Table 4. Multivariate analysis: risk factors for postoperative respiratory-related complications.
| Factors | OR | 95% CI | p | ||
|---|---|---|---|---|---|
| Age | ≤59 yr | 60–69 yr | 2.834 | 1.403–5.730 | 0.0037 |
| 70–79 yr | 3.541 | 1.767–7.105 | 0.0004 | ||
| 80 yr ≤ | 4.307 | 2.049–9.050 | 0.0001 | ||
| Sex | Female | Male | 1.545 | 0.892–2.675 | 0.1195 |
| Smoking volume (pack-years) | 0 | 1–9 | 1.359 | 0.498–3.708 | 0.5486 |
| 10–29 | 1.397 | 0.713–2.735 | 0.3297 | ||
| 30 < | 1.661 | 0.931–2.960 | 0.0850 | ||
| FEV1/FVC | 70% ≤ | <70% | 1.499 | 1.091–2.060 | 0.0124 |
| BMI | Normal | Low (<18.5 kg/m2) | 2.026 | 1.298–3.161 | 0.0018 |
| High (25 kg/m2 ≤) | 0.655 | 0.439–0.977 | 0.0382 | ||
| Intraoperative bleeding volume | <110 g | 110 g ≤ | 1.682 | 1.184–2.389 | 0.0037 |
| Operation time | <120 min | 120 min ≤ | 1.474 | 1.054–2.061 | 0.0230 |
BMI: body mass index; CI: confidence interval; FEV1/FVC: forced expiratory volume in one second divided by forced vital capacity; OR: odds ratio; yr: years