Dose-response relationship between risk factors and incidence of COVID-19 in 325 hospitalized patients: A multicenter retrospective cohort study

Table 4 Distribution and frequency of the major of lung lesions on computed tomography in different stages defined by the time of onset of symptoms

	Stage-1 (n = 157)	Stage-2 (n = 194)	Stage-3 (n = 165)	Stage-4 (n = 211)	Stage-5 (n = 204)	Stage-6 (n = 137)
Distribution of pulmonary lesions
No lesion	12/157	1/194	0/165	1/211	2/204	0/137
Peripheral	60/157	18/194	55/165	105/211	88/204	66/137
Random	85/157	162/194	88/165	75/211	78/204	44/137
Diffuse	0/157	13/194	22/165	30/211	36/204	27/137
Involvement of the lesions
No involvement	12/157	0/194	0/165	0/211	0/204	0/137
Single lobe	48/157	18/194	11/165	30/211	22/204	11/137
Bilateral multilobe
GGO	96/157	180/194	154/165	180/211	176/204	121/137
None	24/157	0/194	22/165	30/211	47/204	49/137
Yes	133/157	194/194	143/165	181/211	157/204	88/137
Crazy-paving pattern
None	120/157	104/194	110/165	180/211	183/204	126/137
Yes	36/157	90/194	55/165	31/211	121/204	11/137
Consolidation
None	157/157	140/194	88/165	105/211	102/204	89/137
Yes	0/157	54/194	77/165	105/211	102/204	48/137
Fibrosis
None	157/157	180/194	143/165	150/211	102/204	37/137
Yes	0/157	14/194	22/165	61/211	102/204	100/137

The counting data were presented as count (percentage of the total). GGO: Ground glass opacity.