Question: I need typed answer don't write in a paper 1. what are the primary differences between case-control studies, cohort studies, and ecological studies? In what

I need typed answer don't write in a paper

1. what are the primary differences between case-control studies, cohort studies, and ecological studies? In what circumstances would each be useful?

2. What is the definition of incidence and prevalence? How are incidence & prevalence related?

3. Explain the differences between primary, secondary, and tertiary interventions and give and example of each.

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