BMI | LAA% | WA% | ||||
ρ | p Value | ρ | p Value | ρ | p Value | |
Age (years) | 0.040 | 0.5721 | 0.050 | 0.4813 | −0.022 | 0.7802 |
Smoking Index (pack-years) | −0.027 | 0.0701 | 0.092 | 0.1940 | −0.012 | 0.8772 |
Height (cm) | − | − | 0.092 | 0.1958 | −0.225 | 0.0037 |
Weight (kg) | − | − | −0.456 | <0.0001 | −0.017 | 0.8255 |
BSA (m2) | − | − | −0.266 | 0.0001 | −0.094 | 0.2303 |
FEV1 (l/s) | 0.280 | <0.0001 | −0.318 | <0.0001 | −0.164 | 0.0356 |
FEV1 (%predicted) | 0.315 | <0.0001 | −0.306 | <0.0001 | −0.176 | 0.0241 |
FEV1/FVC (%) | 0.384 | <0.0001 | −0.495 | <0.0001 | −0.009 | 0.9098 |
RV/TLC (%) | −0.195 | 0.0057 | 0.170 | 0.0159 | 0.262 | 0.0007 |
Tlco (mmol/min/kPa/l) | 0.337 | <0.0001 | −0.642 | <0.0001 | 0.260 | 0.0007 |
WA% (%) | 0.111 | 0.156 | −0.183 | 0.0019 | − | − |
LAA% (%) | −0.557 | <0.0001 | − | − | − | − |
Smoking Index = (the average number of packs smoked/day (20 cigarettes/pack) × years of smoking).
BMI, body mass index; BSA, body surface area; FVC, forced vital capacity; FEV1, forced expiratory volume in 1 s; LAA%, percentage of low attenuation area; RV, residual volume; TLC, total lung capacity; Tlco, carbon monoxide transfer coefficient, bold text indicate significant correlations; WA%, percentage of wall area.