Table 4.
Comparison of demographic characteristics, PFTs, and corresponding CT measurements between the patients with and without AECOPD
| Characteristic | AECOPD (n=79) |
Non-AECOPD (n=74) |
P-value |
|---|---|---|---|
| Age (years) | 71.15±8.48 | 68.25±11.01 | 0.129 |
| Sex, female | 13 (16.46%) | 26 (35.14%) | <0.001 |
| BMI (kg/m2) | 23.00±3.40 | 23.00±4.10 | 0.234 |
| BSA (m2) | 1.70±0.20 | 1.60±0.20 | 0.760 |
| FEV1/FVC | 57.42±13.82 | 63.57±13.82 | 0.052 |
| FEV1% | 53.92±23.18 | 64.61±25.23 | <0.001 |
| COPD severity | |||
| Mild COPD | 11 (13.92%) | 19 (25.68%) | 0.144 |
| Moderate COPD | 25 (31.65%) | 36 (48.65%) | 0.159 |
| Severe COPD | 43 (54.43%) | 19 (25.68%) | <0.001 |
| %CSA<5 | 0.41±0.13 | 0.68±0.18 | <0.001 |
| %CSA5–10 | 0.20±0.07 | 0.20±0.10 | 0.109 |
Note: Data presented as mean ± SD or n (%).
Abbreviations: AECOPD, acute exacerbation of COPD; BMI, body mass index; BSA, body surface area; COPD, chronic obstructive pulmonary disease; %CSA<5, percentage of total lung area taken up by the cross-sectional area of pulmonary vessels less than 5 mm2; %CSA5–10, percentage of total lung area taken up by the cross-sectional area of pulmonary vessels between 5 and 10 mm2; CT, computed tomography; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; PFT, pulmonary function test.