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Graphs on Graphs

Graphs on graphs

One key function of epidemiological reporting is the ability to compare disease trends within a given country, or between countries. The Graphs function in GIDEON allows the user to instantly generate charts which display any combination from among the thousands of graphs in the program.

For example, let’s say that we are interested in comparing the incidence of zoonotic (animal-related) diseases in the United States over the last 4 decades. In the Infectious Diseases module under the Diseases tab, click on the Graph radio button:

Following the directions at the right lower portion of the page, click on United States, and then scroll to diseases of interest in the lower left hand box. I’ve selected five zoonotic diseases of the United States: Brucellosis, Plague, Rocky Mountain spotted fever, Tularemia and Typhus – endemic. At any point, the selections in the upper right hand box can be removed by using the relevant icon on the right margin.

GIDEON allows the user to compare up to 6 graphs in this manner.  Once graphs are selected, click on the  button to the lower right, and the following chart appears:

Another chart suggests that as measles vaccination coverage (blue graph) increased in an African country, the rates of measles (red graph) decreased.

Note that the graphs function can also be used to compare the incidence of one or more diseases in multiple countries. When such comparisons are made, it is recommended that the user select disease rates per 10,000 (rather than case numbers), since the population size for each selected country will vary. This is a chart comparing rates of AIDS among several western European countries:

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