What are the criteria for establishing a cause-and-effect relationship?

Create a Word document with a title page, use page headers and numbers, level headings, in-text citations, and a reference list, following all APA formatting requirements. Papers should be 3-4 pages (excluding cover sheet and reference page).
1.

Differentiate between HeaLY and HALE.
What are the criteria for establishing a cause-and-effect relationship?
Describe how descriptive and analytical epidemiology are used.

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