Table 3.
The comparison of clinical and CT manifestations during hospitalization between the patients with coronavirus disease 2019 (COVID-19) with normal and abnormal CT findings in the last follow-up scan after discharge.
| All patients (n = 135) | Normal (n = 68) | Abnormal (n = 67) | p -value | |
|---|---|---|---|---|
| Periods | ||||
| Pulmonary Lesion Absorption Period, median (IQR), day | / | 42.50 (34.75–55.25) | / | / |
| Period between discharge and the last follow-up CT scan, median (IQR), day | 29.00 (28.00–54.50) | 28.00 (27.75–32.25) | 33.00 (28.00–62.50) | 0.019* |
| Period between onset and the last follow-up CT scan, median (IQR), day | 57.00 (47.50–76.50) | 53.00 (47.00–65.25) | 60.00 (48.50–87.00) | 0.041* |
| Clinical information | ||||
| Age | 44.15 ± 13.67 | 41.53 ± 13.26 | 46.81 ± 13.66 | 0.024 |
| Gender, male/female | 79/56 | 42/26 | 37/30 | 0.487 |
| Underlying comorbidity yes/no | 41/94 | 21/47 | 20/47 | 1.000 |
| Clinical group: non-severe/severe | 112/23 | 63/5 | 49/18 | 0.003 |
| CT manifestations from the scan at the peak stage † | ||||
| Morphology† | <0.001 | |||
| Nodular | 1 (0.7%) | 1 (1.5%) | 0 (0%) | |
| Large-path | 42 (31.1%) | 12 (17.6%) | 30 (44.8%) | |
| Linear | 8 (5.9%) | 8 (11.8%) | 0 (0%) | |
| Patchy | 84 (62.2%) | 47 (69.1%) | 37 (55.2%) | |
| Extent† | 7.34 ± 4.69 | 6.01 ± 3.73 | 8.69 ± 5.18 | 0.001 |
| CT manifestations from the scan before discharge* | ||||
| Lesion involvement* | 0.001 | |||
| None | 7 (5.2%) | 6 (8.8%) | 1 (1.5%) | |
| Diffuse | 23 (17%) | 5 (7.4%) | 18 (26.9%) | |
| Multifocal | 92 (68.1%) | 47 (69.1%) | 45 (67.2%) | |
| Unifocal | 13 (9.6%) | 10 (14.7%) | 2 (4.5%) | |
| RUL* | 86 (63.7%) | 34 (50%) | 52 (77.6%) | 0.001 |
| RML* | 62 (45.9%) | 21 (30.9%) | 41 (61.2%) | <0.001 |
| Distribution* | 0.001 | |||
| None | 6 (4.4%) | 5 (7.4%) | 1 (1.5%) | |
| Both | 41 (30.4%) | 12 (17.6) | 29 (43.3%) | |
| Subpleural | 88 (65.2%) | 51 (75%) | 37 (55.2%) | |
| Morphology* | ||||
| None | 7 (5.2%) | 6 (8.8%) | 1 (1.5%) | 0.002 |
| Nodular | 1 (0.7%) | 1 (1.5%) | 0 (0%) | |
| Large-patchy | 18 (13.3%) | 3 (4.4%) | 15 (22.4%) | |
| Linear | 3 (2.2%) | 3 (4.4%) | 0 (0%) | |
| Patchy | 106 (78.5%) | 55 (80.9%) | 51 (76.1%) | |
| Reticulation* | 19 (14.1%) | 2 (2.9%) | 17 (25.4%) | 0.005 |
| Extent* | 5.19 ± 4.17 | 3.68 ± 2.46 | 6.72 ± 4.95 | <0.001 |
Pulmonary lesion absorption period: The period from onset to the first CT scan with normal appearance.
In the comparison of CT findings between the two groups, only the imaging manifestations with significant difference were displayed in the table.
†
CT manifestations from the scan at the peak stage.
*
CT manifestations from the scan before discharge.
The p value in bold indicates that P is less than 0.05 and is statistically significant.