Table 1. Characteristics of all patients whose tumours were analysed for EGFR mutations.
| Characteristics | No. of patients (%) |
|---|---|
| Total no. of patients | 82 |
| Age (years) | |
| Median | 65 |
| Range | 36–83 |
| Sex | |
| Male | 33 (40) |
| Female | 49 (60) |
| Histology | |
| Adenocarcinoma | 72 (87) |
| Squamous cell carcinoma | 4 (5) |
| Large cell carcinoma | 3 (4) |
| Other | 3 (4) |
| Smoking history | |
| Current | 28 (34) |
| Former | 16 (20) |
| Never | 38 (46) |
| Tissue obtained by | |
| Surgery | 30 (36) |
| Transbronchial biopsy | 44 (54) |
| Other biopsies | 8 (10) |
Abbreviation: EGFR=epidermal growth factor receptor.