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. 2021 Apr 19;9:e11205. doi: 10.7717/peerj.11205

Figure 1. Patient selection flowchart.

Figure 1

The final sample sizes included 1,203 patients admitted to general floor (“general floor”, Group A) and 104 directly admitted to the ICU from the ED (“direct ICU”, Group B), 979 patients remained on the general floor (“no upgrade”, Group C) and 224 were upgraded from the general floor to the ICU (“upgrade ICU”, Group D).