Clinical outcomes of the omicron variant compared with previous SARS-CoV-2 variants; meta-analysis of current reports

Figure 1  Flowchart of literature search and study selection process. ‎

Figure 2  Forest plot of the meta-analysis on intensive care unit admission for patients infected with severe acute respiratory syndrome coronavirus 2 omicron variant.

Figure 3  Forest plot of the meta-analysis for need for mechanical ventilation in patients infected with severe acute respiratory syndrome coronavirus 2 omicron variant.

Figure 4  Forest plot of meta-analysis of risk of mortality in patients infected with severe acute respiratory syndrome coronavirus 2 omicron variant.

Figure 5  Funnel plot of meta-analysis of disease severity of patients intfected with severe acute respiratory syndrome coronavirus 2 omicron variant compared with previous variants.