Table 1.

Baseline characteristics of the patients

Variable	Number	Percent (%)
Age, year
<60	54	51.4%
≥60	51	48.6%
Pathologic subtype
Adenocarcinoma	73	69.5%
Other*	32	30.5%
Gender
Male	82	78.1%
Female	23	21.9%
Smoking
No	38	36.2%
Yes	67	63.8%
T stage
1–2	77	73.3%
3–4	28	26.7%
N stage
Negative	54	51.4%
Positive	51	48.6%
TNM stage
I–II	60	57.1%
III–IV	45	42.9%
Adjuvant chemotherapy
No	49	53.3%
Yes	56	46.7%

*:squamous carcinoma; bronchioloalveolar carcinoma; and adeno-squamous carcinoma.