Table 3 Comparison of follow up CT findings and scores between groups.
From: Quantitative inspiratory–expiratory chest CT findings in COVID-19 survivors at the 6-month follow-up
Characteristics | All patients (n = 205) | Group 1 (n = 88) | Group 2 (n = 117) | p value |
|---|---|---|---|---|
Time from symptoms onset to CT scan (days) | 200 ± 20 | 202 ± 23 | 198 ± 17 | 0.173 |
Complete radiological resolution | 99/205 (48%) | 30/88 (34%) | 69/117 (59%) | < 0.001 |
Air trapping | 27/99 (27%) | 9/30 (30%) | 18/69 (26%) | 1.000 |
Lung involvement | 0.002 | |||
Unilateral | 4/205 (2%) | 2/88 (2.3%) | 2/117 (1.7%) | |
Bilateral | 102/205 (50%) | 56/88 (63.6%) | 46/117 (39.3%) | |
Normal | 99/205 (48%) | 30/88 (34.1%) | 69/117 (59%) | |
Predominant CT pattern | 0.003 | |||
GGO | 58/205 (28%) | 30/88 (34.1%) | 28/117 (23.9%) | |
Consolidation | 3/205 (1.5%) | 1/88 (1.1%) | 2/117 (1.7%) | |
Reticulation | 45/205 (22%) | 27/88 (30.7%) | 18/117 (15.4%) | |
Normal | 99/205 (48.3%) | 30/88 (34.1%) | 69/117 (59%) | |
Presence of nodule or mass | 15/205 (7.3%) | 7/88 (8%) | 8/117 (6.8%) | 0.761 |
Thickening of the adjacent pleura | 40/205 (19.5%) | 22/88 (25%) | 18/117 (15.4%) | 0.086 |
Honeycombing | 7/205 (3.4%) | 6/88 (5%) | 1/117 (0.9%) | 0.020 |
Bronchiectasis | 28/205 (13.7%) | 16/88 (18.2%) | 12/117 (10.3%) | 0.102 |
CT score | ||||
Total lesions | 3 ± 4 | 4 ± 5 | 3 ± 4 | 0.007 |
GGO | 2 ± 4 | 3 ± 4 | 1 ± 3 | 0.023 |
Consolidation | 0 ± 1 | 0 ± 1 | 0 ± 0 | 0.098 |
Reticular | 2 ± 2 | 2 ± 3 | 1 ± 2 | 0.015 |
Air-trapping | 3 ± 5 | 4 ± 6 | 2 ± 3 | < 0.001 |
Quantitative CT parameters | ||||
Whole lung | ||||
RVC | − 0.23 ± 0.10 | − 0.20 ± 0.08 | − 0.25 ± 0.10 | < 0.001 |
E/I | 0.87 ± 0.07 | 0.87 ± 0.07 | 0.86 ± 0.06 | 0.458 |
Right lung | ||||
RVC | − 0.23 ± 0.09 | − 0.19 ± 0.08 | − 0.25 ± 0.10 | < 0.001 |
E/I | 0.87 ± 0.06 | 0.87 ± 0.07 | 0.87 ± 0.05 | 0.414 |
Left lung | ||||
RVC | − 0.24 ± 0.10 | − 0.20 ± 0.09 | − 0.26 ± 0.10 | < 0.001 |
E/I | 0.86 ± 0.07 | 0.86 ± 0.08 | 0.85 ± 0.07 | 0.565 |
