Calculate the Odds Ratio of Developing Colorectal Cancer Related to a Low-Fibre

Calculate the odds ratio of developing colorectal cancer related to a low-fibre diet from the following example.Write a statement that would explain your results to a client.
Study group = 300
Risk factor = low-fibre diet
Disease = colorectal cancer
a)persons with low-fibre diet and colorectal cancer = 100
b)persons with high-fibre diet and colorectal cancer = 20
Total persons with colorectal cancer = 120
c)person with low-fibre diet and no colorectal cancer = 20
d)persons with high-fibre diet and no colorectal cancer = 160
Total persons without colorectal cancer = 180

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OR = a/c divided by b/d
= ad d...

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