimum of 22 weeks to clear the queue of missed mammograms in our study sample.
Conclusions:
The provision of mammograms has been significantly disrupted due to the COVID-19 pandemic.
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