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Table 4 NIV-failed and NIV-successful groups: chest CT scan feature statistical analysis

From: Predictor factors for non-invasive mechanical ventilation failure in severe COVID-19 patients in the intensive care unit: a single-center retrospective study

Variable

Overall (n = 58)

NIV-failed (n = 31)

NIV-successful (n = 27)

p-value

≥ 4 involved lobes (%)

54 (93.1%)

28 (90.3%)

26 (96.3%)

0.3705

Ground-glass opacity (%)

51 (87.9%)

30 (96.8%)

21 (77.8%)

0.0281

Consolidation (%)

43 (74.1%)

21 (67.7%)

22 (81.5%)

0.2373

Lymphoadenopathy (%)

27 (46.6%)

16 (51.6%)

11 (40.7%)

0.4117

Interstitial septum thickening (%)

12 (20.7%)

8 (25.8%)

4 (14.8%)

0.3068

Crazy paving (%)

8 (13.8%)

3 (9.7%)

5 (18.5%)

0.3343

Pneumomediastinum (%)

9 (15.5%)

7 (22.6%)

2 (7.4%)

0.1145

Bronchogram (%)

6 (10.3%)

4 (12.9%)

2 (7.4%)

0.4968

Pleural effusion (%)

8 (13.8%)

3 (9.7%)

5 (18.5%)

0.3343

Emphysema (%)

8 (13.8%)

6 (19.4%)

2 (7.4%)

0.1920

Pneumothorax (%)

5 (8.6%)

3 (9.7%)

2 (7.4%)

0.7607

Cavitation (%)

5 (8.6%)

3 (9.7%)

2 (7.4%)

0.7607

Adjacent pleural thickening (%)

7 (12.1%)

7 (22.6%)

0 (0.0%)

0.0090

Subcutaneous emphysema (%)

6 (10.3%)

6 (19.4%)

0 (0.0%)

0.0167

Pericardial effusion (%)

3 (5.2%)

1 (3.2%)

2 (7.4%)

0.4771

Iodinate contrast (%)

28 (48.3%)

17 (54.8%)

11 (40.7%)

0.2880

Pulmonary thromboembolism (%)

2 (7.1%)

2 (11.8%)

0 (0.0%)

0.2378

  1. The table reports the statistical comparison of chest CT scan features between the groups. Frequencies are expressed as numbers and percentages (%). Differences in frequencies were tested with the chi-square test (α = 0.05) and a p-value < 0.05 was considered statistically significant