ames has conducted an occupational cohort study. He has studied coal miners and their rates of cancer, and has compared them to steel workers, and their rates of cancer. There were 50 coal miners and...

ames has conducted an occupational cohort study. He has studied coal miners and their rates of cancer, and has compared them to steel workers, and their rates of cancer. There were 50 coal miners and 20 steel workers. 25% of steel workers got cancer and 40% of coal miners got cancer. Please draw a 2 by 2 table that represents this scenario.

1. 
   

   What is the AR?

   
   

1. 
   

   What is the OR?

   
   

1. 
   

   Please interpret the OR and make sure to state a time frame )

   
   

1. 
   

   What is the CIR?