Table 3 Definition of severe COVID-19 used in each study
Author | Year | Definition of a severe form of COVID-19 |
|---|---|---|
Céline Louapre | 2020 | 7-point ordinal scale (ranging from 1 [not hospitalized with no limitations on activities] to 7 [death]) with a cut off at 3 (hospitalized and not requiring supplemental oxygen) |
Philip Zachariah | 2020 | Severe diseaseas defined by the requirement for mechanical ventilation |
Frederick S | 2020 | defined as admission to the intensive care unit or death |
QingxianCai | 2020 | based on results from chest radiography, clinical examination, and symptoms |
Kenneth I | 2020 | based on the current management guideline |
Ling Hu | 2020 | based initial clinical presentation |
Rui Huang | 2020 | according to guidelines for the diagnosisand treatment of novel coronavirus (2019-nCoV) infection by the national health commission (trial version 5) |
Ming Deng | 2020 | rapid decline in albumin level, the decrease in albumin was accompanied by an increase in D-dimer, which is an indicator of hypercoagulation |