Question: A study is done to examine whether there is an association between the daily use of vitamins A and risk of diabetes over a 10-year

A study is done to examine whether there is an association between the daily use of vitamins A and risk of diabetes over a 10-year period. There were about 3,110 participants under the study and around 1,342 do not take vitamin A daily. About 256 developed diabetes who take vitamin A daily and there was a total of 2,108 participants who had no diabetes.

Answer the contingency table:

With Diabetes No Diabetes Total
Daily use of Vitamin A
None
Total

1. What is the incidence among those who were exposed? Use 1,000 as the multiplication factor.

2. What is the incidence among those who were not exposed? Use 1,000 as the multiplication factor. 3. What is the relative risk of getting diabetes to those who take vitamin A daily compared to those who do not? 4 What is the interpretation of your result? (No association, positive association or negative association)

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