Table I.

Association between IL-6 expression and clinicopathological features of the patients with lung adenocarcinoma (N=128).

	IL-6 expression
Clinical parameters	Lowa, n	Highb, n	P-value
Sex			0.214
Male	24	52
Female	22	30
Age, years			0.691
<60	23	44
≥60	23	38
TNM stage			0.007d
I	19	17
II	14	19
III	13	46
Lymph node metastasis			0.013c
N0	23	23
N1/N2/N3	23	59

^aSamples with scores of 0-3 were classified as having low IL-6 expression.

^bSamples with scores of 4-8 were classified as having high IL-6 expression.

^cP<0.05

^dP<0.01 represent a significant difference. IL-6, interleukin 6.