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Comparison between case and control subjects regarding spirometric variables
| Variables | Case N=84 | Control Smoker N=40 | Control Non-smoker N=45 | P-value |
|---|---|---|---|---|
| FEV1 (L) | 1.62±0.75 | 2.84±0.54 | 2.83±0.56 | <0.001 |
| FEV1/FVC (%) | 62.11±7.63 | 79.2±4.78 | 79.93±4.48 | <0.001 |
