Coronavirus Disease (COVID-19) Pandemic: An Overview of Systematic Reviews

Israel Junior Borges do Nascimento; Donal P O'Mathuna; Thilo Caspar von Groote; Hebatullah Mohamed Abdulazeem; Ishanka Weerasekara; Ana Marusic; Livia Puljak; Vinicius Tassoni Civile; Irena Zakarija-Grkovic; Tina Poklepovic Pericic; Alvaro Nagib Atallah; Santino Filoso; Nicola Luigi Bragazzi; Milena Soriano Marcolino

The copyright holder for this preprint (which was not peer-reviewed) is the . cardiac effusions, halo signs and pneumothorax were observed in patients suffering from COVID-19. Table S3 shows the detailed results of the quality assessment of 18 systematic reviews, including assessment of individual items and summary assessment. Overall confidence in results of reviews was assessed for 17 reviews; for one empty review summary assessment was not made [25] . Using AMSTAR 2 criteria, confidence in the results of 13 out of 17 reviews with included studies was rated as "critically low", one as "low", one as "moderate" and two as "high". Common methodological drawbacks were: omission of prospective protocol submission or publication; use of inappropriate search strategy: lack of independent and dual literature screening and data-extraction (or methodology unclear); absence of explanation for heterogeneity among the studies included; lack of reasons for study exclusion (or rationale unclear).