Age distribution, polyps and rectal cancer in the Egyptian population-based cancer registry

Table 5 Age standardized incidence rates by gender in Gharbiah, Egypt and the United States Surveillance Epidemiology and End Results Program

	Gharbiah, Egypt 1999-2007			United States SEER 1999-2001			P value
	Total	Male	Female	Total	Male	Female
Total cases	1364	737	627	55 480	27 892	27 588
Total rate	5.5	6.1	4.9	32.0	37.7	27.4	< 0.00011
< 40 yr	1.3	1.4	1.2	1.2	1.3	1.2
40-59 yr	12.0	12.8	11.2	37.9	43.3	32.8
60-69 yr	19.4	22.5	15.8	154.0	185.4	126.4
> 70 yr	21.2	24.4	18.6	311.3	369.8	270.8

¹χ² test of total age standardized incidence rates, by age group, Gharbiah, Egypt 1999-2007 vs United States Surveillance Epidemiology and End Results Program (SEER) 1999-2001.