Table 1.

Eligibility criteria.

PICOS	Inclusion	Exclusion
Participants	All patients with confirmed COVID-19 infection regardless of age	Pregnancy Pre-existing coagulation disorder
Intervention	Viscoelastometric testing performed	-
Comparison	Reference values (manufacturer’s based or healthy controls) ICU COVID-19 patients and non-ICU COVID-19 patients ICU COVID-19 patients and ICU non-COVID-19 patients	-
Outcomes	VET parameters in COVID-19 patients Difference in VET parameters between ICU COVID-19 patients and non-ICU COVID-19 patients Difference in VET parameters between ICU COVID-19 patients and ICU non-COVID-19 patients Association between VET parameters and clinical outcomes Association between VET parameters and Clauss fibrinogen	-
Study design	Randomized controlled trials Observational clinical studies Case reports	Opinion papers Review papers Healthcare guidelines Protocol Non-human or in vitro studies

Abbreviations: VET: viscoelastometric testing; ICU: Intensive care unit.