Table 1. Characteristics of 210 patients.
| Characteristics | Value |
|---|---|
| Age (years) | 59 [53–67] |
| Gender | |
| Male | 132 (62.9) |
| Female | 78 (37.1) |
| Smoking status | |
| Never | 120 (57.1) |
| Current or former | 90 (42.9) |
| American Joint Committee on Cancer (AJCC) stage | |
| I | 46 (21.9) |
| II | 12 (5.7) |
| III | 35 (16.7) |
| IV | 117 (55.7) |
| Sampling procedures | |
| Surgery | 82 (39.0) |
| Bronchoscopic biopsy | 70 (33.3) |
| Ultrasound/CT-guided biopsy | 26 (12.4) |
| Medical thoracoscopy | 15 (7.1) |
| Lymph node biopsy | 7 (3.3) |
| Pleural effusion cell blocks | 1 (0.5) |
| Other procedures | 9 (4.3) |
| Tumor histology | |
| Adenocarcinoma | 161 (76.7) |
| Squamous cell carcinoma | 34 (16.2) |
| Adenosquamous cell carcinoma | 5 (2.4) |
| Large cell carcinoma | 3 (1.4) |
| Sarcomatoid carcinoma | 2 (0.9) |
| Other NSCLC | 5 (2.4) |
| Tumor grade | |
| Poor | 45 (21.4) |
| Moderate | 53 (25.2) |
| Well | 6 (2.9) |
| Undefined | 106 (50.5) |
| EGFR mutational status | |
| Wild-type | 140 (66.7) |
| Deletion in exon 19 | 31 (14.8) |
| L858R in exon 21 | 35 (16.7) |
| L861Q in exon 21 | 2 (1.0) |
| S768I in exon 20 | 1 (0.5) |
| G719X in exon 18 | 1 (0.5) |
| CEA (ng/mL) | |
| <7 | 116 (55.2) |
| ≥7 | 94 (44.8) |
| Tumor size (cm) | 3.2 [2.1–4.7] |
| SUVmax | 8.5 [4.8–12.9] |
Data are shown as median [range] or number (percentage).