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November 17, 2022

USA: Being Obese in Early Adulthood Increases the Chance of Remaining Childless at 40 and beyond

A team of researchers used longitudinal survey data from the late 1950s US birth cohort to show how sex and ethnicity relate to how weight (BMI) during early adulthood predicts later childlessness. The study was recently published in the journal “Population Studies”. more

November 07, 2022

Is Facebook’s Advertising Data Accurate Enough for Use in Social Science?

Researchers of the Digital and Computational Demography Lab at the Max Planck Institute for Demographic Research (MPIDR) and colleagues recently published a paper in the “Journal of the Royal Statistical Society: Series A” which systematically assesses the quality of Facebook’s ads data for use in social science research. They assessed the accuracy of this data by comparing self-reported and Facebook-classified demographic information on sex, age and region of residence of more than 133,000 users recruited via an online survey. Their results suggest that Facebook’s ads data can be used when additional steps are taken to validate the accuracy of the information under consideration.  more

November 03, 2022

Falling Birth Rates in Northern Europe

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Birth rates in Scandinavia used to be the highest in Europe for long, but since 2010 they have declined faster than expected, such as in Finland where they have slumped to an all-time low. A study by the Max Planck Institute for Demographic Research now investigates the extent to which there are differences in fertility at the sub-national regional level. more

November 01, 2022

Mental Health of Single Mothers: Why Looking at the Pathways into Single Motherhood and Later Partnership Status Matters

Separation and widowhood affects the mental health of women and those who then become single mothers have an especially long lasting and harmful impact. These are the findings in a recent study by MPIDR Researcher Mine Kühn and colleagues which analyzes up-to-date Finnish register data. more

October 27, 2022

Increased Obesity Prevalence Exacerbates Depression Risk for Baby Boomers: A Counterfactual Study

MPIDR PhD-Student Maria Gültzow and colleagues used a counterfactual analysis in their recent study published in “Epidemiology” to assess the influence of generational differences in health behavior on the depression risk in the United States of Baby Boomers, and the Great and Silent generations. more

October 17, 2022

COVID-19: Life Expectancy Mostly Continued to Decline in 2021 Bingol

Globally, life expectancy did not recover last year after the mortality shock due to the 2020 pandemic. At the same time, differences between countries are widening. A historical comparison of data, however, offers hope for rapid improvement. Those are the findings of a new study by MPIDR Researcher Jonas Schöley and his colleagues at Oxford University's Leverhulme Centre for Demographic Science that examined changes in life expectancy in 29 countries, published in the journal “Nature Human Behaviour”. more

September 21, 2022

Swedish Pensions: Large Gap in Lifetime Pension due to Lifespan Inequality

The better educated and richer you are the longer you live. The longer you live, the more pension income you receive over your lifetime. For the first time, Jiaxin Shi, a PhD Student at the MPIDR calculated the total differences in lifetime pensions related to education and earnings in Sweden. He found the discrepancy between lifetime pensions between men born in 1925 with nine or less years of education and men with university level education was approximately 3 million SEK (about 375,000 USD). Nearly one quarter of this difference was because those with better education lived longer, with differences in income accounting for most of total pension income. more

September 14, 2022

How Does Delayed Parenthood Impact Gender Inequality in Education and on the Labor Market?

A team led by MPIDR Researcher Jessica Nisén discovered that delayed parenthood exacerbates the educational advantage of women compared to men and attenuates the income advantage of men. The researchers based their analysis on a novel method and high-quality Finnish register data. more

August 10, 2022

COVID-19: Release of the COVerAGE-Database Website


The website for the COVerAGE-Database, a global demographic database on COVID-19, was published recently by the Max Planck Institute for Demographic Research (MPIDR) in Rostock, Germany. More than 70 researchers from around the world collaborated to collect COVID-19 data from 120 countries, standardize it and making it available online. more

July 20, 2022

COVID-19 Lockdown in Germany: The Mental Health of Young Mothers Suffers

Daycare centers and schools closed, little support for childcare outside the home, and frequent remote work from home: this situation during the first COVID-19 wave in the spring of 2020 led to a significant increase in stress and exhaustion in Germany, especially among mothers of young children living in partnerships. These are the findings of a new study by MPIDR Researchers Nicole Hiekel and Mine Kühn. more


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The Max Planck Institute for Demographic Research (MPIDR) in Rostock is one of the leading demographic research centers in the world. It's part of the Max Planck Society, the internationally renowned German research society.