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| Variable | Cases (n = 67) COPD | Controls (n = 67) Smokers, non-COPD | P |
|---|---|---|---|
| IMT, mm | 0·81 ± 0·23 | 0·75 ± 0·19 | 0·08 |
| PI | 1·77 ± 0·49 | 1·70 ± 0·50 | 0·40 |
| RI | 0·72 ± 0·11 | 0·71 ± 0·06 | 0·69 |
| Carotid plaques, n, % | 37 (55·2%) | 31 (46·2%) | 0·38 |
IMT: intima media thickness; PI: pulsatility index; RI: resistance index.
