Table 1.

Demographic data and comorbid conditions in patients with different disease severities.

Feature	Disease severity			P1	P2***
	Mild/moderate (N = 33)	Severe (N = 139)	Critical (N = 28)
Demographic data
Sex (female)	15 (45.5)	55 (39.6)	12 (42.9)	0.569*	0.807
Age (years)	54.87 ± 18.35	57.80 ± 14.80	66.71 ± 16.61	0.149**	0.009
Comorbid conditions
DM	6 (18.2)	43 (30.9)	12 (42.9)	0.093*	0.111
IHD	5 (15.2)	22 (15.8)	7 (25.0)	0.757*	0.476
Hypertension	7 (21.2)	40 (28.8)	10 (35.7)	0.310*	0.454
Asthma	0 (0.0)	5 (3.6)	0 (0.0)	0.314*	0.325
Autoimmune disease	1 (3.0)	3 (2.2)	1 (3.6)	> 0.999*	0.888
CKD	0 (0.0)	2 (1.4)	1 (3.6)	0.438*	0.517
Transplantation	1 (3.0)	0 (0.0)	0 (0.0)	0.024*	0.079
COPD	2 (6.1)	13 (9.4)	1 (3.6)	0.653*	0.721
Cerebrovascular disease	0 (0.0)	3 (2.2)	0 (0.0)	0.438*	0.513
CNS disease	0 (0.0)	2 (1.4)	0 (0.0)	0.528*	0.642
Hepatitis	1 (3.0)	0 (0.0)	0 (0.0)	0.024*	0.079
Hypothyroidism	0 (0.0)	2 (1.4)	1 (3.6)	0.438*	0.517
Malignancy	0 (0.0)	3 (2.2)	5 (17.9)	0.199*	< 0.001
Smoking	5 (15.2)	14 (10.1)	4 (14.3)	0.822*	0.544
Addiction	0 (0.0)	5 (3.6)	0 (0.0)	0.593*	0.325
Alcohol use	0 (0.0)	1 (0.7)	0 (0.0)	> 0.999*	0.802
Clinical characteristics of COVID-19
Symptomatic period (days)	6.00 ± 6.50	7.09 ± 4.31	6.81 ± 3.54	0.294**	0.555
Hospital stay (days)	6.48 ± 3.94	7.27 ± 3.39	7.56 ± 4.74	0.249**	0.484

DM diabetes mellitus, IHD ischemic heart disease, CKD chronic kidney disease, COPD chronic obstructive pulmonary disease, CNS central nervous system.

P₁: Comparison between mild/moderate and severe/critical groups.

P₂: Comparison between mild/moderate, severe, and critical groups.

Bold values are statistically significant (P < 0.05).

*Chi-square or Fisher’s exact test.

**Mann–Whitney test.

***Kruskal–Wallis test.