On The Quantum And Tempo Of Fertility
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On The Quantum And Tempo Of Fertility
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Author : John Bongaarts
language : en
Publisher:
Release Date : 1998
On The Quantum And Tempo Of Fertility written by John Bongaarts and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Fertility, Human categories.
This study offers a method for removing the effects of tempo distortions from the total fertility rate (TFR). The aim is to advance understanding of the level and trend of past fertility for generating better projections. Correcting for period effects is important due to the heavy reliance on TFR as a demographic measure. TFR is an average of the number of births a woman would have during her reproductive years (ages 15-49 years). TFR should reflect the changes in the timing of childbearing, the relationships between period and cohort measures, the nature and validity of period measures, and the extent to which fertility should include controls for age, parity, duration of marriage, or other demographic factors. Life table measures that standardize for parity or duration in parity do not address the distortions of changes in the timing of childbearing. A decline in the cohort size leads to changes in the mean age of childbearing that do not represent true tempo effects. The proposed method assumes fertility changes by period, duration since last birth, parity, and age, but not by cohort. It is calculated by dividing the observed TFR at each birth order by 1 minus the change in mean age at childbearing at order "i" during the year. Situations include where only births of order one occur, all women in every birth cohort have their first births at a single exact age, all births occur at equal intervals during the year, and all cohorts have the same number of women. The model is tested for the US and Taiwan. The method adjusts for the later age at childbearing and reveals close to replacement fertility in the 1970s and 1980s in the US.
How Long Do We Live
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Author : Elisabetta Barbi
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-03-21
How Long Do We Live written by Elisabetta Barbi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-03-21 with Social Science categories.
This book reviews the debate on how best to measure period longevity. Leading experts in demography critically examine the existence of the tempo effect in mortality, present extensions and applications, and compare period and cohort longevity measures.
Determinants Of The Tempo And Quantum Of Japanese Cohort Marital Fertility Since The 1960s
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Author : Kenji Otani
language : en
Publisher:
Release Date : 1987
Determinants Of The Tempo And Quantum Of Japanese Cohort Marital Fertility Since The 1960s written by Kenji Otani and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Birth intervals categories.
Fertility Tempo And Quantum An Empirical Test Of Major Theories With Data From Four Ffs Countries
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Author : P. Di Giulia
language : en
Publisher:
Release Date : 1999
Fertility Tempo And Quantum An Empirical Test Of Major Theories With Data From Four Ffs Countries written by P. Di Giulia and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Fertility, Human categories.
The End Of The Fertility Transition In The Developed World
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Author : John Bongaarts
language : en
Publisher:
Release Date : 2001
The End Of The Fertility Transition In The Developed World written by John Bongaarts and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Demographic transition categories.
The Fertility Impact Of Changes In The Timing Of Childbearing In The Developing World
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Author : John Bongaarts
language : en
Publisher:
Release Date : 1999
The Fertility Impact Of Changes In The Timing Of Childbearing In The Developing World written by John Bongaarts and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Childbirth categories.
How Long Do We Live
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Author : Elisabetta Barbi
language : en
Publisher: Springer
Release Date : 2009-09-03
How Long Do We Live written by Elisabetta Barbi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-09-03 with Social Science categories.
This book reviews the debate on how best to measure period longevity. Leading experts in demography critically examine the existence of the tempo effect in mortality, present extensions and applications, and compare period and cohort longevity measures.
The Impact Of Marital Breakdown On The Quantum And Tempo Of Childbearing In England And Wales
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Author : Ian D. Diamond
language : en
Publisher:
Release Date : 1996
The Impact Of Marital Breakdown On The Quantum And Tempo Of Childbearing In England And Wales written by Ian D. Diamond and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Childbirth categories.
Fertility Biology And Behavior
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Author : John Bongaarts
language : en
Publisher: Academic Press
Release Date : 1983-04-28
Fertility Biology And Behavior written by John Bongaarts and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983-04-28 with Medical categories.
Fertility, Biology, and Behavior: An Analysis of the Proximate Determinants presents the proximate determinants of natural fertility. This book discusses the biological and behavioral dimensions of human fertility that are linked to intermediate fertility variables. Organized into nine chapters, this book begins with an overview of the mechanisms through which socioeconomic variables influence fertility. This text then examines the absolute and relative age-specific marital fertility rates of selected populations. Other chapters consider the trends in total fertility rates of selected countries, including Colombia, Kenya, Korea, Indonesia, Mexico, Pakistan, France, and United States. This book discusses as well the effects of deliberate marital fertility control through contraception and induced abortion. The final chapter deals with the management of sex composition and implications for birth spacing. This book is a valuable resource for reproductive physiologists, social scientists, demographers, statisticians, biologists, and graduate students with an interest in the biological and behavioral control of human fertility.
How Long Do We Live
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Author : Elisabetta Barbi
language : en
Publisher: Springer Verlag
Release Date : 2008-04-07
How Long Do We Live written by Elisabetta Barbi and has been published by Springer Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-04-07 with Business & Economics categories.
The most widely used measure of longevity is the period life expectancy at birth which is calculated from age specific death rates by life table methods. In 2002, John Bongaarts and Griffith Feeney introduced the revolutionary idea that this conventional estimate of period life expectancy is distorted by a tempo effect whenever longevity is changing. The tempo effect is defined as an inflation or deflation of the period incidence of a demographic event resulting from a rise or fall in the mean age at which the event occurs. Some demographers agree with this radical argument; others disagree. The book reviews the debate on how best to measure period longevity. In the various chapters, leading experts in demography critically examine the existence of the tempo effect in mortality, present extensions and applications, and compare period and cohort longevity measures. The book provides a deeper understanding of and new insights into the fundamental question "How long do we live"?