Table 3. Complication rates grouped by COPD status.
| Variables | COPD | No COPD | Unadjusted analyses | Adjusted analyses | ||||
|---|---|---|---|---|---|---|---|---|
| p | ORs | 95% CIs | p | AORs* | 95% CIs | |||
| Total participantsa | 500 | 455 | ||||||
| Post-operative complications | 267 (59.7) | 180 (40.3) | 0.000 | 1.75 | 1.35–2.26 | 0.002 | 1.53 | 1.17–2.01 |
| Pulmonary complications | 159 (65.4) | 84 (34.6) | 0.000 | 2.06 | 1.52–2.79 | 0.001 | 1.76 | 1.02–2.41 |
| Atelectasis | 22 (56.4) | 17 (43.6) | 0.866 | 0.92 | 0.37–2.31 | 0.890 | 0.93 | 0.35–2.51 |
| Sputum retention | 34 (77.3) | 10 (22.7) | 0.010 | 3.25 | 1.30–8.13 | 0.006 | 3.93 | 1.49–10.4 |
| Pneumonia | 44 (68.8) | 20 (31.3) | 0.140 | 1.87 | 0.81–4.31 | 0.096 | 2.21 | 0.87–5.63 |
| ARDS | 4 (50.0) | 4 (50.0) | 0.706 | 0.75 | 0.17–3.35 | 0.637 | 0.69 | 0.15–3.22 |
| Respiratory failure | 28 (77.8) | 8 (22.2) | 0.033 | 2.83 | 1.07–7.49 | 0.029 | 3.21 | 1.13–9.12 |
| Air leak | 72 (66.1) | 37 (33.9) | 0.155 | 1.82 | 0.79–4.16 | 0.027 | 2.85 | 1.12–7.20 |
| Empyema | 7 (63.6) | 4 (36.4) | 0.823 | 1.17 | 0.30–4.51 | 0.901 | 0.90 | 0.18–4.43 |
| Length of stay, Mean (±SD) | 10.3 (7.4) | 9.0 (6.9) | 0.006 | Mean difference (-1.29) | (-2.21) to (-0.38) | |||
OR: Odds Ratio, AOR: Adjusted Odds Ratio, 95% CI: 95% Confidence Interval, ARDS: Acute respiratory distress syndrome.
* Adjusted for: age, gender and BMI.
a: Lung function was not recorded in 58 patients; hence they were excluded from the COPD status vs. complications analysis.