Table 1. Clinicopathological characteristics of all patients (N = 1,237).
| Factors | Variable/group | Value/no. of patients |
|---|---|---|
| Age (years) | Median | 69 |
| Range | 29–89 | |
| Sex | Female | 581 (47.0%) |
| Male | 656 (53.0%) | |
| Smoking history | Never smoked | 551 (44.5%) |
| Past/present smoker | 686 (55.5%) | |
| Tumor in left or right lung | Left | 486 (39.3%) |
| Right | 751 (60.7%) | |
| Tumor in upper lobe or other | Upper | 688 (55.6%) |
| Others | 549 (44.4%) | |
| Pathological stage | I | 953 (77.0%) |
| II | 167 (13.5%) | |
| III | 117 (9.5%) | |
| Surgical procedure | ≥ Lobectomy | 963 (77.9%) |
| Sublobar resection | 274 (22.1%) | |
| Tumor histology | Sq | 171 (13.8%) |
| Non-Sq | 1,066 (86.2%) | |
| Pl | No | 991 (80.1%) |
| Yes | 246 (19.9%) | |
| Ly | No | 1,120 (90.5%) |
| Yes | 117 (9.5%) | |
| V | No | 987 (79.8%) |
| Yes | 250 (20.2%) | |
| Adjuvant chemotherapy | No | 983 (79.5%) |
| Yes | 254 (20.5%) | |
| EGFR statusa | Wild-type | 267 (54.8%) |
| Mutant-type | 220 (45.2%) | |
| Alb (g/dL) | Mean | 4.2 |
| Range | 2.2–5.3 | |
| CRP (mg/dL) | Mean | 0.38 |
| Range | 0.01–40.7 | |
| LDH (U/L) | Mean | 198 |
| Range | 78–548 | |
| NLR | Mean | 2.46 |
| Range | 0.40–22.83 | |
| LMR | Mean | 5.45 |
| Range | 0.37–20.94 | |
| PLR | Mean | 143 |
| Range | 21–646 | |
| dNLR | Mean | 1.79 |
| Range | 0.23–14.87 |
a Data only available for 487 patients.
Alb, albumin; CRP, C-reactive protein; dNLR, derived neutrophil-lymphocyte ratio; EGFR, epidermal growth factor receptor; LDH, lactate dehydrogenase; LMR, lymphocyte-monocyte ratio; Ly, lymphatic invasion; NLR, neutrophil-lymphocyte ratio; Pl, pleural invasion; PLR, platelet-lymphocyte ratio; Sq, squamous cell carcinoma; V, vascular invasion.