Hi! I'm Jonas Schöley, PhD, Demographer interested in mortality, uncertainty, dataviz, statistical computing. Research Scientist at MPIDR. Below you can see what I've been up to:
Publication • Jun 1, 2025

The impact of population heterogeneity on the age trajectory of neonatal mortality: a study of US births 2008-2014

Jonas Schöley (2025). Demographic Research, .

I contribute an empirical test of the hypothesis that the age trajectory of mortality in the days and weeks following birth is an artifact of mortality selection.


Media • Apr 3, 2025

Trump-Politik: Folgen für die Forschung in Mecklenburg-Vorpommern

Apr 3, 2025. NDR. Radio interview.


Media • Mar 11, 2025

Auswirkungen der COVID-19-Pandemie auf verlorene Lebensjahre in Europa

Mar 11, 2025. Science Media Center. Written Interview.


Media • Feb 4, 2025

Zahl der Totgeburten in Deutschland gestiegen

Feb 4, 2025. MDR. Radio interview.


Publication • Jan 21, 2025

Stillbirth rate trends across 25 European countries between 2010 and 2021: the contribution of maternal age and multiplicity

Maxi S. Kniffka, Jonas Schöley, Susie Lee, Loes C.M. Bertens, Jasper V. Been, Jóhanna Gunnarsdóttir (2025). European Journal of Public Health, 10.1093/eurpub/ckae214.

Stillbirth rates have stalled or increased in some European countries during the last decade. Why?


Publication • Dec 11, 2024

Empirical prediction intervals applied to short term mortality forecasts and excess deaths

Ricarda Duerst, Jonas Schöley (2024). Population Health Metrics, 10.1186/s12963-024-00355-9.

We propose the use of empirical prediction intervals for the study of weekly expected and excess deaths and show the superior calibration of these intervals compared to parametric intervals. Further, we use the empirical PIs to quantify the probability of detecting 10% excess deaths in a given week, given pre-pandemic mortality trends.


Publication • Sep 27, 2024

Population age structure dependency of the excess mortality P-score

Niklas Ullrich-Kniffka, Jonas Schöley (2024). Population Health Metrics, 10.1186/s12963-024-00346-w.

We present formal and empirical results on the population structure bias of the P-score with a special focus on cross-country comparisons during the COVID-19 pandemic in Europe.


Media • May 22, 2024

Lebenserwartung in Deutschland sinkt weiter

May 22, 2024. Stuttgarter Zeitung. Written interview.


Media • Jan 10, 2024

Die Toten der Pandemie

Jan 10, 2024. Süddeutsche Zeitung. Interview.


Media • Aug 10, 2023

Was passierte im Juni 2021?

Aug 10, 2023. Frankfurter Allgemeine Sonntagszeitung. Interview.


Publication • Jul 24, 2023

Rising Stillbirth Rates in Germany. An Analysis of Changes in the Age and Nationality Structure of Women Giving Birth Between 2009 and 2018

Maxi S. Kniffka, Roland Rau, Mine Kühn, Jonas Schöley, Natalie Nitsche (2023). Deutsches Ärzteblatt, 10.3238/arztebl.m2023.0054.

During the last decade, a continuous increase in the rate of stillbirths has been observed in Germany. So far, the reasons for this trend are not well understood…


Media • Jun 20, 2023

Studie zur Übersterblichkeit sorgt für Wirbel

Jun 20, 2023. tagesschau.de. Interview.


Media • Mar 23, 2023

Wunschliste für die nächste Pandemie

Mar 23, 2023. Süddeutsche Zeitung. Written interview.


Publication • Feb 28, 2023

Bevölkerungsalterung unter Pandemiebedingungen

Jonas Schöley (2023). Wirtschaftsdienst, 10.2478/wd-2023-0038.

Wie hoch ist ein eventuelles Bevölkerungsdefizit unter Rentner:innen durch deren unerwartet frühes Ableben während der Pandemie und ändert sich unter pandemischen Bedingungen grundsätzlich etwas an den Herausforderungen des Rentensystems? Wir schauen auf die demografische Ausgangslage.


Publication • Feb 11, 2023

Conflicting COVID-19 excess mortality estimates

Jonas Schöley, Ariel Karlinsky, Dmitry Kobak, Charles Tallack (2023). The Lancet, 10.1016/S0140-6736(23)00116-2.

We believe that the estimates of the COVID-19 Excess Mortality Collaborators are unreliable and should not be used for any policy evaluation.


Media • Feb 1, 2023

How the U.S. Lost Years of Life

Feb 1, 2023. Scientific American. Interview.


Media • Jan 31, 2023

Blue Zones - Hundert Jahre alt und gesund

Jan 31, 2023. 3sat Nano. TV interview.


