Table 3.
Longitudinal changes of WA%, %CSA <5, and LAA% in the patients with current smoking, and smoking cessation
| Variables | Baseline, mean (±SD) | Follow-up, mean (±SD) | P-value |
|---|---|---|---|
| Current smokers | |||
| WA% | |||
| Third | 72.7±7.1 | 72.8±5.9 | NS |
| Fourth | 79.8±6.5 | 78.5±4.1 | NS |
| Fifth | 83.3±4.6 | 82.2±4.3 | NS |
| %CSA <5 | 0.73±0.18 | 0.72±0.21 | NS |
| LAA% | 5.7±8.8 | 8.9±12.0 | 0.001 |
| Ex-smokers | |||
| WA% | |||
| Third | 71.8±5.5 | 70.4±4.0 | 0.092 |
| Fourth | 79.0±5.0 | 77.1±5.4 | 0.016 |
| Fifth | 84.2±3.0 | 81.9±4.4 | <0.001 |
| %CSA <5 | 0.71±0.19 | 0.78±0.21 | <0.001 |
| LAA% | 7.6±11.0 | 9.3±12.0 | <0.001 |
Abbreviations: CSA <5, the cross-sectional area of pulmonary vessels <5 mm2; LAA, low-attenuation area; NS, not significant; SD, standard deviation; WA%, wall area percentage.