Sex ratio at birth estimation and projection

Apr 27, 2016
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Image credit: © 2019 Chao et al.

I build statistical models to estimate and project human sex ratio at birth on national and sub-national levels.

Statistical Demography
Fengqing Chao
Fengqing Chao
Assistant Professor of Computational Social Science

My research interests include statistical demography, global health, Bayesian modeling, and time series analysis.

Posts

Calculating Missing Female Births
We explain in greater detail how missing female births has been calculated in our recent study.
Last updated on Jul 1, 2019 4 min read
Project

Publications

Levels and trends estimate of sex ratio at birth for seven provinces of Pakistan from 1980 to 2020 with scenario-based probabilistic projections of missing female birth to 2050: A Bayesian modeling approach
Most evidence on son preference in Pakistan is reflected in the higher child mortality among females than males. The sex discrimination …
Fengqing Chao, Muhammad Asif Wazir, Hernando Ombao
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Levels and trends estimate of sex ratio at birth for seven provinces of Pakistan from 1980 to 2020 with scenario-based probabilistic projections of missing female birth to 2050: A Bayesian modeling approach
Estimating and Projecting Prenatal Sex Discrimination around the World and on Subnational Level in Asia
Sex ratio at birth (SRB) is an important indicator to monitor prenatal sex discrimination. We provide a set of national and subnational …
Fengqing Chao
PDF Cite Project DOI Population Association of Singapore (PAS)
Estimating and Projecting Prenatal Sex Discrimination around the World and on Subnational Level in Asia
Estimation and probabilistic projection of levels and trends in the sex ratio at birth in seven provinces of Nepal from 1980 to 2050: a Bayesian modeling approach
The sex ratio at birth (SRB; ratio of male to female births) in Nepal has been reported around the normal level on the national level. …
Fengqing Chao, Samir K.C., Hernando Ombao
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Estimation and probabilistic projection of levels and trends in the sex ratio at birth in seven provinces of Nepal from 1980 to 2050: a Bayesian modeling approach
Technical Appendix for Estimation and probabilistic projection of levels and trends in the sex ratio at birth in seven provinces of Nepal from 1980 to 2050: a Bayesian modeling approach
This web appendix is for Estimation and probabilistic projection of levels and trends in the sex ratio at birth in seven provinces of Nepal from 1980 to 2050: a Bayesian modeling approach.
Fengqing Chao, Samir K.C., Hernando Ombao
PDF Cite Project Source Document DOI
Web appendix for levels and trends in sex ratio at birth in provinces of Pakistan from 1980 to 2020 with scenario-based missing female birth projections to 2050: a Bayesian modeling approach
This web appendix is for Levels and trends in sex ratio at birth in provinces of Pakistan from 1980 to 2020 with scenario-based missing female birth projections to 2050: a Bayesian modeling approach.
Fengqing Chao, Muhammad Asif Wazir, Hernando Ombao
PDF Cite Project Source Document DOI
Global estimation and scenario-based projections of sex ratio at birth and missing female births using a Bayesian hierarchical time series mixture model
The sex ratio at birth (SRB) is defined as the ratio of male to female live births. The SRB imbalance in parts of the world over the …
Fengqing Chao, Patrick Gerland, Alex R. Cook, Leontine Alkema
PDF Cite Project Source Document DOI
Global estimation and scenario-based projections of sex ratio at birth and missing female births using a Bayesian hierarchical time series mixture model
Projecting sex imbalances at birth at global, regional and national levels from 2021 to 2100: scenario-based Bayesian probabilistic projections of the sex ratio at birth and missing female births based on 3.26 billion birth records
Skewed levels of the sex ratio at birth (SRB) due to sex-selective abortions have been observed in several countries since the 1970s. …
Fengqing Chao, Patrick Gerland, Alex R. Cook, Christophe Z. Guilmoto, Leontine Alkema
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Projecting sex imbalances at birth at global, regional and national levels from 2021 to 2100: scenario-based Bayesian probabilistic projections of the sex ratio at birth and missing female births based on 3.26 billion birth records
Sex ratio at birth in Vietnam among six subnational regions during 1980-2050, estimation and probabilistic projection using a Bayesian hierarchical time series model with 2.9 million birth records
The sex ratio at birth (SRB, i.e., the ratio of male to female births) in Vietnam has been imbalanced since the 2000s. Previous studies …
Fengqing Chao, Christophe Z. Guilmoto, Hernando Ombao
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Sex ratio at birth in Vietnam among six subnational regions during 1980-2050, estimation and probabilistic projection using a Bayesian hierarchical time series model with 2.9 million birth records
S1 Appendix Sex ratio at birth in Vietnam among six subnational regions during 1980–2050, estimation and probabilistic projection using a Bayesian hierarchical time series model with 2.9 million birth records
This web appendix is for Sex ratio at birth in Vietnam among six subnational regions during 1980–2050, estimation and probabilistic projection using a Bayesian hierarchical time series model with 2.9 million birth records.
Fengqing Chao, Christophe Z. Guilmoto, Hernando Ombao
PDF Cite Project Source Document DOI
Sex Ratio at Birth by Vietnamese Region Estimation and Projection, a Bayesian modeling approach
