Percentage of Non-Positive Yelp Reviews (IMAGE) University of Pennsylvania School of Medicine Caption A chart that shows the proportion of 4- and 5-star reviews health care facilities received on Yelp, demonstrating a change after the COVID-19 pandemic struck. Credit Chart by Neil Sehgal, et al. Appears in JAMA Network Open. Usage Restrictions Both creator and journal must be credited. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.