Table 1.

Patient demographics and baseline characteristics (n = 88)

Characteristics	Number of cases (%)
Age (years)
≥ 60	51 (58.0%)
< 60	37 (42.0%)
Sex
Male	37 (42.0%)
Female	51 (58.0%)
Histological types
Lung adenocarcinoma	86 (97.7%)
Squamous cell carcinoma of lung	2 (2.3%)
EGFR mutation status
19del	34 (38.6%)
L858R	48 (54.6%)
Other	6 (6.8%)
Staging
IIIB	2 (2.3%)
IV	86 (97.7%)
Smoking history
Yes	21 (23.9%)
No	67 (76.1%)
Metastasis sites
Lungs	44 (50.0%)
Liver	7 (8.0%)
Bone	48 (61.6%)
Brain	17 (19.3%)
Pleura	26 (29.5%)
Other	5 (5.7%)