Table 2. Correlation between EGFR expression and EGFR FISH^a results.

EGFR expression	EGFR FISH			P value
	case	Negative	Positive
0	2	2	0	0.003b
1+	13	13	0
2+	83	69	14
3+	95	62	33

^aFluorescence In Situ Hybridization

^bTested by Fisher's exact test