Media • Oct 18, 2022

Lebenserwartung in der Pandemie deutlich zurückgegangen

Oct 18, 2022. Deutschlandfunk. Radio interview.


Publication • Oct 17, 2022

Life expectancy changes since COVID-19

Jonas Schöley, José Manuel Aburto, Ilya Kashnitsky, Maxi S Kniffka, Luyin Zhang, Hannaliis Jaadla, Jennifer B Dowd, Ridhi Kashyap (2022). Nature human behaviour, 10.1038/s41562-022-01450-3.

The COVID-19 pandemic triggered an unprecedented rise in mortality that translated into life expectancy losses around the world, with only a few exceptions. We estimate life expectancy changes in 29 countries since 2020, attribute them to mortality changes by age group and compare them with historic life expectancy shocks.


Publication • Oct 13, 2022

Life expectancy declines in Russia during the COVID-19 pandemic in 2020

José Manuel Aburto, Jonas Schöley, Ilya Kashnitsky, Ridhi Kashyap (2022). International Journal of Epidemiology, 10.1093/ije/dyac055.

How did Russia fare during the first year of the pandemic?


Publication • Sep 26, 2021

Quantifying impacts of the COVID-19 pandemic through life-expectancy losses: a population-level study of 29 countries

José Manuel Aburto, Jonas Schöley, Ilya Kashnitsky, Luyin Zhang, Charles Rahal, Trifon I Missov, Melinda C Mills, Jennifer B Dowd, Ridhi Kashyap (2021). International Journal of Epidemiology, 10.1093/ije/dyab207.

The COVID-19 pandemic triggered significant mortality increases in 2020 of a magnitude not witnessed since World War II in Western Europe or the breakup of the Soviet Union in Eastern Europe.


Publication • Jun 9, 2021

Robustness and bias of European excess death estimates in 2020 under varying model specifications

Jonas Schöley (2021). MedRxiv, 10.1101/2021.06.04.21258353.

Using weekly death counts from 20 European countries, we evaluate the robustness of excess death estimates to the choice of model for expected deaths and perform a cross-validation analysis to assess the error and bias in each model’s predicted death counts.


Publication • Mar 9, 2021

The centered ternary balance scheme: A technique to visualize surfaces of unbalanced three-part compositions

Jonas Schöley (2021). Demographic Research, 10.4054/DemRes.2021.44.19.

By reprojecting an unbalanced compositional data set around its center of location and visualizing the transformed data with a standard ternary balance scheme, the internal variation of the data becomes visible. An appropriate centering operation has been defined within the field of compositional data analysis.


Publication • Jan 19, 2021

Estimating the burden of the COVID-19 pandemic on mortality, life expectancy and lifespan inequality in England and Wales: a population-level analysis

José Manuel Aburto, Ridhi Kashyap, Jonas Schöley, Colin Angus, John Ermisch, Melinda C Mills, Jennifer Beam Dowd (2021). Journal of Epidemiology & Community Health, 10.1136/jech-2020-215505.

We estimate the impact of the COVID-19 pandemic on mortality, life expectancy and lifespan inequality in England & Wales 2020.


Publication • Nov 19, 2019

Patient self-testing of white blood cell count and differentiation: A study of feasibility and measurement performance in a population of Danish cancer patients

Thea Otto Mattsson, Christina Louise Lindhart, Jonas Schöley, Lennart Friis-Hansen, Jørn Herrstedt (2019). European Journal of Cancer Care, 10.1111/ecc.13189.

This study sought to evaluate measurement properties and feasibility of patients’ self-testing using a point-of-care testing (POCT) device.


Publication • May 1, 2019

But Why? Design choices made while creating 'Regional population structures at a glance'

Jonas Schöley, Ilya Kashnitsky (2019). New Generations in Demography, 10.18267/pu.2019.fis.2302.6.

Post-publication design self critique of a map that went viral.


Blog • Feb 13, 2019

But Why? Design choices made while creating "Regional population structures at a glance"

Jonas Schöley, Ilya Kashnitsky.

In this essay we want to explain the design choices we made during the creation of the map, explore and discuss alternative designs and evaluate our visualization against the goals we had when starting this project.


Media • Nov 10, 2018

Wien, größte Stadt des Burgenlandes: Über "Zuagraste" in der Hauptstadt

Nov 10, 2018. Stadt Wien. Mention.


Publication • Sep 20, 2018

An R package for efficient estimation of smooth distributions from coarsely binned data

Marius D. Pascariu, Maciej J. Dańko, Jonas Schöley, Silvia Rizzi (2018). Journal of Open Source Software, 10.21105/joss.00937.

ungroup is an R library that introduces a versatile method for ungrouping histograms.


Blog • Jul 31, 2018

Creating equal-area grids

Jonas Schöley.

