Question: Question: In a population based study a total of 245 prevalent heart failure cases were identified on January 1, 2000. In the remaining study population

Question:In a population based study a total of 245 prevalent heart failure cases were identified on January 1, 2000. In the remaining study population (n=7734), researchers identified 725 incident cases of heart failure. The study period was 7 years with a total of 50268 person-years of observation in total.Here is an additional table showing number of cases by age categories:

1.How do I calculate the total cumulative incidence for this study?

2.How do I calculate the total incidence rate over the study period?

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