Table 1
| COPD pre | COPD post | p value | Control | p value | p value | |
|---|---|---|---|---|---|---|
| (pre–post COPD) | (COPD pre–Control | (COPD post–Control | ||||
| CE at 4th intercostal level (median, cm) | 3.05 | 4.34 | p<0.01 | 4.81 | p<0.01 | p>0.05 |
| CE at xiphoid process (median, cm) | 2.25 | 3.15 | p<0.01 | 3.9 | p<0.01 | p>0.05 |