I made a rookie mistake: I’ve accidentally created a grid where the grid cells have different areas, thereby compromising the bubble grid map which is supposed to show counts over equal areas. Here’s a demonstration of the wrong and the correct approach…



Blog • Jul 3, 2018

Bubble-grid versus choropleth maps

Jonas Schöley.

Bertin’s work continues to inspire me to try out alternative visual mappings. The bubble-grid idea is such an experiment in perception.


Blog • Jun 30, 2018

Bubble-grid-maps

Jonas Schöley.

I want to show the population density across Europe in a stylized fashion using a regular grid of bubbles sized according to population counts.


Publication • Aug 22, 2017

A unified framework of demographic time

Tim Riffe, Jonas Schöley, Francesco Villavicencio (2017). Genus, 10.1186/s41118-017-0024-4.

Period, birth cohort, age, lifespan, time until death, death cohort unified in one expanded Lexis identity.


Blog • Jun 28, 2017

The Unknown Pleasures of Demography

Jonas Schöley.

And who’s to say the human age-distribution of death isn’t as interesting as cosmic pulsars? Let me show you the unknown pleasures of demography.


Publication • Feb 17, 2017

Visualizing compositional data on the Lexis surface

Jonas Schöley, Frans Willekens (2017). Demographic Research, 10.4054/DemRes.2017.36.21.

We introduce techniques for visualizing compositional data on a period-age grid to the field of demography and demonstrate the usefulness of the techniques by performing an exploratory analysis of age-specific French cause-of-death patterns across the 20th century.”


Blog • Jan 29, 2016

My Reply to flowingdata's Causes of Death Chart

Jonas Schöley.

Complementing flowingdata’s causes of death chart I visualize US deaths by cause. I focus on raw counts and the age distribution of deaths.


Blog • Jan 8, 2016

How I Started Learning Data Visualization

Jonas Schöley.

To learn the craft of data visualization one has to know where to start. The following list is comprised of items which helped me in gaining some skills


Blog • Oct 15, 2015

The Age Pattern of Human Fetal- and Infant Mortality

Jonas Schöley.

Using US microdata on fetal- and infant mortality I constructed a cohort of individuals who where conceived in the year 2009.


Blog • Sep 9, 2015

The Human Mortality Explorer

Jonas Schöley.

Visualizing the risk of dying across age and time around the globe. Compare countries with each other and dig into the gender gap of mortality risk. Build with R + shiny and not possible without the Human Mortality Database.


Blog • Sep 7, 2015

Greatest Beer Selection

Jonas Schöley.


Blog • Aug 12, 2015

Tiny Twin Workstation

Jonas Schöley.


Blog • Jul 7, 2015

10 PRINT in R

Jonas Schöley.

Currently I’m reading 10 PRINT, “a book about a one-line Commodore 64 BASIC program.” I covered the program using R.


Blog • Jun 12, 2015

Aiming High

Jonas Schöley.

I’m not a doctor yet but it’s nice (if unintended) that my talk at this years PAA conference lead to people thinking otherwise.


Media • Jun 11, 2015

From Population Pyramids to Ternary Plots: Visualizing Data for Demography

Jun 11, 2015. DHS Program Blog. Mention.


Blog • May 5, 2015

San Diego. Panoramic II

Jonas Schöley.

The experience of seeing the Pacific for the first time was making me forget my burns and dry throat.


Blog • May 5, 2015

San Diego. Panoramic I

Jonas Schöley.

This city is scenic. I went to Balboa Park. It is a huge green square filled with Spanish, colonial architecture, huge trees and flowers of all varieties. Admission is, yet again, completely free which seems just incredibly generous given that this is one of the most beautiful and well-preserved parks I’ve ever been to.


Blog • Apr 27, 2015

Stochasticity versus Determination

Jonas Schöley.

Last week I had an argument about the statistical interpretation of chance and pre-determination. Are they an attribute of the processes/phenomena we model or are they a product of the way we model a process? I believe the latter.


Blog • Apr 27, 2015

San Diego. First Impressions

Jonas Schöley.

The first thing I noticed about San Diego was its nice temperature and climate, even at night. The second impression I received during my cab ride from the airport to the hotel along the Pacific Highway: “This looks like GTA: Vice City


Blog • Oct 17, 2014

Ankunft in Warschau

Jonas Schöley.

Pałac Kultury i Nauki


Blog • Jan 15, 2014

Zwischenraum Jam

Jonas Schöley.

Ein Jazz Jam in seiner vollen 13 minütigen Pracht. Entstanden zwischen Weihnachten und Neujahr bei mir im Zwischenraum. Simon am Piano und ich an der Gitarre.


Blog • Dec 27, 2013

Anatomie einer Sammelkarte

Jonas Schöley.

