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Table 2 CT characteristics of three age groups of COVID-19 patients

From: Clinical and CT findings of COVID-19: differences among three age groups

Groups

All patients (n = 307)

Age < 40 Y (n = 104)

40 Y ≤ Age <60 Y (n = 137)

60 Y ≤ Age (n = 66)

P1(G1 & G2)

P2(G1 &G3)

P3(G2 &G3)

CT Findings (LW)

 Location

    

<0.001

<0.001

0.240

 One lobe or Two lobes

85 (27.7%)

58 (55.8%)

28 (20.4%)

9 (13.6%)

   

 Multiple lobes

222 (72.3%)

46 (44.2%)

109 (79.6%)

57 (86.4%)

   

 Number

    

<0.001

<0.001

1.000

 One or two

31 (10.1%)

23 (22.1%)

5 (3.6%)

3 (4.5%)

   

 More

276 (89.9%)

81 (77.9%)

132 (96.4%)

63 (95.5%)

   

 Subpleural lesions

289 (94.1%)

90 (86.5%)

135 (98.5%)

64 (97%)

<0.001

0.023

0.830

Shape

 pGGO

276 (89.9%)

99 (95.2%)

123 (89.8%)

54 (81.8%)

0.123

0.005

0.112

 mGGO

191 (62.2%)

60 (57.7%)

85 (62%)

46 (69.7%)

0.494

0.115

0.286

Sign

 Halo sign

254 (82.7%)

86 (82.7%)

114 (83.2%)

54 (81.8%)

0.915

0.884

0.806

 Reversed halo sign

38 (12.4%)

8 (7.7%)

22 (16.1%)

8 (12.1%)

0.051

0.335

0.459

 Crazy paving sign

117 (38.1%)

18 (17.3%)

66 (48.2%)

33 (50%)

<0.001

<0.001

0.808

 Cavity sign

21 (6.8%)

3 (2.9%)

11 (8.3%))

8 (12.1%)

0.091

0.039

0.348

Organizational involvement

 Vascular dilatation

249 (81.1%)

77 (74%)

112 (81.8%)

60 (90.9%)

0.053

0.002

0.089

 Bronchodilatation

146 (47.6%)

38 (36.5%)

69 (50.4%)

39 (59.1%)

0.032

0.004

0.243

CT Findings (MW)

 Pleural thickening*

36 (11.7%)

4 (3.8%)

21 (15.3%)

11 (16.7%)

0.004

0.004

0.806

 Pleural effusion*

15 (4.9%)

4 (3.8%)

6 (4.4%)

5 (7.6%)

1.000

0.480

0.541

 Lymphadenectasis

13 (4.2%)

3 (2.9%)

5 (3.6%)

5 (7.6%)

1.000

0.300

0.144

  1. Note: G1 Age<40 Y, G2 40 Y ≤ Age<60 Y, G3 60 Y ≤ Age, LW lung window, MW mediastinal window, pGGO pure ground-glass opacity, mGGO mixed ground-glass opacity, * All but one patients had mild pleural thickening or a little effusion (the only one case had moderate pleural effusion)