The impact of Medicaid expansion on emergency department wait times

Objective To estimate the impact of Medicaid expansion on emergency department (ED) wait times. Data sources We used 2012–2017 hospital‐level secondary data from the CMS Hospital Compare data warehouse. Study design We used a state‐level difference‐in‐differences approach to identify the impact of Medicaid expansion on four measures of ED wait times: time before being seen by a provider; time before being sent home after being seen by a...