Hampton Gaddy
@hggaddy.bsky.social
Demographer | PhD student, @lseechist.bsky.social | Usually working on the 1918 flu | he/him | https://hggaddy.github.io/
Pinned
Hampton Gaddy
@hggaddy.bsky.social
· Aug 27
One Epidemic, Many Estimates (1EME)
One Epidemic, Many Estimates (1EME)
www.lse.ac.uk
📢 Interested in excess mortality methods, and want a challenge? I'm organising the "One Epidemic, Many Estimates" (1EME) project! Register *now* as a many analyst team (submissions due 15 March 2026), and then join us at LSE for a workshop on 21-22 May 2026! (1/n)
www.lse.ac.uk/Economic-His...
www.lse.ac.uk/Economic-His...
Reposted by Hampton Gaddy
Curious about using census microdata in your research? 📊
Join us for a webinar on IPUMS International, the world’s leading repository of harmonized census data.
🗓️ 12 Nov 2025 | 🕒 15:15–16:30 UK | 💻 Zoom
Register: forms.gle/oqTDNU4Zpn2s...
Hosted by the LSE Historical Economic Demography Group.
Join us for a webinar on IPUMS International, the world’s leading repository of harmonized census data.
🗓️ 12 Nov 2025 | 🕒 15:15–16:30 UK | 💻 Zoom
Register: forms.gle/oqTDNU4Zpn2s...
Hosted by the LSE Historical Economic Demography Group.
Register for IPUMs International Online Session
Please use this form to register for the IPUMs International Session hosted by the Historical Economic Demography Group at LSE.
The session will be on Zoom from 15:15-16:30 UK Time on 12 November 202...
forms.gle
November 5, 2025 at 9:52 PM
Curious about using census microdata in your research? 📊
Join us for a webinar on IPUMS International, the world’s leading repository of harmonized census data.
🗓️ 12 Nov 2025 | 🕒 15:15–16:30 UK | 💻 Zoom
Register: forms.gle/oqTDNU4Zpn2s...
Hosted by the LSE Historical Economic Demography Group.
Join us for a webinar on IPUMS International, the world’s leading repository of harmonized census data.
🗓️ 12 Nov 2025 | 🕒 15:15–16:30 UK | 💻 Zoom
Register: forms.gle/oqTDNU4Zpn2s...
Hosted by the LSE Historical Economic Demography Group.
Great piece by @davidwlawson.bsky.social highlighting three new papers on polygamy. It's complicated but the effects aren't what you think: polygamy usually doesn't create "excess" men, usually doesn't disadvantage child health, and can even be an economic hedge!
theconversation.com/rethinking-p...
theconversation.com/rethinking-p...
October 22, 2025 at 10:01 AM
Great piece by @davidwlawson.bsky.social highlighting three new papers on polygamy. It's complicated but the effects aren't what you think: polygamy usually doesn't create "excess" men, usually doesn't disadvantage child health, and can even be an economic hedge!
theconversation.com/rethinking-p...
theconversation.com/rethinking-p...
Reposted by Hampton Gaddy
Excited to share my recent WP with Alan de Bromhead & @ronanlyons.bsky.social
Build Better Health: Evidence from Ireland on Housing Quality and Mortality
cepr.org/publications... via @cepr.org
Build Better Health: Evidence from Ireland on Housing Quality and Mortality
cepr.org/publications... via @cepr.org
DP20725 Build Better Health: Evidence from Ireland on Housing Quality and Mortality
Poor housing conditions, and the negative effects of Household Air Pollution (HAP) in particular, remain one of the most pressing global public health challenges. While the association between poor housing and health has a long history, evidence of a direct link is lacking. In this paper, we examine a rare example of a public housing intervention in rural areas, namely the large-scale provision of high-quality housing in Ireland in the late 19th and early 20th centuries. We exploit a novel dataset of deaths-by-disease and deaths-by-age-and-sex over the period 1871–1919, to test the impact of the intervention on mortality. Our difference-in difference estimates indicate that improved housing conditions reduced mortality by as much as 1 death per 1000. This effect is driven by reductions in deaths from respiratory diseases. We propose a likely mechanism that is consistent with the pattern of results we observe: a reduction in Household Air Pollution through improved housing quality and better ventilation. A cost-benefit analysis reveals that the scheme was a highly cost-effective intervention.
