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Degree of COPD and outcomes in patients with or without POPC in COPD group
| Severity of COPD | POPCs (n = 29) | Non-POPCs (n = 57) | P value |
| FEV1,%predicted | |||
| GradeI(> 80%) | 10 | 35 | < 0.05 |
| GradeIIA (50%-80%) | 13 | 19 | |
| GradeIIB (30%-50%) | 6 | 3 | |
| GradeIII (< 30%) | 0 | 0 | |
POPCs = postoperative pulmonary complications.
