The Human Mortality Database (HMD) was created to provide detailed mortality and population data to researchers, students, journalists, policy analysts, and others interested in the history of human longevity. The Human Mortality Database (HMD) contains original calculations of death rates and life tables for national populations (countries or areas), as well as the input data used in constructing those tables. The input data consist of death counts from vital statistics, plus census counts, birth counts, and population estimates from various sources.
For some populations, data on mortality at older ages came from or were complemented by the Kannisto-Thatcher Database (KTD) on Old Age Mortality. In addition, we often use data from the Human Lifetable Database (HLD) for checking our estimates.
The Berkeley Mortality Database (http://bmd.mortality.org/) is an older version of the HMD.