cepr.org
October 20, 2025 at 3:04 PM
Excited to share my recent WP with Alan de Bromhead & @ronanlyons.bsky.social
Build Better Health: Evidence from Ireland on Housing Quality and Mortality
cepr.org/publications... via @cepr.org
Build Better Health: Evidence from Ireland on Housing Quality and Mortality
cepr.org/publications... via @cepr.org
Reposted by Hampton Gaddy
✍️ Just out: Annette Baudisch & I delve into the formal demography of fertility, birth, & reproduction timing. 👶 We use methods from mortality research to summarize when in the parental life course children are born. 📆 1/n
doi.org/10.1080/0032...
@sdu.dk @oxforddemsci.bsky.social @mpidr.bsky.social
doi.org/10.1080/0032...
@sdu.dk @oxforddemsci.bsky.social @mpidr.bsky.social
Fertility, birth, reproduction: Connecting formal demographic frameworks
The conventional framework of fertility research conceptualizes childbirth from the mother’s perspective. From her perspective, birth is an uncertain and potentially recurring event. In contrast, t...
doi.org
October 7, 2025 at 12:51 PM
✍️ Just out: Annette Baudisch & I delve into the formal demography of fertility, birth, & reproduction timing. 👶 We use methods from mortality research to summarize when in the parental life course children are born. 📆 1/n
doi.org/10.1080/0032...
@sdu.dk @oxforddemsci.bsky.social @mpidr.bsky.social
doi.org/10.1080/0032...
@sdu.dk @oxforddemsci.bsky.social @mpidr.bsky.social
Reposted by Hampton Gaddy
CALL FOR PAPERS
A workshop at LSE next April on 'Uses and Abuses of the Murdock Atlas in Social Science Research'. We're looking for cross-disciplinary engagement to think critically about what this widely used source means, what it can & can't tell us. Submit by Nov 14
www.lse.ac.uk/economic-his...
A workshop at LSE next April on 'Uses and Abuses of the Murdock Atlas in Social Science Research'. We're looking for cross-disciplinary engagement to think critically about what this widely used source means, what it can & can't tell us. Submit by Nov 14
www.lse.ac.uk/economic-his...
Uses and abuses of the Murdock Atlas in social science research
www.lse.ac.uk
October 8, 2025 at 7:33 AM
CALL FOR PAPERS
A workshop at LSE next April on 'Uses and Abuses of the Murdock Atlas in Social Science Research'. We're looking for cross-disciplinary engagement to think critically about what this widely used source means, what it can & can't tell us. Submit by Nov 14
www.lse.ac.uk/economic-his...
A workshop at LSE next April on 'Uses and Abuses of the Murdock Atlas in Social Science Research'. We're looking for cross-disciplinary engagement to think critically about what this widely used source means, what it can & can't tell us. Submit by Nov 14
www.lse.ac.uk/economic-his...
Reposted by Hampton Gaddy
I'd add that at least in China before the 20th century, polygyny probably wasn't as prevalent as commonly imagined. In our northeast Chinese rural datasets, it was very rare. By the late 19th century, it was also uncommon in the Imperial Lineage, except among close relatives of the Emperor. 1/3
🚨 The Economist has been telling you for years that polygamy causes civil war by locking men out of marriage. A new article with @rebeccasear.bsky.social and @anthrolog.bsky.social explains that the demography of marriage markets doesn't actually work that way. 🧵
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
High rates of polygyny do not lock large proportions of men out of the marriage market | PNAS
There is a widespread belief, in both the scholarly literature and the popular press,
that polygyny prevents large numbers of men from marrying by ...
www.pnas.org
October 7, 2025 at 7:22 AM
I'd add that at least in China before the 20th century, polygyny probably wasn't as prevalent as commonly imagined. In our northeast Chinese rural datasets, it was very rare. By the late 19th century, it was also uncommon in the Imperial Lineage, except among close relatives of the Emperor. 1/3
Reposted by Hampton Gaddy
🚨 The Economist has been telling you for years that polygamy causes civil war by locking men out of marriage. A new article with @rebeccasear.bsky.social and @anthrolog.bsky.social explains that the demography of marriage markets doesn't actually work that way. 🧵
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
High rates of polygyny do not lock large proportions of men out of the marriage market | PNAS
There is a widespread belief, in both the scholarly literature and the popular press,
that polygyny prevents large numbers of men from marrying by ...
