EXPERT REACTION: Analysis finds steroids help treat critically ill COVID-19 patients
Meta-analysis: This type of study involves using statistics to combine the data from multiple previous studies to give an overall result. The reliability of a meta-analysis depends on both the quality and similarity of the individual studies being grouped together.
Randomised controlled trial: Subjects are randomly assigned to a test group, which receives the treatment, or a control group, which commonly receives a placebo. In 'blind' trials, participants do not know which group they are in; in ‘double blind’ trials, the experimenters do not know either. Blinding trials helps removes bias.
People: This is a study based on research using people.
Treating critically ill COVID-19 patients with corticosteroids, including dexamethasone, methylprednisolone, and hydrocortisone, is associated with improved survival, a new meta-analysis with Australian and NZ authors has found. Looking at seven randomised clinical trials involving 1703 patients from around the world, including a trial run in Australia and New Zealand, researchers found corticosteroid treatment resulted in fewer deaths, longer survival times and fewer adverse events, compared with a placebo or usual care. The meta-analysis is being published alongside the results from three of the trials featured in the meta-analysis, including the REMAP-CAP study led by Australia and involving New Zealand researchers, as well as new guidelines from the World Health Organization regarding use of corticosteroids for treatment of critically ill COVID-19 patients.
Journal/conference: JAMA
Link to research (DOI): 10.1001/jama.2020.17023
Organisation/s: Australian Science Media Centre, Monash University, Health Research Council of New Zealand (HRC)
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Expert Reaction
These comments have been collated by the Science Media Centre to provide a variety of expert perspectives on this issue. Feel free to use these quotes in your stories. Views expressed are the personal opinions of the experts named. They do not represent the views of the SMC or any other organisation unless specifically stated.
Professor Richard Head is a Pharmacologist and currently Adjunct Professor in the Clinical and Health Sciences Unit at the University of South Australia