The material here follows in a direct line of descent from Manual X and subsequent works (for example, the 2002 UN Manual of Adult Mortality Estimation). The principal aspect of this website is a series of (mostly) static webpages describing and documenting the tools and methods of demographic estimation from limited, deficient and defective data. The material is organised thematically first, and then by the kinds of data that may be available. Where appropriate, downloadable spreadsheets are provided that allow users to apply the methods to their own data.
Forums are available to discuss and debate methods and results, and FAQs describe how to use the site in more detail. Links to both, as well as forms to contact us, are at the top right hand side of each page.
The material on the site has undergone fairly extensive revision after going through a process of external peer-review. Sections on the measurement of migration, as well as model life tables will be added very shortly. Please return often to make sure you have the latest material. The list of sections still under review is available here
Users are now required to register in order to view the content. Registration is quick and automated. To register, click on the link at the top right.
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