www.pnas.org
October 6, 2025 at 12:45 PM
🚨 The Economist has been telling you for years that polygamy causes civil war by locking men out of marriage. A new article with @rebeccasear.bsky.social and @anthrolog.bsky.social explains that the demography of marriage markets doesn't actually work that way. 🧵
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Reposted by Hampton Gaddy
🧵 1/ New paper from CCEs @rebeccasear.bsky.social led by @hggaddy.bsky.social with @anthrolog.bsky.social challenging some common assumptions about polygyny (there are many…)
it's open access 🔓 🧪 @brunelpsy.bsky.social
it's open access 🔓 🧪 @brunelpsy.bsky.social
High rates of polygyny do not lock large proportions of men out of the marriage market
www.pnas.org
October 6, 2025 at 1:59 PM
🧵 1/ New paper from CCEs @rebeccasear.bsky.social led by @hggaddy.bsky.social with @anthrolog.bsky.social challenging some common assumptions about polygyny (there are many…)
it's open access 🔓 🧪 @brunelpsy.bsky.social
it's open access 🔓 🧪 @brunelpsy.bsky.social
🚨 The Economist has been telling you for years that polygamy causes civil war by locking men out of marriage. A new article with @rebeccasear.bsky.social and @anthrolog.bsky.social explains that the demography of marriage markets doesn't actually work that way. 🧵
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
High rates of polygyny do not lock large proportions of men out of the marriage market | PNAS
There is a widespread belief, in both the scholarly literature and the popular press,
that polygyny prevents large numbers of men from marrying by ...
www.pnas.org
October 6, 2025 at 12:45 PM
🚨 The Economist has been telling you for years that polygamy causes civil war by locking men out of marriage. A new article with @rebeccasear.bsky.social and @anthrolog.bsky.social explains that the demography of marriage markets doesn't actually work that way. 🧵
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
LSE and @bspsuk.bsky.social are hosting a workshop on "Being an academic in population studies" on 3 November! It'll be a nice mix of methods training and career advice with great talks by @ericbschneider.bsky.social, Wendy Sigle, José Manuel Aburto, and others!
www.eventbrite.co.uk/e/being-an-a...
www.eventbrite.co.uk/e/being-an-a...
September 26, 2025 at 11:29 AM
LSE and @bspsuk.bsky.social are hosting a workshop on "Being an academic in population studies" on 3 November! It'll be a nice mix of methods training and career advice with great talks by @ericbschneider.bsky.social, Wendy Sigle, José Manuel Aburto, and others!
www.eventbrite.co.uk/e/being-an-a...
www.eventbrite.co.uk/e/being-an-a...
The data is now available for all teams who've already signed up! More sign-ups very welcome! Happy analysing! 💻📊
📢 Interested in excess mortality methods, and want a challenge? I'm organising the "One Epidemic, Many Estimates" (1EME) project! Register *now* as a many analyst team (submissions due 15 March 2026), and then join us at LSE for a workshop on 21-22 May 2026! (1/n)
www.lse.ac.uk/Economic-His...
www.lse.ac.uk/Economic-His...
One Epidemic, Many Estimates (1EME)
One Epidemic, Many Estimates (1EME)
www.lse.ac.uk
September 16, 2025 at 11:27 AM
The data is now available for all teams who've already signed up! More sign-ups very welcome! Happy analysing! 💻📊
Reposted by Hampton Gaddy
Since pandemic mortality is clearly still a question people seem to be confused about, this project at the LSE is showing us where we need to go: www.lse.ac.uk/Economic-His... #histmed #PublicHealth #PandemicThinking #ExcessMortality
One Epidemic, Many Estimates (1EME)
One Epidemic, Many Estimates (1EME)
www.lse.ac.uk
September 6, 2025 at 8:06 PM
Since pandemic mortality is clearly still a question people seem to be confused about, this project at the LSE is showing us where we need to go: www.lse.ac.uk/Economic-His... #histmed #PublicHealth #PandemicThinking #ExcessMortality
Reposted by Hampton Gaddy
Following major European pandemics and wars of the 19th and 20th centuries, "recovery times across events averaged approximately seven years and showed no significant statistical differences by event type or sex," find Silva & Aburto in new article:
doi.org/10.1007/s426...
doi.org/10.1007/s426...
