Table 1. Comparison of demographic and clinical characteristics
	Alpha/delta	Omicron
Age	61.15 ± 15.05	71.51 ± 13.88
Male	51.7% (77)	56.4% (92)
Presence of comorbidities	77.18% (115)	90.80% (148)
Hypertension	56.52% (65)	57.43% (85)
Coronary artery disease*	13.04% (15)	24.32% (36)
Congestive heart failure	24.35% (28)	15.54% (23)
Diabetes mellitus**	31.30% (36)	37.84% (56)
COPD***	7.83% (9)	23.65% (35)
Malignancy	22.61% (26)	20.27% (30)
*p< 0.05. **p< 0.05. ***p< 0.001