XXVII IUSSP International Population Conference

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Just back from the XXVII IUSSP International Population Conference, held in Busan, Korea. I presented my paper on family planning in Ethiopia (joint with Kathleen Beegle and Luc Christaensen) and a poster on my work on sex selective abortions in India. My student, Shamma Alam, presented our joint paper on income shocks and timing of fertility in Tanzania.

All-in-all it was a great conference and very well-organized. Only complaint was that many of the best US demographers did not attend. Quality of the sessions were a little more varied than what you find at the PAA, but I will be back again in four years. Finally, if you get a chance to go to Korea: take it; it is a wonderful place to visit.

New paper on the link between parental and offspring longevity in the US

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My latest paper is on the relationship between how long your parents' live/lived and your expected survival. Turns out that even with improve medical care, health knowledge, etc, you still cannot be too careful in choosing your parents. The longer your parents live, the lower is your mortality risk. The paper is joint with my former graduate student Edwin Wong. You can find the paper here and the abstract is below.

Studies of adult mortality typically examine the impact of individual characteristics, but ignore the fact that the characteristics of people closely linked to those individuals also influence mortality risk. This paper examines the effect of parental longevity on survival outcomes of adult offspring using survey data from the University of Michigan Health and Retirement Study (HRS) between 1992 and 2008. It employs a competing risk model that controls for correlation between individual death and survey non-response. There is strong evidence that individuals with longer-lived parents exhibit lower mortality risk. Even after controlling for health conditions and behavioral variables of the offspring, parental age at death has a substantial impact on the survival of the adult offspring, suggesting a strong genetic component that must be considered as important in determining longevity.

New version of paper on family planning in Ethiopia available.

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A new version of my paper with Kathleen Beegle and Luc Christiaensen on the effectiveness of family planning programs in Ethiopia is now available. You can find it here. The abstract is below.

Although reproductive health advocates consider family planning programs the intervention of choice to reduce fertility, there remains a great deal of scepticism among economists as to their effectiveness, despite little rigorous evidence to support either position. This study explores the effects of family planning in Ethiopia using a novel set of instruments to control for potential non-random program placement. The instruments are based on ordinal rankings of area characteristics, motivated by competition between areas for resources. Access to family planning is found to reduce completed fertility by more than 1 child among women without education. No effect is found among women with some formal schooling, suggesting that family planning and formal education act as substitutes, at least in this low income, low growth setting. This provides support to the notion that increasing access to family planning can provide an important, complementary entry point to kick-start the process of fertility reduction.

Talks on income shocks and timing of fertility

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I presented preliminary results from Shamma Alam and my work on "Income Shocks, Contraceptive Use, and Timing of Fertility" at University of Oregon in Eugene on 16 November and I will be presenting at the UW labor and development brown bag tomorrow at 12.30. The abstract for the paper is below.

This paper examines the relationship between household income shocks and fertility decisions. Using panel data from Tanzania, we estimate the impact of agricultural shocks on contraception use, pregnancy, and the likelihood of childbirth. To account for unobservable household characteristics that potentially affect both shocks and fertility decisions we employ a fixed effects model. Households significantly increase their contraception use in response to income shocks from crop loss. This comes from an increased use of both traditional contraceptive methods and modern contraceptives. The poorer the household the stronger the effect of income shock on contraceptive use is. Furthermore, pregnancies and childbirth are significantly delayed for households experiencing a crop shock. For both pregnancy and childbirth the likelihood of delay as a result of shocks increases the poorer the household. We argue that these changes in behavior are the result of deliberate decisions of the households rather than income shocks' effects on other factors that influence fertility, such as women's health status, the absence or migration of spouse, and dissolution of partnerships.

New version of paper on the causal effects of dropping out of high school

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Mark Anderson and I just finished revising our paper on high school dropouts and sexually transmitted infections. It has a new title: "High School Dropouts and Sexually Transmitted Infections". You can find the new version here.

People who drop out of high school fare worse in many aspects of life. We analyze whether there is an effect of dropping out of high school on the probability of contracting a sexually transmitted infection (STI). Previous studies on the relationship between dropout status and sexual outcomes have not empirically addressed self-selection effects. Using individual fixed effects estimations we find strong evidence that dropping out increases the risk of contracting an STI for females. Furthermore, we present evidence that illustrates differences between the romantic partners of dropouts versus enrolled students. These differences suggest that female dropouts may be more susceptible to contracting STIs because they partner with significantly different types of people than non-dropouts. Our results point to a previously undocumented benefit of encouraging those at risk of dropping out to stay in school longer.

Shamma Alam named 2012 Hewlett Foundation / IIE Dissertation Fellow

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Shamma Alam has been named as one of the seven 2012 Hewlett Foundation / IIE Dissertation Fellows. These fellowships support dissertation research on topics that examine how population dynamics, family planning and reproductive health influence economic development, including economic growth, poverty reduction, and equity. Shamma and I are currently working on a paper examining the effects of income shocks on timing of fertility and use of contraceptives in Tanzania. Shamma has also worked as my RA on my NSF grant. The official announcement and short bio of Shamma and the other recipients is here.

