Displacement induced by disasters can have significant impacts on individuals and communities by disrupting their lives. To identify displaced populations and evacuees, it is critical to have information on the number of people in a specific area at a particular time, as well as on mobility across regions. The statistics help identify displacements as well as examine changes in the magnitude of mobility, which enable the estimation of the number of people affected and what the subsequent changes are. This section introduces methodologies for computing displacement and disaster statistics, including quality assurance frameworks. It also explains how the baseline is set for detecting changes after disaster hits, and how the statistical relevance of the results is examined.
