Table 2 Logistic regression analysis of deaths among hospitalized patients infected by the Omicron and Delta Variants. Showing Odds Ratios^† (95% confidence intervals)

Age group ( > = 60 vs. <60)

13.10 (3.71, 83.60)

8.04 (3.06, 27.75)

17.46 (5.05, 110.51)

9.66 (4.06, 28.70)

Immunocompromised (Yes vs. No)

2.58 (0.87, 7.02)

1.90 (0.68, 4.77)

2.80 (1.03, 7.08)

2.26 (0.95, 5.06)

Diabetes Mellitus (Yes vs. No)

1.77 (0.74, 4.09)

1.36 (0.64, 2.81)

2.15 (1.01, 4.51)

1.67 (0.90, 3.04)

Hypertension (Yes vs. No)

0.37 (0.16, 0.83)

0.42 (0.21, 0.85)

0.39 (0.18, 0.80)

0.61 (0.34, 1.09)

Other underlying diseases (Yes vs. No)

1.32 (0.59, 2.90)

1.43 (0.72, 2.80)

1.32 (0.64, 2.67)

1.77 (1.0, 3.13)

Reason of admission (Other vs. COVID-19)

0.14 (0.022, 0.48)

0.31 (0.11, 0.71)

0.67 (0.29, 1.47)

0.98 (0.53, 1.78)

Positive RT-PCR test before admission^‡ (Yes vs. No)

2.04 (0.91, 4.50)

1.46 (0.70, 2.95)

2.17 (1.03, 4.51)

1.65 (0.87, 3.06)

Variant (Delta vs. Omicron)

0.82 (0.34, 1.87)

0.67 (0.31, 1.39)

0.86 (0.39, 1.83)

0.59 (0.30, 1.10)

Vaccinated (≥1 vs. 0 doses)

1.38 (0.60, 3.14)

1.21 (0.59, 2.45)

1.33 (0.63, 2.78)

1.09 (0.60, 1.96)