Table S1.
Multivariable analysis of predictors for minor morbidity (Clavien-Dindo Grade II complications)a
| Estimated factors | Odds ratio | 95% CI | P-value |
|---|---|---|---|
| Age (year) (per 1-year increase) | 1.006 | 0.98–1.03 | 0.59 |
| Gender (male vs female) | 1.25 | 0.81–1.93 | 0.32 |
| FEV1% (per unit decrease) | 1.01 | 0.999–1.03 | 0.064 |
| FEV1/FVC (%) (per unit decrease) | 1.005 | 0.98–1.03 | 0.68 |
| Systemic inflammation score (2 vs 0-1) | 1.79 | 1.15–2.80 | 0.011 |
| Neutrophil-to-lymphocyte ratio (per unit increase) | 0.98 | 0.88–1.10 | 0.72 |
| Platelet-to-lymphocyte ratio (per unit increase) | 1.001 | 0.997–1.006 | 0.51 |
| Smoking history | 1.40 | 0.89–2.22 | 0.14 |
| Respiratory comorbidity | 1.99 | 1.44–2.76 | <0.001 |
| Cardio-cerebrovascular comorbidity | 1.08 | 0.77–1.52 | 0.66 |
| Right upper lobectomy | 1.46 | 1.05–2.01 | 0.024 |
| Pulmonary fissure completeness (incomplete vs complete) | 1.66 | 1.21–2.28 | 0.002 |
| Dense pleural adhesion (present vs absent) | 1.31 | 0.76–2.27 | 0.33 |
| Operation time (mins) (per 10 mins increase) | 1.01 | 1.009–1.02 | <0.001 |
| Estimated intraoperative blood loss (mL) (per 10 mL increase) | 1.003 | 1.000–1.005 | 0.018 |
| Tumor invasion (T2-3 vs T1) | 1.004 | 0.72–1.39 | 0.98 |
| Lymph node metastasis | 1.51 | 0.80–2.84 | 0.20 |
Notes: aThe multivariable logistic-regression model was established based on 284 patients with minor morbidity and 706 patients without any morbidity to identify the risk factors for minor morbidity. The data for major morbidity (Clavien-Dindo Grade ≥III complications) were excluded. This multivariable logistic-regression model got a Hosmer–Lemeshow P=0.13 and a C-statistic of 0.75 (95% CI: 0.72-0.79; P<0.001). FEV1/FVC, FEV1 to FVC ratio.