The slides were presented on Mar 16th, 2021, in the 2021 ENAR Spring Meeting (virtual meeting), Session 56 Time Series Modeling. The slides are for preprint Sex ratio at birth in Vietnam among six subnational regions during 1990-2050, estimation and probabilistic projection using a Bayesian hierarchical time series model.
Fengqing Chao
PDF Cite Project DOI ENAR 2021 Spring Meeting
Sex Ratio at Birth by Vietnamese Region Estimation and Projection, a Bayesian modeling approach
Web Appendix Projecting sex imbalances at birth at global, regional, and national levels from 2018 to 2100: scenario-based Bayesian probabilistic projections of the sex ratio at birth and missing female births
This web appendix is for Projecting sex imbalances at birth at global, regional, and national levels from 2018 to 2100: scenario-based Bayesian probabilistic projections of the sex ratio at birth and missing female births.
Fengqing Chao, Patrick Gerland, Alex R. Cook, Christophe Z. Guilmoto, Leontine Alkema
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Estimating and Projecting Disparities in Pre- and Post-natal Survival using Bayesian Methods
It is crucial to monitor demographic and global health indicators accurately in order to optimize resource allocation. This is …
Fengqing Chao
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Estimating and Projecting Disparities in Pre- and Post-natal Survival using Bayesian Methods
Probabilistic Projection of the Sex Ratio at Birth and Missing Female Births by State and Union Territory in India
The sex ratio at birth (SRB) in India has been reported to be imbalanced since the 1970s. Previous studies have shown there is a great …
Fengqing Chao, Christophe Z. Guilmoto, Samir K.C., Hernando Ombao
PDF Cite Project Source Document DOI
Probabilistic Projection of the Sex Ratio at Birth and Missing Female Births by State and Union Territory in India
Scenario-Based Bayesian Probabilistic Projections of the Sex Ratio at Birth and Missing Female Births
We describe a method for probabilistic scenario-based projection of the sex ratio at birth (SRB; ratio of male to female live births) …
Fengqing Chao
PDF Cite Project Source Document DOI JSM website
S1 Appendix Probabilistic projection of the sex ratio at birth and missing female births by State and Union Territory in India
This web appendix is for Probabilistic projection of the sex ratio at birth and missing female births by State and Union Territory in India.
Fengqing Chao, Christophe Z. Guilmoto, Samir K.C., Hernando Ombao
PDF Cite Project Source Document DOI
Technical Appendix Levels and trends in the sex ratio at birth in seven provinces of Nepal between 1980 and 2016 with probabilistic projections to 2050: a Bayesian modeling approach
This web appendix is for the preprint Levels and trends in the sex ratio at birth in seven provinces of Nepal between 1980 and 2016 with probabilistic projections to 2050: a Bayesian modeling approach.
Fengqing Chao, Samir K.C., Hernando Ombao
PDF Cite Project Source Document DOI
On the estimation of female births missing due to prenatal sex selection
This research note is prompted by a paper by Kashyap (Is prenatal sex selection associated with lower female child mortality? …
Christophe Z. Guilmoto, Fengqing Chao, Purushottam M. Kulkarni
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Levels and trends in the sex ratio at birth and missing female births for 29 states and union territories in India 1990-2016: A Bayesian modeling study
The sex ratio at birth (SRB) has risen in India and reaches well beyond the levels under normal circumstances since the 1970s. The …
Fengqing Chao, Ajit Kumar Yadav
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Levels and trends in the sex ratio at birth and missing female births for 29 states and union territories in India 1990-2016: A Bayesian modeling study
Systematic assessment of the sex ratio at birth for all countries and estimation of national imbalances and regional reference levels
We identify 12 countries with strong statistical evidence of SRB imbalance during 1970–2017, resulting in 45.0 (95% uncertainty …
Fengqing Chao, Patrick Gerland, Alex R. Cook, Leontine Alkema
PDF Cite Dataset Project Source Document DOI
Systematic assessment of the sex ratio at birth for all countries and estimation of national imbalances and regional reference levels
Web Appendix Systematic assessment of the sex ratio at birth for all countries and estimation of national imbalances and regional reference levels
This web appendix formed part of the original submission and has been peer reviewed. The journal post it as supplied by the authors. Supplement to: Chao, F., Gerland, P., Cook, A.
Fengqing Chao, Patrick Gerland, Alex R. Cook, Leontine Alkema
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A Systematic Assessment of National, Regional and Global Levels and Trends in the Sex Ratio at Birth and Identification of Countries With Outlying Levels
We implemented Bayesian methods for probabilistic sex ratio at birth (SRB) estimation and projection for all countries based on an …
Fengqing Chao, Patrick Gerland, Alex R. Cook, Leontine Alkema
PDF Cite Project Slides Source Document DOI PAA conference website
A Systematic Assessment of National, Regional and Global Levels and Trends in the Sex Ratio at Birth and Identification of Countries with Outlying Levels
Under normal circumstances, the sex ratio at birth (SRB) has been reported to vary between 1.04 and 1.07. But gender discrimination and …
Fengqing Chao, Leontine Alkema, Patrick Gerland
PDF Cite Project Slides Source Document DOI PAA conference website

Events

Levels and Trends in the Sex Ratio at Birth by Vietnam Region Between 1980 and 2018 with Probabilistic Projections to 2050, a Bayesian Modeling Approach
ENAR Spring Meeting
Mar 16, 2021 12:00 PM — 12:00 PM Virtual meeting
Project Slides
Levels and Trends in the Sex Ratio at Birth by Vietnam Region Between 1980 and 2018 with Probabilistic Projections to 2050, a Bayesian Modeling Approach