Table 4. Univariate and multivariate analysis of risk factors for postoperative complications.
| Variable | Category | OR | 95% CI | P value |
|---|---|---|---|---|
| Univariate | ||||
| Gender | Male | 0.69 | 0.43-1.11 | 0.13 |
| Smoking | Yes | 1.55 | 1.04-2.30 | 0.032 |
| Previous thoracic surgery | Yes | 0.6 | 0.06-5.84 | 1 |
| Hypertension | Yes | 1.26 | 0.86-1.86 | 0.24 |
| Coronary artery disease | Yes | 1.39 | 0.87-2.22 | 0.17 |
| Diabetes mellitus | Yes | 0.96 | 0.56-1.65 | 0.89 |
| History of CVA/TIA | Yes | 1.32 | 0.57-3.03 | 0.52 |
| COPD | Yes | 1.27 | 0.72-2.23 | 0.42 |
| FEV1% | <70/≥70 | 0.93 | 0.63-1.37 | 0.72 |
| BMI | ≥30/<30 | 1.14 | 0.51-2.58 | 0.75 |
| ASA | 3-4/1-2 | 1.27 | 0.86-1.86 | 0.23 |
| CCI | 3-4/0-2 | 29 | 6.80-123.62 | <0.001 |
| Pathologic stage | III-IV/I-II | 0.86 | 0.57-1.31 | 0.48 |
| Pneumonectomy | Yes | 2.3 | 1.15-4.61 | 0.016 |
| Duration of surgery, min | ≥180/<180 | 1.89 | 1.24-2.86 | 0.003 |
| Multivariate | ||||
| Gender | Male | 0.8 | 0.45-1.43 | 0.45 |
| Smoking | Yes | 1.38 | 0.89-2.21 | 0.19 |
| Coronary artery disease | Yes | 1.25 | 0.74-2.11 | 0.41 |
| CCI | 3-4/0-2 | 29.95 | 6.91-129.88 | <0.001 |
| Pneumonectomy | Yes | 2.26 | 1.09-4.71 | 0.029 |
| Duration of surgery, min | ≥180/<180 | 1.93 | 1.24-3.00 | 0.003 |
OR, odds ratio; CI, confidence interval; CVA, cerebrovascular disease; TIA, transient ischemic attack; COPD, chronic obstructive pulmonary disease; FEV1%, forced expiratory volume as a percentage of forced vital capacity.