Colon Cancer Stats

I came across some stats while reading on the Colon Club talk. One person asked the breakdown of the age of diagnosis:
Response by:
by r_mark on Mon Feb 23, 2009 3:23 pm(colon club member)

From emedtv.com (http://colon-cancer.emedtv.com/colon-ca ... stics.html)

The median age at colon cancer diagnosis for 2000-2003 was 71 years of age. The percentages of people diagnosed with colon cancer based on age were:

0.0 percent were diagnosed under age 20
0.9 percent between 20 and 34
3.5 percent between 35 and 44
10.9 percent between 45 and 54
17.6 percent between 55 and 64
25.9 percent between 65 and 74
28.8 percent between 75 and 84
12.3 percent 85+ years of age.

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Since the fenceposts are 45 and 54, one would have to assume that if the 10% before age 50 is correct, that 5.6 percent are diagnosed between 45 and 50 and that 5.3 percent are diagnosed between 50 and 55. And I'm sure that the 0.0 percent for under age 20 should be read as < 0.1 percent, as we have people here who have been diagnosed before their 20th birthday.