Diabetes and COVID-19: Role of insulin resistance as a risk factor for COVID-19 severity

Table 1 Clinical studies that reported insulin resistance markers in patients with Diabetes and coronavirus disease 2019

Ref.	Study design	Sample size	T2DM	Markers of IR	Age	Outcomes	Country
Wang et al[57], 2021	Retrospective	172	72	Hypertriglyceridemia (Fibrinogen, triglycerides, Serum ferritin	66 (Median)		China
Ren et al[53], 2020	Retrospective	151	39	Triglyceride-glucose index	59.5 (Mean)	Severity and mortality	China
Alcántara-Alonso[58], 2021	Observational cohort	43	25	Triglyceride to high density lipoprotein cholesterol	57.19 (Mean)	Incidence of acute kidney injury, requirement of invasive mechanical ventilation, vasopressor support, days of hospitalization and mortality	Mexico

IR: Insulin receptor; T2DM: Type 2 diabetes mellitus.