Errors and Biases in Meta-analysis of the Prevalence of Olfactory Dysfunction in Patients With COVID-19

Ref ID 801
First Author A. Santamaria-Gadea
Journal OTOLARYNGOLOGY - HEAD AND NECK SURGERY (UNITED STATES)
Year Of Publishing 2021
URL https://journals.sagepub.com/doi/pdf/10.1177/0194599820951133
Keywords Error
COVID
Heterogeneity
Otolaryngology
Non-Cochrane reviews
Problem(s) Data extraction errors and double counting
Inadequate analysis of heterogeneity
Number of systematic reviews included 1
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? Not Applicable
Are the methods of the article described in enough detail to replicate the study? No