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A cohort study was conducted to investigate the effects of an Exposure A on disease X. At

the start of the study, everyone is free of disease X! 10 people were followed for 5 years and their progress was recorded in the table below.


Calculate the incidence rate (incidence density) per 1000 using the information in the table. This question has 3 parts.

1) What is the value of the numerator?

2) What is the value of the denominator?

3) Calculate the incidence density per 1000?


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