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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