|OTOLARYNGOLOGY - HEAD AND NECK SURGERY (UNITED STATES)
|Year Of Publishing
Data extraction errors and double counting
Inadequate analysis of heterogeneity
|Number of systematic reviews included
|Summary of Findings
|The letter highlights concerns over the conduct of one systematic review with meta-analysis on the prevalence of olfactory dysfunction in patients with COVID-19, published in 2020. These include the use of meta-analysis despite significant heterogeneity of studies using various non-validated instruments across multiple geographic locations and errors with the labelling of data extracted.
|Did the article find that the problem(s) led to qualitative changes in interpretation of the results?
|Are the methods of the article described in enough detail to replicate the study?