Table 1.
Patient characteristics (N = 78).
| N | (%) | |
|---|---|---|
| Gender | ||
| Female | 47 | 60.3 |
| Male | 31 | 39.7 |
| Age | ||
| Median | 66 | |
| Range | 37 – 90 | |
| Smoking | ||
| Never | 68 | 87.2 |
| Ever | 10 | 12.8 |
| Histology | ||
| Adenocarcinoma | 77 | 98.7 |
| NSCLC–NOS | 1 | 1.3 |
| Staging at initial diagnosis | ||
| I | 6 | 7.7 |
| II | 1 | 1.3 |
| III | 12 | 15.4 |
| IV | 59 | 75.6 |
| EGFR mutation at diagnosis | ||
| Exon 19 deletion | 39 | 50.0 |
| L858R | 30 | 38.5 |
| G719X | 3 | 3.8 |
| L861Q | 2 | 2.6 |
| Exon 19 deletion + T790M | 1 | 1.3 |
| L858R + T790M | 3 | 3.8 |
| Effusion sampling | ||
| 1 time | 54 | 69.2 |
| 2 times | 19 | 24.4 |
| 3 times | 4 | 5.1 |
| 4 times | 1 | 1.3 |
NSCLC–NOS, non–small cell lung cancer–not otherwise specified.