Table 1.

Clinical relevance of PGK1 expression in lung cancer.

Characteristics	PGK1 expression, n (%)
	n	Low (n = 59)	High (n = 48)	P value
Age
<65 y  ≧65 y	56 51	31(55.4) 28(54.9)	25(44.6) 23(45.1)	0.558
Sex
Male	48	30(62.5)	18(37.5)	0.118
Female	59	29(49.2)	30(50.8)
Smoking status
No	40	22(55.0)	18(45.0)	0.570
Yes	67	37(55.2)	30(44.8)
Histological type
Adenocarcinoma	65	35(53.8)	30(46.2)	0.669
Squamous carcinoma	35	19(54.3)	16(45.7)
Large cell carcinoma	7	5(71.4)	2(28.6)
Stagea
I + II	46	30(65.2)	12(30.0)	0.052
III + IV	61	29(47.5)	26(46.4)
Tumor status
T1 + T2	75	41(54.7)	34(45.3)	0.526
T3 + T4	32	18(56.3)	14(43.7)
Lymph node status
N0	38	27(71.1)	11(28.9)	0.012*
N1-3	69	32(46.4)	37(53.6)
Distal metastasis status
M0	79	45(57.0)	34(43.0)	0.338
M1	28	14(50.0)	14(50.0)

SD standard deviation.

^*p value < 0.05 was considered statistically significant (Student’s t test for continuous variables and Pearson’s chi-square test for variables).

^aThe tumor stage, tumor, lymph node, and distal metastasis status were classified according to the international system for staging lung cancer.