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. 2022 Oct 21;7(6):1909–1914. doi: 10.1002/lio2.874

FIGURE 1.

FIGURE 1

(A) Endotracheal tube size in male patients. An endotracheal tube with an internal diameter (ID) of 7.5 mm (outer diameter [OD] of 11.2 mm) was used most frequently in both groups. An endotracheal tube with an ID of 8.0 mm (OD of 11.8 mm) was less commonly used in the COVID‐19 group than in the control group. (B) Endotracheal tube size in female patients. All patients with COVID‐19 were intubated with an endotracheal tube with an ID of 7.0 mm (OD 10.4 mm), and 57.1% of patients in the control group were intubated with an endotracheal tube with an ID of 7.5 mm (OD of 11.2 mm)