Table 4. Clinical characteristics comparison between SCLC patients with and without EGFR mutation.
| Clinical characteristics | Detected [6] | Not detected [24] | P |
|---|---|---|---|
| Gender | 0.366 | ||
| Male | 5 | 23 | |
| Female | 1 | 1 | |
| Age (median) | 0.633 | ||
| <65 | 5 | 15 | |
| ≥65 | 1 | 9 | |
| Smoking history | 0.920 | ||
| Non-smoker | 1 | 3 | |
| Light smoker | 0 | 1 | |
| Moderate smoker | 2 | 6 | |
| Heavy smoker | 3 | 14 | |
| Stage | 1.000 | ||
| Extended stage | 4 | 16 | |
| Limited stage | 2 | 8 | |
| CEA abnormal | 1 | 7 | 0.655 |
| 5 | 17 | ||
| SCC abnormal | 1 | 2 | 0.543 |
| 5 | 22 |
SCLC, small cell lung cancer; EGFR, epidermal growth factor receptor; CEA, carcinoembryonic antigen.