Our libraries' research guides have several pages with sources for statistics and data.

Start with the list of Statistics databases.

Also:

• Health-related statistics for the United States  (Public Health guide)
• Health-related statistics for the world  (Public Health guide)
• Health statistics/info sources  (Business guide)
• Statistics for health  (Data and Statistics guide)

Research guides about data: on the library home page, go to Research Guides, and enter "data." Scroll all the way down to see all of them:



 

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Definitions (from MeSH):

Incidence:  "The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population."

Prevalence: "The total number of cases [new and old] of a given disease in a specified population at a designated time."