Table 1.
Patient characteristics
| Characteristic | No. of patients (n=40) |
|---|---|
| Age at diagnosis (yr) | |
| Median | 71 (42-94) |
| Sex | |
| Male | 15 (37.5) |
| Female | 25 (62.5) |
| ECOG performance status | |
| 0 | 3 (7.5) |
| 1 | 36 (90.0) |
| 2 | 1 (2.5) |
| Smoking history | |
| Never smoker | 25 (62.5) |
| Former and current smoker | 11 (27.5) |
| Unknown | 4 (10.0) |
| Size of the pleural effusion | |
| Small | 13 (32.5) |
| Moderate | 11 (27.5) |
| Large | 8 (20.0) |
| Massive | 8 (20.0) |
| EGFR TKI therapy | |
| 1st line | 27 (67.5) |
| 2nd line | 11 (27.5) |
| ≥ 3rd line | 2 (5.0) |
| Generation EGFR TKI | |
| 1st | 34 (85.0) |
| 2nd | 4 (10.0) |
| 3rd | 2 (5.0) |
ECOG, Eastern Cooperative Oncology Group; EGFR TKI, epidermal growth factor receptor tyrosine kinase inhibitor.