International Programs

The U.S. Census Bureau developed the Population Analysis System (PASEX) to enhance the process of analyzing available population data. PASEX is a set of spreadsheets containing frequently used procedures and methods in basic demographic analysis. PASEX spreadsheets include demographic methods for the following main topics: age structure, mortality, fertility, migration, distribution of population, urbanization, and population projections.

PASEX consists of spreadsheets formatted for use in Excel, so users will need to have access to Excel to use PASEX. The spreadsheets and the special program RUP (a population projection program for rural and urban projections) are distributed together with the manuals describing the basic demographic methods and procedures they perform. The United Nations’ MORTPAK is a set of programs for mortality analysis that can be used with PASEX and RUP for analyzing population data. The user should obtain this package through the United Nations. These demographic analysis tools allow users to produce national and subnational population estimates and projections along with estimates and rates of fertility, mortality, and migration.