Table 2 The CT changes, CT pattern, CT severity score, complications, and oxygen saturation that occurred during different stage of the COVID-19 course

Number of the patients

82

67

71

73

GGO

52 (63.4%) a

59 (88.1%) b

60 (84.5%) b

57 (78.1%) ab

#0.001*

Crazy paving

15 (18.3%) ab

21 (31.3%) ab

23 (32.4%) a

10 (13.7%) b

#0.014*

Consolidation

14 (17.1%) a

27 (40.3%) b

45 (63.4%) c

13 (17.8%) a

# < 0.001*

Fibrosis

0 (0.0%) a

8 (11.9%) b

24 (33.8%) c

32 (43.8%) c

# < 0.001*

 Pure GGO

39 (47.6%) abc

34 (50.7%) c

20 (28.2%) b

46 (63.0%) ac

§ < 0.001*

 Consolidation

1 (1.2%) a

1 (1.5%) a

5 (7.0%) a

2 (2.7%) a

 Mixed

13 (15.9%) a

25 (37.3%) b

40 (56.3%) b

11 (15.1%) a

 Negative

29 (35.4%) a

7 (10.4%) b

6 (8.5%) b

14 (19.2%) ab

 Predominant GGO

6 (46.2%)

13 (52.0%)

9 (22.5%)

5 (45.5%)

§0.069

 Predominant Consolidation

7 (53.8%)

12 (48.0%)

31 (77.5%)

6 (54.5%)

Complications

3 (3.7%) a

3 (4.5%) a

19 (27.1%) b

3 (4.1%) a

# < 0.001*

 Hypoxia

3 (3.7%) ab

3 (4.5%) ab

11 (15.7%) a

1 (1.4%) b

§0.004*

 Pl. effusion

0 (0.0%) a

0 (0.0%) a

13 (18.6%) b

2 (2.7%) a

§ < 0.001*

 Resp. distress

0 (0.0%)

0 (0.0%)

2 (2.9%)

0 (0.0%)

§0.105

 Pneumothorax

0 (0.0%)

0 (0.0%)

1 (1.4%)

0 (0.0%)

§0.469

Number of the lobes affected

2.0 ± 1.9 a

3.3 ± 1.7 bc

3.8 ± 1.6 c

2.7 ± 1.8 ab

^< 0.001*

CT severity score

2.4 ± 3.0 a

5.2 ± 3.8 b

7.1 ± 5.1 c

3.7±3.5 ab

^< 0.001*

Oxygen saturation SpO₂ %

96.8 ± 2.2 a

96.3 ± 2.0 a

93.9 ± 3.7 b

96.6±1.9 a

^< 0.001*