Do you have the formula used in clinical studies to calculate risk percentage?

In one study they just asked people about their habits. they have two groups of men. One group suffering of prostate cancer and the second one is well. They asked the two groups about their masturbation behaviors and they come up with the conclusion that masturbation increases prostate cancer by 75%

I would like to know what formulas they have used.

ThanksDo you have the formula used in clinical studies to calculate risk percentage?
I think you are looking for the Population Attributable Risk or PAR% used in clinical trials.



Here's an example:

http://www.statisticalhelp.com/miscellan鈥?/a>



Here's a general discussion of PAR% used in a NIH clinical trial:

http://www.ncbi.nlm.nih.gov/pmc/articles鈥?/a>Do you have the formula used in clinical studies to calculate risk percentage?
I understand. Thanks for giving me BA.



You need to understand that often researchers are funded by entities who wish to profit from the study. I've sometimes wondered if the math is purposefully made confusing.

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Do you have the formula used in clinical studies to calculate risk percentage?
I found another site that's explaining the math without the complicated formulas:



http://www.ehow.com/how_658995鈥?/a>

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