Life Expectancy Loss and Recovery by Age and Sex Following Catastrophic Events in Europe during the 19th and 20th Centuries - Canadian Studies in Population
Canadian Studies in Population - Following catastrophic events such as pandemics or wars, a systematic loss in life expectancy at birth ( $$\:{e}_{0}$$ ) can be observed. This study aims to...
doi.org
September 3, 2025 at 10:02 AM
Following major European pandemics and wars of the 19th and 20th centuries, "recovery times across events averaged approximately seven years and showed no significant statistical differences by event type or sex," find Silva & Aburto in new article:
doi.org/10.1007/s426...
doi.org/10.1007/s426...
Reposted by Hampton Gaddy
The pronatalists have done an excellent job of using bad demography to convince the legacy media that low birth rates are a crisis.
They are using bad demography to whitewash their sexism, racism, Christian nationalism, classism, & anti-LGBTQ sentiments.
It’s why my colleagues & I wrote this:
They are using bad demography to whitewash their sexism, racism, Christian nationalism, classism, & anti-LGBTQ sentiments.
It’s why my colleagues & I wrote this:
September 2, 2025 at 1:07 PM
The pronatalists have done an excellent job of using bad demography to convince the legacy media that low birth rates are a crisis.
They are using bad demography to whitewash their sexism, racism, Christian nationalism, classism, & anti-LGBTQ sentiments.
It’s why my colleagues & I wrote this:
They are using bad demography to whitewash their sexism, racism, Christian nationalism, classism, & anti-LGBTQ sentiments.
It’s why my colleagues & I wrote this:
Reposted by Hampton Gaddy
📢 Call for Papers!
Workshop Accuracy of Cause-of-Death Registration: Everyday Conditions, Crises & Epidemics
🗓 18–19 Mar 2026 | Barcelona 🇪🇸
Submit 200–300 word abstracts by 10 Dec 2025 👉 docs.google.com/forms/d/e/1F...
Workshop Accuracy of Cause-of-Death Registration: Everyday Conditions, Crises & Epidemics
🗓 18–19 Mar 2026 | Barcelona 🇪🇸
Submit 200–300 word abstracts by 10 Dec 2025 👉 docs.google.com/forms/d/e/1F...
Workshop ‘Accuracy of Cause-of-Death Registration: Everyday Conditions, Crises, and Epidemics
Please submit your abstract (200-300 words) before 10 December here. We expect to be able to communicate everyone before Christmas about acceptance to the workshop. We anticipate that COST-Action GREA...
docs.google.com
August 29, 2025 at 6:49 AM
📢 Call for Papers!
Workshop Accuracy of Cause-of-Death Registration: Everyday Conditions, Crises & Epidemics
🗓 18–19 Mar 2026 | Barcelona 🇪🇸
Submit 200–300 word abstracts by 10 Dec 2025 👉 docs.google.com/forms/d/e/1F...
Workshop Accuracy of Cause-of-Death Registration: Everyday Conditions, Crises & Epidemics
🗓 18–19 Mar 2026 | Barcelona 🇪🇸
Submit 200–300 word abstracts by 10 Dec 2025 👉 docs.google.com/forms/d/e/1F...
Reposted by Hampton Gaddy
This is such a great idea.
Excess mortality estimates are so crucial... and *so* tricky. We have very little expert consensus about how they should be done. Changing that is a really smart, consequential research frontier to focus effort on.
Excess mortality estimates are so crucial... and *so* tricky. We have very little expert consensus about how they should be done. Changing that is a really smart, consequential research frontier to focus effort on.
📢 Interested in excess mortality methods, and want a challenge? I'm organising the "One Epidemic, Many Estimates" (1EME) project! Register *now* as a many analyst team (submissions due 15 March 2026), and then join us at LSE for a workshop on 21-22 May 2026! (1/n)
www.lse.ac.uk/Economic-His...
www.lse.ac.uk/Economic-His...
