current life tableとは 意味・読み方・使い方

A calendar year life table ¹ or period life table ¹ (cf. 153-2; 432-1) is one in which the mortality rates used relate to a specified time interval and the cohort (116-2) is therefore hypothetical. A generation life table ², or cohort life table ² on the other hand, traces the experience of an actual birth cohort and the mortality rates contained in the table are then spread over a prolonged period, usually about 100 years. A mortality surface ³ is drawn when probabilities of dying (431-1) are plotted against age and time period simultaneously in a three-dimensional diagram. More...