Table 4.

Biannual Percent Change in Age-Specific CRC Incidence Rates, by Gender, Pooled Across Caucasians, African Americans, Hispanics, and Asian/Pacific Islanders, California Cancer Registry, 1988–2009

Gender	Age group	BAPC	p-value	Incident cases	Person-years at risk
Male	20–29	+2.7	<0.011	514	58636525
	30–39	+3.5	<0.001	2487	60805393
	40–49	+2.7	<0.001	8341	51248632
	50–59	−1.0	0.006	19782	35613256
	60–69	−4.4	<0.001	31301	23146945
	70–79	−5.1	<0.001	34252	15140018
	≥80	−7.1	<0.001	20159	7035989
Female	20–29	+3.8	<0.008	438	53314710
	30–39	+4.5	<0.001	2178	57753130
	40–49	+2.6	<0.001	7262	51006233
	50–59	−1.4	0.025	15128	37137748
	60–69	−3.6	0.001	23932	26330944
	70–79	−4.0	0.001	33256	19788963
	≥80	−5.5	0.001	32514	12868523

Note. BAPC is rounded to the nearest tenth; probabilities are rounded to three places, with a floor of 0.001.

Note. Probabilities given for the BAPC are from tests that the slope of the regression line is zero.

BAPC, biannual percent change; CRC, colorectal cancer.