Supplementary Material for: Characteristics and Outcomes of Endoscopies before and during the COVID-19 Pandemic in New York

Introduction: The COVID-19 pandemic drastically changed hospital workflows. This study aimed to characterize differences in gastrointestinal endoscopies in the New York metropolitan region before, during, and after the first wave of the pandemic. Methods: Across 3 hospitals, we compared demographics, indications, and yield of endoscopies before and after March 16, 2020, the date on which elective procedures were canceled, as well as a recovery period for 5 months after they were resumed. Results: A total of 9,401 procedures before and 332 procedures during the first wave were performed. Females comprised 57 and 44% of patients (p p p p p = 0.01), but no increase in yield of inpatient colonoscopy for bleeding. A review of 7,475 procedures during the recovery period showed a return to many nonurgent indications, but still showed decreased proportions of Hispanic and male patients compared to the prepandemic period. Discussion/Conclusion: Lower proportions of Black and Hispanic patients underwent outpatient endoscopies during and after the first wave. The proportion of procedures done for emergent indications and their diagnostic yield increased during the pandemic, suggesting a higher threshold to perform endoscopy. In resource-sparing conditions, clinicians should pay attention to thresholds to perform colonoscopy for bleeding and to racial disparities in outpatient healthcare access.