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Table 4 Imaging characteristics of patients with COVID-19

From: Clinical and imaging findings of discharged patients with SARS-CoV-2 positive anal swab samples: a descriptive study

 

Total (N = 31)

Positive (n = 4)

Negative (n = 27)

P Value a

First CT, negative, (%)

3(9.7%)

1(25.0%)

2(7.4%)

0.349

First CT, positive, (%)

28(90.3%)

3(75.0%)

25(92.6%)

 

Number of involved segments

9.3 ± 6.1

11 ± 8.9

9.1 ± 5.9

0.726

Involvement, (%)

 Single lobe

5(17.9%)

1(33.3%)

4(16.0%)

0.459

 Bilateral lobe

23(82.1%)

2(66.7%)

21(84.0%)

 

Distribution, (%)

 Central

0

0

0

 Peripheral

15(53.6%)

1(33.3%)

14(56.0%)

0.583

 Central + Peripheral

13(46.4%)

2(66.7%)

11(44.0%)

 

Degree, (%)

 Single lesion

4(14.3%)

1(33.3%)

3(12.0%)

0.217

 Multiple lesions

13(46.4%)

0(0.0%)

13(52.0%)

 

 Diffuse lesions

11(39.3%)

2(66.7%)

9(36.0%)

 

Imaging Features, (%)

 GGO

27(96.4%)

1(66.7%)

25(100.0%)

0.107

 Consolidation

19(67.9%)

3(100.0%)

16(64.0%)

0.530

 Linear opacities

19(67.9%)

2(66.7%)

17(68.0%)

1.000

 Mixed type

22(78.6%)

2(66.7%)

20(80.0%)

0.530

Interstitial change

 Interlobular septal thickening

3(10.7%)

1(3.3%)

2(8.0%)

0.298

 Intralobular interstitial thickening

21(75.0%)

2(66.7%)

19(76.0%)

1.000

Other signs, (%)

 Nodule

8(28.6%)

1(33.3%)

7(28.0%)

1.000

 Dilatation of vessels

26(92.9%)

2(66.7%)

24(96.0%)

0.206

 Bronchial wall thickening

13(46.4%)

2(66.7%)

11(44.0%)

0.583

 Air bronchogram

5(17.9%)

0(0.0%)

5(20.0%)

1.000

Crazy-paving pattern

3(10.7%)

0(0.0%)

3(12.0%)

1.000

 Halo sign

7(25.0%)

1(33.3%)

6(24.0%)

1.000

 Reversed halo sign

0(0.0%)

0(0.0%)

0(0.0%)

Pleural thickening

4(14.3%)

0(0.0%)

4(16.0%)

1.000

 Hydrothorax

0(0.0%)

0(0.0%)

0(0.0%)

Lymphadenectasis

0(0.0%)

0(0.0%)

0(0.0%)

CT scores

 On admission

7.7 ± 4.6

10.3 ± 8.3

7.4 ± 4.1

0.532

 On discharge

5.6 ± 3.5

8.0 ± 7.2

5.3 ± 2.9

0.433

 After discharge

4.4 ± 2.7

8.5 ± 2.1

3.8 ± 2.2

0.038

  1. aP values indicate differences between anal swab test positive and negative patients. P < .05 was considered statistically significant