Table 3.

Hereditary forms of CRC in two age groups.

Variable	Total (n = 449)	Early-onset (n = 112)	Late-onset (n = 337)	P Value†
HNPCC	21(4.7%)	12(10.7%)	9(2.9%)	<0.001
HCRC	15(3.4%)	9(8%)	6(1.7%)	<0.001
One first-degree relative with CRC	26(5.8%)	7(6%)	19(5.6%)	NS††

†Assigns the significance of the differences between two group

†† NS: Not significant