Table 1. Demographic data and patients’ characteristics.

Characteristics	N = 1,001 NSCLC patients
Age, median (range), years	64 (22–97)
Gender, n (%)
Female	481 (48.1)
Male	520 (51.9)
Smoking status, n (%)
Non-smokers	581 (58.0)
Smokers	420 (42.0)
Histological types, n (%)
Adenocarcinoma	791 (79.0)
Non-adenocarcinoma#	210 (21.0)
Tumor stage, n (%)
Stage I-III	452 (45.2)
Stage IV	549 (54.8)

NSCLC, non-small cell lung cancer.

*Includes patients with adenocarcinoma mixed with other histological types.