international workshop on population projections using census data
DESCRIPTION
International Workshop on Population Projections using Census Data. 14 – 16 January 2013 Beijing, China. Session V: Projecting the age patterns of mortality, fertility, and migration. Projecting age patterns of mortality Projecting age patterns of fertility - PowerPoint PPT PresentationTRANSCRIPT
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International Workshop on
Population Projectionsusing Census Data
14 – 16 January 2013Beijing, China
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Session V:Projecting the age patterns of mortality,
fertility, and migration
• Projecting age patterns of mortality• Projecting age patterns of fertility• Projecting age patterns of migration
http://unstats.un.org/unsd/demographic/meetings/wshops/China2013/list_of_docs.htm
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Projecting age patterns of mortality
Overview
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Projecting age patterns of mortality
• Two approaches:– Project age patterns of mortality based on
empirical trends. Level of mortality is implicit.– Project age patterns of mortality based on
established trends of the level of mortality and determine an associated age pattern based on models.
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Life expectancy 2005-2010
The five African countries with the highest and the lowest life expectancy, 2005-2010
Rank Country Life expectancy at birth, bot sexes combined
1 Réunion 77.262 Mayotte 77.143 Libyan Arab Jamahiriya 74.044 Tunisia 73.905 Cape Verde 73.54
50 Guinea-Bissau 46.7651 Zimbabwe 46.5952 Sierra Leone 46.2653 Lesotho 46.0254 Central African Republic 45.91
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Life table survivors, males
0 10 20 30 40 50 60 70 80 90 1000
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Survivors to exact age (lx) per 100,000 live births, Males
Africa Réunion Central African Republic Japan
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Life table survivors, female
0 10 20 30 40 50 60 70 80 90 1000
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Survivors to exact age (lx) per 100,000 live births, Females
Africa Réunion Central African Republic Japan
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Age specific mortality, males
0 10 20 30 40 50 60 70 80 90 1000.00001
0.0001
0.001
0.01
0.1
1
Age specific mortality rate by age (mx), Males
Africa Réunion Central African Republic
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Age-specific mortality, females
0 10 20 30 40 50 60 70 80 90 1000.00001
0.0001
0.001
0.01
0.1
1
Age specific mortality rate by age (mx), Females
Africa Réunion Central African Republic
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The impact of HIV/AIDSBotswana 2000-2005, males
0 10 20 30 40 50 60 70 80 90 1000
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Suirvivor to exact age, Botswana 2000-2005 (males)
AIDS NoAIDS
E0 65.8
E0 48.8
Loss of 17 years
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The impact of HIV/AIDSBotswana 2000-2005, males
0 10 20 30 40 50 60 70 80 90 1000
2000
4000
6000
8000
10000
12000
14000
16000
18000
Life table deaths, Botswana 2000-2005 (males)
AIDS NoAIDS
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Projecting age patterns of mortality I:United Nation Model
The software package MORTPAK from the United Nations provides a program “MATCH”, which generates model life tables.MORTPAK.[MATCH].The original United Nations model for projecting age patterns of mortality has been documented, but not published as a user-friendly tool. See the new updated and extended United Nations model life tables :http://esa.un.org/unpd/wpp/Model-Life-Tables/download-page.html
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MORTPAK
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Select module MATCH
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Worksheet MATCH
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Two scenarios:User-defined a life tableUsing a model life table
Selection of reference life table
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Parameter entry MATCH
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Output MATCH
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User-defined mortality pattern
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Output MATCH
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Projecting age patterns of mortality II:US Census Bureau Model
• The US Census Bureau has developed spreadsheets that interpolate life tables, one for each sex. The procedure interpolates between two “pivotal” life tables, based on the probabilities of dying n[nqx]:• INTPLTM Interpolation for life tables for males• INTPLTF Interpolation for life tables for females
• Usually, the pivotal life tables area) An empirical life table for the base year of the projectionb) An ultimate (upper limit) life table• The spreadsheet generates a life table with a desired level of mortality
that is between the life expectancies of the base and the ultimate life table. Repeated application of the procedure will generate a set of age-specific mortality rates [nmx] or probabilities of dying [nqx].
