Table 2. Clinical characteristics and the expression for EF2 on the tissue microarray of LSCC.

EF2 level	Metastasis	Non-metastasis	Pathological stages			Histological grades
			1	2	3 and 4	Well-differentiated	moderately differentiated	poor differentiated
-	7	2	5	2	2	2	6	1
+	4	5	2	3	4	1	6	2
++	32	25	20	23	14	10	40	7
sum	43	32	27	28	20	13	52	10
Positive rate(%)	83.7	93.8	81.5	92.9	90	84.6	88.5	90.0
χ2	3.724		5.036			1.819
p-value	0.054		0.081			0.403