test-negative design
Coverage of test-negative design in the Nexus archive.
- COVID-19 vaccine study that was blocked from CDC journal is published elsewhere
A study on COVID-19 vaccine effectiveness, initially blocked from publication in a CDC journal, was published in JAMA Network Open. The study found vaccines reduced hospitalizations by 55% and emergency/urgent care visits by 50%, using a methodology criticized by CDC acting director Jay Bhattacharya but defended by public health researchers.
- COVID-19 vaccine study that was blocked from CDC journal is published elsewhere
A study on the effectiveness of the COVID-19 vaccine, initially blocked from publication in a CDC journal, found the vaccine to be 55% effective against hospitalizations and 50% effective against emergency department/urgent care visits. The study, published in JAMA Network Open, used a test-negative design methodology, which CDC acting director Jay Bhattacharya criticized for potential flaws, though public health researchers defend its reliability.