Visit to Bergen

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I was in Bergen in June and presented my work with Kathleen Beegle and Luc Christiaensen on the effects of family planning on fertility at CMI and my work with Shamma Alam on income shocks and timing of fertility at Norwegian School of Economics. A new version of the family planning paper will be available soon and we should have the first public version of the timing of fertility paper ready soon as well.

Presented Gone with the Wind? paper at the CSAE Conference 2012: Economic Development in Africa

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I was in Oxford in March for the 2012 CSAE Conference: Economic Development in Africa. I presented my paper on the impact of hurricane risk on fertility and education decisions. The conference was great and the quality of the papers continues to increase. You can find the latest version of the paper under "Research" on this website. A full program can be found here.

New version of "Family Planning and Fertility: Estimating Program Effects using Cross-sectional Data"

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We (Kathleen Beegle, Luc Christiaensen and I) have just finished revising our paper on the effects of family planning on fertility in Ethiopia. You can find the new version, which has been submitted to a journal, here. The abstract is:

Although reproductive health advocates consider family planning programs the intervention of choice to reduce fertility, there remains a great deal of scepticism among economists as to their effectiveness, despite little rigorous evidence to support either position. This study explores the effects of family planning in Ethiopia using a novel set of instruments to control for potential non-random program placement. The instruments are based on ordinal rankings of area characteristics, motivated by competition between areas for resources. Access to family planning is found to reduce completed fertility by more than 1 child among women without education. No effect is found among women with some formal schooling, suggesting that family planning and formal education act as substitutes, at least in this low income, low growth setting. This provides support to the notion that increasing access to family planning can provide an important, complementary entry point to kick-start the process of fertility reduction.

A bit of "old" news on population growth

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I really meant to put this up about a month ago, but here we go. The UN recently released the World Population Prospects: The 2010 Revision. This predicts that the world's population will be 9.3 billion by 2050 and will eventually reach 10.1 billion by 2100 using their medium variant. The larger increase compared to the revision two years ago is predominantly from slower than expected fertility declines and lower HIV/AIDS mortality. The NY Times has a nice piece about the new projections and you can find the full report here (once it is all available). The press release provides a bit more detail without being overly long. There are two things especially interesting. First, the new projections are the first based on new Bayesian methods developed here at the UW by Adrian Raftery and others. The UW Today has a little article about the work here. Second, it is very timely for my work with Kathleen Beegle and Luc Christiaensen (both from the World Bank) on the effects of family planning programs in Ethiopia. We show that family planning programs are substantially more effective than what have been found in previous studies. There are two likely reasons for this. First, we focus on the effect by education level and show that the whole effect is concentrated among women with no education. Second, instead of looking at countries that are undergoing rapid economic growth and demographic changes, such as Indonesian or Columbia, we study a poor country where there is little economic growth. We find that the total number of children a woman has declines by 1.2 with access to family planning. The paper is available here.

Labour/development brown bag

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I am presenting at the labour/development brown bag on Thursday 12 May at 12.30. The title of the talk is "Risk Perception, Health Knowledge, and Sexual Behavior." This is not a paper, but a research agenda with Mark Anderson. It follows partly from our recent paper on drop outs and STDs submitted to Demography. A short abstract for the talk is below.

We will discuss a new research agenda relating to adolescent sexual behavior in the US that we are beginning to work on. The talk will focus on the basics of trying to understand the formation of beliefs in the absence of (practical) experience and how expectations and beliefs change over time with experience and additional information.

CSAE and PAA conferences

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Busy March: In addition to the PacDev mentioned below, I presented my work on family planning in Ethiopia at the 25th anniversary conference of the Centre for Studies of African Economies in Oxford and at the Population Association of America's annual meeting in Washington, DC. Mark Anderson and I also had a poster on our paper on the effects of dropping out of high school on sexually transmitted diseases.

Why is Dropping Out of High School Bad? Dropouts and Sexually Transmitted Infections

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Mark Anderson and I just finished a paper looking at one pathway through which dropping out of school might affect future life outcomes. The paper is "Why is Dropping Out of High School Bad? Dropouts and Sexually Transmitted Infections". The abstract for the paper is:

People who drop out of high school fare worse in many aspects of life. We analyze whether there is a causal effect of dropping out of high school on the probability of contracting a sexually transmitted infection (STI). Previous studies on the relationship between dropout status and sexual outcomes have not empirically addressed self-selection effects. Using individual fixed effects estimations we find strong evidence that dropping out increases the risk of contracting an STI for females. Furthermore, we present evidence illustrating differences between the romantic partners of dropouts versus enrolled students. These differences suggest that female dropouts may be more susceptible to contracting STIs because they partner with significantly different types of people than non-dropouts. These results point to a previously undocumented benefit of encouraging those at risk of dropping out to stay in school longer.