Table 2. Gender, age, and tumor location distribution of cases used in KRAS and BRAF mutation analysis.

	Characteristics	KRAS mutation analysis				BRAF mutation analysis
		n	mut+	%	p-value	n	mut+	%	p-value
Gender	Male	106	48	45.3	0.448a	58	4	6.9	1.000a
	Female	72	37	51.4		35	2	5.7
Age	≤70	149	66	44.3	0.036b	83	6	7.3	1.000a
	>70	29	19	65.5		10	0	0.0
Tumor location	Colorectal tissues	146	65	44.5	0.065b	81	5	6.2	0.574a
	Metastatic tissues	32	20	62.5		12	1	8.3

^aFisher’s exact test

^bChi-squared test