Table 2 Odds of delirium based on COVID-19 severity and age among patients with COVID-19

COVID-19 severity*

  1–hospitalized, no oxygen therapy

ref

ref

  2–oxygen by mask or nasal prongs vs. 1–hospitalized, no oxygen therapy

1.9 (0.7, 5.2); p = 1.0

2.0 (0.6, 6.5); p = 0.6*

  3/4– ventilation or high-flow oxygen vs. 1–hospitalized, no oxygen therapy

3.5 (1.2, 10.7); p = 0.04

7.2 (1.9, 27.4); p = 0.003*

Age**

  Age < 45 years

ref

ref

  Age 45–65 years

2.8 (0.97, 7.9);

P = 0.99

2.4 (0.7, 7.5);

P = 0.64**

  Age > 65 years

7.5 (2.4, 23.9);

P = 0.002

8.7 (2.2, 33.5);

P = 0.003**