Sammelkarten sind fester Bestandteil der Fußballfolklore. Mit Rahmen und Logo in Szene gesetzt, werden die abgebildeten Personen in einen Sport-Kosmos integriert, der über das eigentliche Spiel hinaus geht.


Blog • Jul 24, 2013

Verbergen

Jonas Schöley.

“(…) oder haben sie etwas zu verbergen?”

In der jüngsten Zeit haben solche Worte wieder an Prominenz gewonnen. Die dahinter stehende Argumentation “Wer nichts zu befürchten hat, der hat auch nichts zu verbergen” (vice versa) wird immer dann von oben herab gepredigt, wenn es um die Aufgabe von Privatheit gegenüber dem Staat und seinen Organen geht.


Blog • Jun 11, 2013

Tutorial Fußballfotografie

Jonas Schöley.

Seit einem Jahr fotografiere ich die Heimspiele der Frauen vom RFC Rostock. In dieser Zeit habe ich ein paar Erfahrungen gesammelt, die ich hier festhalten möchte. Keine Profitipps, sondern lediglich die ersten Schritte, die ich im Bereich der Fußballfotografie gemacht habe.


Blog • Jun 9, 2013

Fixing Commander Keen on Steam

Jonas Schöley.

Commander Keen. Great game, but with performance issues since I transitioned from Windows 7 to 8: Sluggish motion, stuttering sound… Let’s fix that.


Blog • Jun 7, 2013

Blame

Jonas Schöley.

Mein Freund Hannes hat mich neulich gefragt, ob ich nicht eine Tanzimprovisation von ihm vertonen möchte… Ja.


Blog • Aug 21, 2012

Nietzscheente. Nag, nag

Jonas Schöley.


Blog • Apr 13, 2012

Lomoh 1

Jonas Schöley.

Evil Fork


Blog • Mar 24, 2012

ICD 10 F64. Wer ist hier krank? (Update)

Jonas Schöley.

In Berlin will das Jugendamt nach wie vor ein Elfjähriges transexuelles Mädchen gegen den eigenen Willen und den der Mutter zwangsweise in die Psychiatrie einweisen – mit anschließendem Aufenthalt in einer Pflegefamilie.


Blog • Jan 19, 2012

ICD 10 F64. Wer ist hier krank?

Jonas Schöley.

Es ist falsch, Transsexuellen eine geschlechtsangleichende Maßnahme zu verwehren, weil sie sich eines Identitätsmerkmals bedienen (dem Geschlecht), welches man als soziale Unterscheidung ablehnt. An dem von der TAZ geschilderten Fall ist deutlich zu sehen, dass Transsexualität keine Frage von geschlechtlichen Rollenstereotypen oder Rollenmustern ist (vor der Wahl stehend mit Puppen oder Autos zu spielen entscheidet sich das Mädchen genervt für ein herumliegendes Puzzle), sondern viel rudimentärer auf einem vorgesellschaftliches Geschlechtsempfinden beruht, welches nicht mit dem biologischen Geschlecht konform geht.


Blog • Jan 15, 2012

Essaysammlung 2009 bis 2011

Jonas Schöley.

Hier ein paar Essays, die sich über die Zeit des Studiums der Sozialwissenschaften angesammelt haben.

  • Der Fremde in der Großstadt?
  • Deutschland: Global Player ohne Global Cities?
  • Sozialkapital bei der Betrachtung von Arbeitslosigkeit
  • Über die Vorhersagbarkeit sozialen Handelns
  • Der Geburtenrückgang in westlichen Industrieländern: Zwei Erklärungsmodelle im Vergleich
  • Das Internet im Kontext der Differenzierung und Individualisierung des Lebenslaufes am Beispiel von Online-Partnerbörsen und Telecommuting
  • Die Abschwächung des Effektes der Bildungsexpansion auf den Auszug aus dem Elternhaus


Blog • Sep 22, 2011

Objektivität und Recht

Jonas Schöley.

Ein sich als Hardliner profilierender Gov’nor, eine emotional – weil selbst betroffen – ermittelnde Polizei, ein Hauptzeuge welcher erst einmal motiviert war, seinen eigenen Arsch zu retten und keine Spur dieser wundervoll eindeutigen forensischen Beweisführung, welche das Fernsehen regelmäßig als Beweisfindungsalltag darstellt – der Fall Troy Davies.


Blog • Apr 29, 2011

Man ist ja immer so wichtig heutzutage

Jonas Schöley.

Was haben Eisbären und Flaschensammler gemeinsam? Genau! Sie verfassen keine soziologischen Theorien und sind daher nicht wichtig.


Blog • Mar 17, 2011

Strahlung in Tokio

Jonas Schöley.

During the Fukushima nuclear disaster I collected the data from various Geiger-counter-live-streams in Japan and displayed these informations with the help of the statistical software R.