Table 4.

The correlation of EGFR expression and Ki-67 expression of tumor cells

Variables	n	n		χ2	P-value
		Ki-67 low	Ki-67 high
EGFR-tc
Low	103	35	68	1.785	0.182
High	139	59	80
EGFR-ts
Low	149	67	82	6.12	0.013
High	93	27	66

Note: Bold value indicates P<0.05.

Abbreviations: EGFR, epidermal growth factor receptor; EGFR-tc, EGFR expressed in tumor cells; EGFR-ts, EGFR expressed in tumor stroma.