Period life expectancy Life expectancy based on mortality probabilities in a certain period, usually one calender year. This expectancy assumes that mortality probabilities are stationary over time. To calculate period life expectancy current probabilities are used as the probabilities needed for 1 or 2 years from now. Thus, period life expectancy does not account for expected future developments in mortality. This definition is often used to compare developments in time, but must not be used to estimate the expected longevity of individuals. Projection period The number of future years over which -within the model- mortality levels are stated. Projections life table Mortality table in which mortality rates are given for each future year. This provides a mortality probability for each combination of age and observation year. This offers the possibility to calculate a remaining life expectancy for every age and every (future) starting year. Statline Statline is the public database of Statistics Netherlands (CBS). It provides statistics on economics, the Dutch population and our society. Stochastic model Model in which future mortality probabilities are not fixed but are defined by means of probability distributions. Stochastic projections life table Projections life table that results from using a stochastic model and hence assumes different values in different realisations of the random variables (as can be seen in the simulations). Projections Life Table AG2020 Appendix D 54
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