Table 3. Comparison between CT severity score and comorbidities in the first and second waves of COVID-19.

Chi-sqaure = 18.69, df = 3; p < 0.001* (chi-square test).

CORADS: COVID-19 Reporting and Data System; CT: computed tomography; COVID-19: coronavirus disease 2019

		Group
		First wave		Second wave		Total
		Count	%	Count	%	Count	%
CORADS	3	11	3.7%	58	5.8%	69	5.3%
	4	21	7.0%	54	5.4%	75	5.8%
	5	100	33.2%	221	22.1%	321	24.7%
	6	169	56.1%	668	66.7%	837	64.3%