Clinical and endoscopic analysis of gastrointestinal bleeding during the COVID-19 pandemic: A retrospective cohort study

The epidemiological data (including sex, age, height, weight, BMI, etc.) and clinical data (The 30 days mortality，the need for intensive care unit (ICU) level of care，length of hospital stay ，readmission within 30 days，rebleeding during the admission，initial symptoms,laboratory examination, blood transfusion and anticoagulant therapy, use of non-steroidal anti-inflammatory drugs (NSAIDs), frequency of endoscopy, and examination results) of patients in China from October 2020 to March 2022 were collected