. 2008 Apr 14;99(6):1180–1187. doi: 10.1111/j.1349-7006.2008.00804.x

Table 4.

EGFR mutations at exon 19 and CA‐repeat length in relation to log(EGFR mRNA/β‐actin mRNA) levels

		CA‐repeat length		P ^*
		<17	≥17	P ^*
log(EGFR mRNA/β‐actin mRNA) < median ^†
Mutations at exon19	Present	3	2	0.65
Mutations at exon19	Absent	14	17	0.65
log(EGFR mRNA/β‐actin mRNA) ≥ median
Mutations at exon19	Present	7	1	0.045
Mutations at exon19	Absent	13	17	0.045

The exact P‐value (two‐sided) based on the Pearson χ² test.

^{^†}

Median value of log(EGFR mRNA/β‐actin mRNA) in non‐cancerous tissues = 2.10.

EGFR, epidermal growth factor receptor.