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Life Tables - Period : 2014-2016
Life expectancy at birth was 78 years in Turkey
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Statistical Tables and Dynamic Search
Analytical Framework, Concepts, Definitions, and Classifications
The objective of this activity is to produce reliable, sustainable and updated life tables for Turkey overall and for 81 provinces in order to make a contribution to the improvement of demographic/social statistics in Turkey.
Tables that explain mortality probabilities and other statistics in detail by each age and sex (e.g. Life expectancy at birth, life expectancy at each age, number of survivors by age etc.).
Life tables display how the members of the same birth cohort "leave" the birth cohort by death throughout the aging process, how the birth cohort totally dies out by showing the average length of life and the course of mortality by each age. The cohort can be a real or a synthetic (assumptional) cohort. Life table is comprised of a series of columns which are mathematically interrelated with each other.
Period Life Tables:
Tables that present what would happen to a synthetic cohort through time if it experienced the age-specific mortality rates for a particular period throughout the life of the cohort.
Definitions of the variables used in establishing the life tables are as given below :
Interval, i.e., duration between two exact ages,
Life table death rate between exact age x and x+n,
The probability of dying between exact ages x and x+n,
The number of survivors at exact age x,
The expectation of life at exact age x,
e (15) :
The average number of years of life remaining at age 15,
For example, a person who is currently at age 15 is expected to live additional 64.2 years on average under current mortality conditions.
e (65) :
The average number of years of life remaining at age 65,
For example, a male who is currently at age 65 is expected to live additional 16.1 years on average under current males mortality conditions.
Life Expectancy at birth (e0):
It is the average number of years an infant is supposed to live having been exposed to age specific mortality rates at certain periods all through his/her life.
Scope of the Data
Life tables were produced for 81 provinces (NUTS-3) based on administrative registers, which is the first study officially in this sense. Life tables for 2013 and 2013-2014 period were produced by province, single ages and sex, while life tables for 2013-2015 period and 2014-2016 period were produced by single ages and sex for the total of Turkey.
Complete (single age) life table for Turkey will be produced annually, and life expectancy at birth by sex for provinces will be produced every three-years.
Characteristics of Basic Data Sources
Address Based Population Registration System (ABPRS) and Central Civil Registration System (MERNIS) have been used as data sources.
Life tables are produced on the basis of period life table methodology. Period life tables are based on age-specific mortality rates (nMx).
While creating life tables at the provincial level, inter-provincial migration affects population size and mortality rates. In order to remove this impact, adjustment of migration was adopted at province-level.
In order to calculate age-specific death rates, population data was obtained from ABPRS and mortality data was obtained from death statistics.
For example, in order to calculate age-specific death rates for the period 2014-2016, population data of 2013, 2014, 2015, 2016 and death statistics of 2014, 2015, 2016 were used.
While creating life tables for 2013, Bennett-Horiuchi technique was used for elimination of the under-coverage in mortality data. However, as a result of analyzes performed on 2014 data and improvements in the administrative records, need for revision on calculation method arised. In this context, life tables for 2013 were recalculated without using the Bennett-Horiuchi technique in accordance with TurkStat’s Revision Policy, in order to ensure the comparability.
2013-2015 period life tables were calculated by moving average method through using population and mortality data of three consecutive years. Life tables for the following periods will also be produced by this method.
The following assumptions were used during production of life tables:
To ensure the compliance with the mortality data, institutional population was considered in the province of residence.
Foreign citizens residing within the boundaries of the country were excluded from the calculations.
Revision is not foreseen in 2017. In case of any revision it will be shared with the public.
Information form of the main revision on the results of 2013, and methodological document can be accessed via the link below.
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