This research examines how physicians' imaging-ordering strategies affect emergency department efficiency. Using electronic health records and an instrumental variable approach based on random physician assignment, the study finds that discretionary batching of imaging tests increases length of stay by 65% and doubles imaging utilization, ultimately reducing patient flow and safety.

This research examined how COVID-19 viral loads change over time across saliva, throat, and nasal samples. The study found that different sample types detect infection at different stages, demonstrating that testing method matters. These findings could improve diagnostic strategies for COVID-19, influenza, RSV, and future emerging respiratory viruses.

This research develops a new vision test to improve glaucoma detection, especially in short-sighted individuals. By measuring the smallest rapidly flashing visual stimulus rather than the dimmest, the method better distinguishes glaucoma from myopia, enabling earlier diagnosis, reduced misdiagnosis, and improved outcomes for patients at risk of vision loss.