Table 1.
Population Characteristics
| Characteristics | N = 111 No (%) | Statistics |
|---|---|---|
| Age (years) | ||
| Mean | 56.8±11.5 | |
| Range | 21-76 | |
| Gender | ||
| Male | 78 | 70.27% |
| Female | 33 | 29.73% |
| ECOG performance satus score | ||
| 0 | 8 | 7.21% |
| 1 | 62 | 55.86% |
| 2 | 41 | 36.94% |
| Histologic diagnosis | ||
| Adenocarcinoma | 45 | 40.54% |
| Squamous cell carcinoma | 45 | 40.54% |
| Others | 21 | 18.92% |
| Smoking status | ||
| Previous or current smoker | 63 | 56.76% |
| Never smoked | 48 | 43.24% |
| Clinical stage | ||
| IIIB | 45 | 40.54% |
| IV | 66 | 59.46% |
| Type of EGFR mutation | 12 (Adenocarcinoma) | |
| EXON 19 deletion | 9 | 75.00% |
| EXON 21 (L858R) | 3 | 25.00% |
| Others | 0 | 0 |
Note: Tumor stage based on tumor-node-metastasis classification advocated by International Union against Cancer. Abbreviations: EGFR, epidermal growth factor receptor; HER, human epidermal growth factor receptor; n, number.