Table 5. Comparison of frequency distribution of lung involvement findings in the two groups.

Statistics are numbers (%). P-value < 0.05 was considered statistically significant.

Lung involvement	Group		P-value
	Severe COVID-19 (N=161)	Non-severe COVID-19 (N=245)
0 or none	3 (1.9%)	12 (4.9%)	0.001
1–5% or minimal	17 (10.6%)	67 (27.3%)
6–25% or mild	61 (37.9%)	107 (43.7%)
26–49% or moderate	41 (25.5%)	45 (18.4%)
50–74% or severe	36 (22.4%)	14 (5.7%)
≥ 75% or extensive	3 (1.9%)	0%