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Flow-diagram describing inclusion of patients for COVID-19 training and test datasets. 23,805 X-rays were queried and ultimately 2488 met criteria of a documented COVID-19 test within 14 days of an eligible PA or AP CXR. 2000 were used in the training cohort with 488 retained as internal holdout for validation. Missing data from 32 patients, defined as images that failed the AI segmentation due to poor imaging quality, were excluded
