Table 2. Annual changes in lung function and computed tomography parameters in current and former smokers (n = 53).
| Former (n = 31) | Current (n = 22) | p † | |||
| FEV1, mL | −40.0 | (−83.7, −12.6) | −74.5 | (−83.8, −21.4) | 0.27 |
| p* | 0.001 | <0.0001 | |||
| LAA% | 0.37 | (−0.37, 0.93) | 1.03 | (0.67, 1.5) | 0.008 |
| p * | 0.07 | 0.0002 | |||
| LogLAA% | 0.01 | (0.01, 0.02) | 0.02 | (−0.01, 0.02) | 0.007 |
| p * | 0.07 | 0.0007 | |||
| D | −0.01 | (−0.04, 0) | −0.045 | (−0.09, −0.018) | 0.004 |
| p* | 0.0006 | <0.0001 | |||
| LAN | 1.1 | (−3.1, 12.0) | 13.9 | (4.1, 15.8) | 0.007 |
| p* | 0.29 | <0.0001 | |||
| CT-TLV, mL | 42.9 | (−87.0, 83.8) | 30.5 | (−41.2, 96.2) | 0.75 |
| p* | 0.70 | 0.48 | |||
p* intra-group;
p † inter-group. Data are expressed as medians (25th and 75th percentiles). Abbreviations: CT-TLV, total lung volume measured by computed tomography; Current, current smokers; D, index of low attenuation cluster analysis; FEV1, forced expiratory volume in one second; Former, former smokers; LAA%, ratio (%) of low attenuation area; LAN; number of low attenuation clusters.