One Epidemic, Many Estimates (1EME)
One Epidemic, Many Estimates (1EME)
www.lse.ac.uk
August 27, 2025 at 7:59 PM
This is such a great idea.
Excess mortality estimates are so crucial... and *so* tricky. We have very little expert consensus about how they should be done. Changing that is a really smart, consequential research frontier to focus effort on.
Excess mortality estimates are so crucial... and *so* tricky. We have very little expert consensus about how they should be done. Changing that is a really smart, consequential research frontier to focus effort on.
Reposted by Hampton Gaddy
🗣️Exciting PhD opportunity!
Join @lshtm.bsky.social PSG and @mpidr.bsky.social as a PhD student/Research Assistant on an 3-year project leading to a funded PhD. The role focuses on developing cutting-edge methods to model health & mortality in low-income countries.
jobs.lshtm.ac.uk/Vacancy.aspx...
Join @lshtm.bsky.social PSG and @mpidr.bsky.social as a PhD student/Research Assistant on an 3-year project leading to a funded PhD. The role focuses on developing cutting-edge methods to model health & mortality in low-income countries.
jobs.lshtm.ac.uk/Vacancy.aspx...
Job Opportunity at LSHTM: Research Assistant
The London School of Hygiene & Tropical Medicine (LSHTM) is one of the world’s leading public health universities. Our mission is to improve health and health equity in the UK and worldwide; working i...
jobs.lshtm.ac.uk
August 27, 2025 at 9:39 AM
🗣️Exciting PhD opportunity!
Join @lshtm.bsky.social PSG and @mpidr.bsky.social as a PhD student/Research Assistant on an 3-year project leading to a funded PhD. The role focuses on developing cutting-edge methods to model health & mortality in low-income countries.
jobs.lshtm.ac.uk/Vacancy.aspx...
Join @lshtm.bsky.social PSG and @mpidr.bsky.social as a PhD student/Research Assistant on an 3-year project leading to a funded PhD. The role focuses on developing cutting-edge methods to model health & mortality in low-income countries.
jobs.lshtm.ac.uk/Vacancy.aspx...
📢 Interested in excess mortality methods, and want a challenge? I'm organising the "One Epidemic, Many Estimates" (1EME) project! Register *now* as a many analyst team (submissions due 15 March 2026), and then join us at LSE for a workshop on 21-22 May 2026! (1/n)
www.lse.ac.uk/Economic-His...
www.lse.ac.uk/Economic-His...
One Epidemic, Many Estimates (1EME)
One Epidemic, Many Estimates (1EME)
www.lse.ac.uk
August 27, 2025 at 8:54 AM
📢 Interested in excess mortality methods, and want a challenge? I'm organising the "One Epidemic, Many Estimates" (1EME) project! Register *now* as a many analyst team (submissions due 15 March 2026), and then join us at LSE for a workshop on 21-22 May 2026! (1/n)
www.lse.ac.uk/Economic-His...
www.lse.ac.uk/Economic-His...
Reposted by Hampton Gaddy
#LifeExpectancy rose rapidly in the first half of the 20th century. But will those born between 1939 and 2000 benefit from these rapid gains in #longevity? A recent study suggests that none of these #generations will reach 100 years of age on average. 1/2 www.demogr.mpg.de/go/LifeExpectancy2025
August 26, 2025 at 6:43 AM
#LifeExpectancy rose rapidly in the first half of the 20th century. But will those born between 1939 and 2000 benefit from these rapid gains in #longevity? A recent study suggests that none of these #generations will reach 100 years of age on average. 1/2 www.demogr.mpg.de/go/LifeExpectancy2025
Reposted by Hampton Gaddy
This piece in WaPo by @zhoyoyo.bsky.social, "The two reasons Americans aren’t having babies, according to data," has an unusual amount of wrong things, starting with the incorrectly labeled figure at the very top
www.washingtonpost.com/opinions/int...
www.washingtonpost.com/opinions/int...
