These graphs can include line graphs, histograms (epidemic curves), and scatter diagrams (see Box 6.4 for general guidelines in construction of epidemiologic graphs). Take care in selecting a graph type in computer graphics programs.
The averages and dispersions can be displayed in a table or visualized in a box-and-whisker plot that indicates the median, mean, interquartile range, and outliers ( Figure 6.1) ( 5 ). Time (When?) Time has special importance in interpreting epidemiologic data in that the initial exposure to a causative agent must precede disease.
Unfortunately, the global epidemiology of diabetes has not been re-evaluated since the availability of recent high-quality data . We found no studies providing global forecasts for the intermediate future, which would be a critical piece of information for health policymakers.