Table 4.
Multivariate Analysis for Recurrence Free Survival (RFS) and Overall Survival (OS) Rates
| Recurrence Free Survival | Overall Survival | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Before Matching | After Matching | Before Matching | After Matching | |||||||||||||
| Covariate | HR | 95% CI | p value | HR | 95% CI | p value | HR | 95% CI | p value | HR | 95% CI | p value | ||||
| Age, years (continuous) | 1.02 | 1.01 | 1.04 | <0.0001 | 1.04 | 1.02 | 1.06 | <0.0001 | ||||||||
| BMI (continuous) | 0.96 | 0.94 | 0.99 | 0.015 | 0.97 | 0.94 | 1.00 | 0.138 | ||||||||
| Gender (female vs. male) | 0.71 | 0.55 | 0.91 | 0.008 | 0.57 | 0.42 | 0.77 | 0.0003 | ||||||||
| ASA physical status (1-2 vs. 3-4) | 0.58 | 0.35 | 0.95 | 0.138 | 0.63 | 0.35 | 1.15 | 0.138 | ||||||||
| Adenocarcinoma (yes vs. no) | 0.78 | 0.58 | 1.06 | 0.117 | ||||||||||||
| Type of surgery (thoracoscopy vs. thoracotomy) | 0.79 | 0.57 | 1.11 | 0.181 | ||||||||||||
| NLR (< 5 vs. ≥ 5) | 0.58 | 0.38 | 0.97 | 0.009 | 0.48 | 0.30 | 0.76 | 0.0017 | ||||||||
| Preoperative anemia (no vs. yes) | 0.72 | 0.54 | 0.95 | 0.053 | 0.72 | 0.52 | 1.00 | 0.053 | ||||||||
| Blood transfusion (no vs. yes) | 0.69 | 0.47 | 1.02 | 0.066 | 0.630 | 0.35 | 1.1 | 0.108 | 0.63 | 0.40 | 0.98 | 0.044 | 0.52 | 0.26 | 1.04 | 0.066 |
HR = hazard ratio; CI = confidence interval; BMI = body mass index; ASA = American Society of Anesthesiologists; NLR = neutrophil-to-lymphocyte ratio; Hb: hemoglobin.