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INTPLTM.xls/INTPLTF.xls
Input data for INTPLTM/INTPLTF•Table number [“Table 123”]•Country name and Year [“Poplandia: 1960 and 1980”]
• Life expectancy at birth for life table 1 (base year)• Life expectancy at birth for life table 2 (ultimate life table)
•Life expectancy at birth for desired life table•Lower limit of open-ended age group•Life expectancy for the open-ended age group, life table 1•Life expectancy for the open-ended age group, life table 2•Separation factor for age under 1, life table 1•Separation factor for age under 1, life table 2•Separation factor for ages 1-4, life table 1•Separation factor for ages 1-4, life table 1•Probabilities of dying by age nqx for life table 1•Probabilities of dying by age nqx for life table 2
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INTPLTM.xls/INTPLTF.xls
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Projecting age patterns of mortality III:US Census Bureau RUPEX
The US Census Bureau’s population projection program RUPEX has a built-in functionality that is similar to the spreadsheets INTPLTM and INTPLTF. The user needs to specify two pivotal life tables and, optionally, life expectancies for any year between the base and the last year of the projection. The projection program does the interpolation and adjustments automatically of the age-specific mortality values
See on the companion CD: Arriaga (2012). Population Analysis with Microcomputers - Volume II - Extract B RUP.
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Projecting age patterns of mortality IV:Spectrum
Like RUPEX, Spectrum can generate internally age patterns of mortality based on trends of life expectancy and model life tables.
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Hands-on exercise: Mortality patterns
• Make yourself familiar with the Excel templates and the MATCH [MORTPAK] package
• Use your national data for the exercise or use the test data from Session 4.
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Projecting age patterns of fertility
Overview
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Projecting age patterns of fertility
• Approaches:– Using characteristic empirical age patterns of
fertility as a basis for projections. Interpolate between age patterns at the base period and a future target pattern.
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Projecting age patterns of fertility I:United Nation Model
• Excel template UNPD_ASFR.xls• Using characteristic age-patterns of fertility
associated with select levels of fertility, the model generates a series of age patterns by interpolating between a base pattern and a target pattern.
• The template allows for extending the target pattern beyond the last year (target year) by keeping it constant.
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UN Model age-patterns of fertility
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ASFR vs. PASFR
• Don’t forget that the UN model provides standardized age pattern, e.g. proportionate age-specific fertility rates. By multiplying each rate with the corresponding TFR, the ASFR are obtained.
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Projecting age patterns of fertility II:US Census Bureau Model
• The model in spreadsheet ASFRPATT.xls finds age patterns of fertility for a give level of fertility, based on typical age-specific fertility patterns in developing countries.
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ASFRPATT.xls
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ASFRPATT.xls
15-19 20-24 25-29 30-34 35-39 40-44 45-490.0000
0.0500
0.1000
0.1500
0.2000
0.2500
0.3000
0.3500
COUNTRY: YEAR
1970 2050
1. Reported and Desired ASFR's
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ASFRPATT.xls
15-19 20-24 25-29 30-34 35-39 40-44 45-490.0000
0.0500
0.1000
0.1500
0.2000
0.2500
0.3000
0.3500
0.4000
COUNTRY: YEAR
1970 2050
Age
ASFR p
attern
(sum=
1.0)
2. Reported and Desired ASFR Patterns = PASFR
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Hands-on exercise: Fertility patterns
• Make yourself familiar with the Excel templates
• Use your national data for the exercise or use the test data from Session 4.
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Projecting age patterns of migration
Overview
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Projecting age patterns of Migration I:United Nation Model
• Excel template UNPD_Migration Age Patterns.xlsm
• The model generates typical age patterns of migration for net-migration.
• The model estimates a typical sex ratio.• The user may select one of three typical
patterns.
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Projecting age patterns of Migration I:United Nation Model
• Family migration
0-4
5-9 10-14
15-19
20-24
25-29
30-34
35-39
40-44
45-49
50-54
55-59
60-64
65-69
70-74
75-79
80+
0.00
0.05
0.10
0.15
0.20
0.25
0.30
Migration Levels by Age
MaleFemale
Age
5 Ye
ar M
igra
tion
Rate
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Projecting age patterns of Migration I:United Nation Model
• Male Labor Migration(immigration)
0-4
5-9 10-14
15-19
20-24
25-29
30-34
35-39
40-44
45-49
50-54
55-59
60-64
65-69
70-74
75-79
80+
0.00
0.05
0.10
0.15
0.20
0.25
0.30
Migration Levels by Age
MaleFemale
Age
5 Ye
ar M
igra
tion
Rate
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Projecting age patterns of Migration I:United Nation Model
• Female Labor Migration(immigration)
0-4
5-9 10-14
15-19
20-24
25-29
30-34
35-39
40-44
45-49
50-54
55-59
60-64
65-69
70-74
75-79
80+
0.00
0.05
0.10
0.15
0.20
0.25
0.30
Migration Levels by Age
MaleFemale
Age
5 Ye
ar M
igra
tion
Rate
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Hands-on exercise: Migration patterns
• Make yourself familiar with the Excel template• Use your national data for the exercise or use
the test data from Session 4.