Table 1.
Patient Characteristics
| Variable | Study Group (N = 115) | No Postoperative COVID-19 (n = 109) | Postoperative COVID-19 (n = 6) | P Value |
|---|---|---|---|---|
| Demographics | ||||
| Age, y | 64.6 ± 10.7 | 64.5 ± 10.9 | 66.0 ± 4.4 | .43 |
| Male sex | 65 (57) | 61 (56) | 4 (67) | .70 |
| BMI, kg/m2 | 24.4 ± 8.0 | 24.3 ± 8.1 | 27.6 ± 5.3 | .20 |
| Smoking history | 99 (86) | 94 (86) | 5 (83) | .99 |
| Active smoking | 33 (29) | 32 (30) | 1 (17) | .67 |
| Extrapulmonary diseases | ||||
| Diabetes | 15 (13) | 13 (12) | 2 (33) | .17 |
| Kidney failure | 4 (3) | 4 (4) | 0 | .99 |
| Ischemic heart disease | 18 (16) | 16 (15) | 2 (33) | .24 |
| Hypertension | 50 (43) | 46 (42) | 4 (67) | .40 |
| ACE inhibitor | 26 (23) | 24 (22) | 2 (33) | .62 |
| History of organ transplantation | 2 (2) | 2 (3) | 0 | .99 |
| Corticosteroid therapy | 6 (5) | 4 (4) | 2 (33) | .03 |
| Immunosuppressive therapy | 7 (6) | 6 (6) | 1 (17) | .32 |
| Respiratory function | ||||
| History of thoracic surgery | 13 (11) | 11 (10) | 2 (33) | .14 |
| COPD | 32 (28) | 30 (28) | 2 (33) | .67 |
| FEV1, %th | 86.5 ± 18.6 | 87.1 ± 18,2 | 76.2 ± 24.9 | .34 |
| TLC, %th | 104.0 ± 17.7 | 103.8 ± 17.7 | 107.3 ± 20.2 | .76 |
| DLCO, %th | 66.5 ± 17.2 | 65.9 ± 17,0 | 74.4 ± 21.3 | .43 |
| Thoracoscore, % | 2.0 ± 1.4 | 2,0 ± 1.4 | 2.77 ± 1.49 | .26 |
Values are presented as mean ± SD or n (%).
ACE, angiotensin-converting enzyme; BMI, body mass index; COPD, chronic obstructive pulmonary disease; DLCO, diffusing capacity of the lung for carbon monoxide; FEV1, forced expiration volume in 1 s; TLC, total lung capacity; %th, % of predicted values.