Lung function variable | Cannabis association per joint-year OR (95% CI) | Tobacco association per pack-year OR (95% CI) |
FEV1/FVC ratio | –0.019 (–0.033 to –0.0048) | –0.15 (–0.20 to –0.096) |
sGaw (/s.kPa) | –0.0017 (–0.0026 to –0.0009) | –0.007 (–0.01 to –0.004) |
FRC (l) | 0.0013 (–0.00013 to 0.0027) | 0.0057 (0.0005 to 0.0109) |
TLC (l) | 0.002 (0.0004 to 0.004) | –0.0006 (–0.006 to 0.005) |
FEV1, forced expiratory volume in 1 s; FRC, functional residual capacity; FVC, forced vital capacity; sGaw, specific airways conductance; TLC, total lung capacity.