August 14, 2025 at 4:43 PM
This piece in WaPo by @zhoyoyo.bsky.social, "The two reasons Americans aren’t having babies, according to data," has an unusual amount of wrong things, starting with the incorrectly labeled figure at the very top
www.washingtonpost.com/opinions/int...
www.washingtonpost.com/opinions/int...
Reposted by Hampton Gaddy
coincidentally my historical research today led me to this, from 1970
August 5, 2025 at 5:57 PM
coincidentally my historical research today led me to this, from 1970
Reposted by Hampton Gaddy
Want to know why demographers aren't panicking over low birth rates? @lesja.bsky.social, @shelleydclark.bsky.social, & I have a new piece in @theconversation.com explaining the faulty logic that underlies the low birth rate-induced population panic than fuels the pronatalism movement. 1/n
Fears that falling birth rates in US could lead to population collapse are based on faulty assumptions
While the changes in population structure that accompany low birth rates are real, the impact of these changes has been dramatically overstated.
theconversation.com
July 25, 2025 at 1:06 PM
Want to know why demographers aren't panicking over low birth rates? @lesja.bsky.social, @shelleydclark.bsky.social, & I have a new piece in @theconversation.com explaining the faulty logic that underlies the low birth rate-induced population panic than fuels the pronatalism movement. 1/n
Reposted by Hampton Gaddy
🧮 A new preprint of my first dissertation chapter "From disparate lists to population estimates: A multiple systems estimation workflow for mortality analysis in conflict settings” is now online.
doi.org/10.31235/osf...
doi.org/10.31235/osf...
June 4, 2025 at 3:48 PM
🧮 A new preprint of my first dissertation chapter "From disparate lists to population estimates: A multiple systems estimation workflow for mortality analysis in conflict settings” is now online.
doi.org/10.31235/osf...
doi.org/10.31235/osf...
Reposted by Hampton Gaddy
Over the weekend, BBC Radio 4’s Any Questions programme - not typically a bastion of far-right values - included uncontested claims of how “low birthrates are the biggest problem the UK faces”. Worrying how quickly this view, rejected by experts in demography, is becoming mainstream
Monday briefing: What Nigel Farage’s new obsession with nativism could mean for the UK
In today’s newsletter: Reform’s latest policy shift echoes strategies seen in Europe’s far right. Will this approach gain traction in the UK?
www.theguardian.com
June 2, 2025 at 6:30 PM
Over the weekend, BBC Radio 4’s Any Questions programme - not typically a bastion of far-right values - included uncontested claims of how “low birthrates are the biggest problem the UK faces”. Worrying how quickly this view, rejected by experts in demography, is becoming mainstream
Great piece on how to get the most out of many-analyst projects! Any similar commentaries out there? I might be cooking up my own many-analyst project for demography soon 🍴
Kowall et al. published a multi-analyst epi study on the effect of marital status on cardiovascular disease (link.springer.com/article/10.1...). What can be learned from this effort? Check out our new commentary! link.springer.com/article/10.1...
with @mendelrandom.bsky.social & Marcus Munafò
with @mendelrandom.bsky.social & Marcus Munafò
![What can be learned when multiple analysts arrive at different estimates
Kowall et al. (2025) have brought the multi-analyst approach to epidemiology, with instructive results. With this approach, multiple researchers analyze the same data set to answer the same research question. Or, at least, what appears to be the same research question. In fact, the very first paper that popularized this approach [1] has been criticized for using a vague research question (“Are soccer referees more likely to give red cards to players with dark skin tone than light skin tone?”), which apparently led the analysts to try to answer quite different questions—from a simple question about a bivariate statistical association to much more complex causal questions about racial bias [2].
In contrast, the research question passed on to analysts in Kowall et al. (2025) seems less ambiguous: Does marital status influence the incidence of cardiovascular disease? But less ambiguous does not equal unambiguous. Considerable...](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gz53felr7btxgmbxae5aooxi/bafkreidvs4c7wvoh63tr2ptmvnnl5hya246ofttwyzlvotkmqhnpwgbf4a@jpeg)
May 30, 2025 at 8:37 AM
Great piece on how to get the most out of many-analyst projects! Any similar commentaries out there? I might be cooking up my own many-analyst project for demography soon 🍴