Does human mortality after age 110 continue to rise, level off, or start to decline? This book describes a concerted international research effort undertaken with the goal of establishing a database that allows the best possible description of the mortality trajectory beyond the age of 110. The International Database on Longevity (IDL) is the result of this ongoing effort. The IDL contains exhaustive information on validated cases of supercentenarians (people 110 years and older) and allows unbiased estimates of mortality after age 110. The main finding is remarkable: human mortality after age 110 flattens out at a probability of death of 50% per year. The 16 chapters of this book discuss age validation in cases of exceptional longevity, data on supercentenarians in a series of countries, the structure and contents of the IDL, and statistical analysis of human mortality after age 110. Several chapters include short accounts of specific supercentenarians that add colour to the demographic research.
Supercentenarians (full book)
Chapter: ‘Emergence and verification of supercentenarians in Spain’ (full text)