| Yours is way, way too crude and simplistic an analysis. If the group of 220 exposed, was representative of the entire U.S. population (same ratio of genders, age, races, smokers, drinkers, and 200 other relevant variables), then you could expect the same ratio of cancers (in the same time periods). It takes an expert in statistics and medicine, to make the statement you made. And probably a 50-page report to back it up. It took me about 4 minutes via google, to find what I did. If you cared, (I don't, it's a trivial issue and OT), you could look for more data, rather than just dismissing it with an argument that would get you laughed at in an introductory statistics class. |
