Martin Kolk

ORCID: 0000-0002-7175-4040
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About
Contact & Profiles
Research Areas
  • Family Dynamics and Relationships
  • Demographic Trends and Gender Preferences
  • Birth, Development, and Health
  • Intergenerational Family Dynamics and Caregiving
  • Health disparities and outcomes
  • Global Health Care Issues
  • Insurance, Mortality, Demography, Risk Management
  • Intergenerational and Educational Inequality Studies
  • Gender, Labor, and Family Dynamics
  • Migration and Labor Dynamics
  • Reproductive Health and Technologies
  • Migration, Aging, and Tourism Studies
  • Retirement, Disability, and Employment
  • Global Maternal and Child Health
  • Historical Economic and Social Studies
  • COVID-19 epidemiological studies
  • Food Security and Health in Diverse Populations
  • Social and Educational Sciences
  • Rural development and sustainability
  • Migration, Health and Trauma
  • Religion, Spirituality, and Psychology
  • Assisted Reproductive Technology and Twin Pregnancy
  • Urban, Neighborhood, and Segregation Studies
  • European and International Law Studies
  • Income, Poverty, and Inequality

Stockholm University
2016-2025

Åbo Akademi University
2021-2025

Institute for Futures Studies
2017-2025

Studi
2017-2023

Swedish Collegium for Advanced Study
2020

University of Turku
2020

University of Oslo
2020

Max Planck Institute for Demographic Research
2017-2020

Rockwool Foundation
2020

University of Lausanne
2020

Abstract As global deaths from COVID-19 continue to rise, the world’s governments, institutions, and agencies are still working toward an understanding of who is most at risk death. In this study, data on all recorded in Sweden up May 7, 2020 linked high-quality accurate individual-level background administrative registers total population. By means survival analysis we demonstrate that being male, having less individual income, lower education, not married independently predict a higher...

10.1038/s41467-020-18926-3 article EN cc-by Nature Communications 2020-10-09

Abstract During the 2010s, fertility rates fell across Nordic region. The onset of these declines seems linked to Great Recession 2008–2009, but their continuation cannot easily be subsequent economic change. 1990s, too, brought episodes crises region that were followed by different degrees decline. In this study, we provide an empirical overview parity-, age- and education-specific developments in five countries wake recessions 2008 early respectively. We demonstrate a high degree...

10.1007/s10680-020-09570-0 article EN cc-by European Journal of Population / Revue européenne de Démographie 2020-11-19

Housing characteristics and neighbourhood context are considered risk factors for COVID-19 mortality among older adults. The aim of this study was to investigate how individual-level housing associated with in

10.1016/s2666-7568(20)30016-7 article EN cc-by The Lancet Healthy Longevity 2020-10-27

Abstract A large body of research has found an association between short birth intervals and the risk infant mortality in developing countries, but recent work on other perinatal outcomes from highly developed countries called these claims into question, arguing that previous studies have failed to adequately control for unobserved heterogeneity. Our study addresses this issue by estimating within-family models a sample 4.5 million births 77 at various levels development. We show after...

10.1007/s13524-019-00798-y article EN cc-by Demography 2019-07-03

Abstract In this study, we provide demographic insight into the still relatively new family form of same-sex marriage. We focus on period trends in marriage formation and divorce during 1995–2012 Sweden role childbearing unions. The begins with introduction registered partnership for couples also covers formal 2009. use register data complete population to contrast patterns male female divorce. show that union increased rapidly over period, while unions less. legislation 2009 appears have...

10.1007/s13524-019-00847-6 article EN cc-by Demography 2020-01-09

A growing body of evidence suggests that reproductive history influences post-reproductive mortality. potential explanation for this association is confounding by socioeconomic status in the family origin, as related to both fertility behaviours and long-term health. We examine relationship between age at first birth, completed parity, mortality address role origin. use Swedish population register data men women born 1932-1960, all-cause cause-specific The contributions our study are a...

10.1016/j.socscimed.2016.02.043 article EN cc-by-nc-nd Social Science & Medicine 2016-03-02

The study of the intergenerational transmission fertility has a long history in demography, but until now research focused primarily on parents' influence their children's patterns and largely overlooked possible other kin. This examines from parents, grandparents, uncles, aunts, using event models to determine risk first, second, third births. Swedish register data are used 1970-82 birth cohorts. findings indicate strong associations between index persons that also independent completed...

10.1080/00324728.2013.819112 article EN Population Studies 2013-08-20

10.1016/j.rssm.2013.09.006 article EN Research in Social Stratification and Mobility 2013-10-26

Correlations in family size across generations could have a major influence on human population the future. Empirical studies shown that associations between fertility of parents and children are substantial growing over time. Despite their potential long-term consequences, intergenerational correlations largely been ignored by researchers. We present model transition as cultural process acting new lifestyles associated with fertility. Differences parental social influences acquisition these...

10.1098/rspb.2013.2561 article EN Proceedings of the Royal Society B Biological Sciences 2014-01-29

This study makes a contribution to the demography and geography of kinship by studying how internal migration shape geographical availability kin in contemporary Sweden. Age structures an individual's relationship with their parents other kin, this is reflected distance varies over life course. uses longitudinal approach which siblings, parents, grandparents measured for same individuals at different ages. The follows all men women Sweden born 1970 (N = 74,406) from age 10 (in 1980) 37...

10.1002/psp.2020 article EN Population Space and Place 2016-02-26

This study uses income accumulated over ages 20–60 to examine whether richer or poorer individuals have more children. Income histories are calculated using yearly administrative register data from contemporary Sweden for cohorts born 1940–70. Differences by parity and distribution examined separately sex. There is a strong positive gradient between disposable (and lesser extent earnings) fertility men in all gradual transformation negative women. In particular, incomes substantially lower...

10.1080/00324728.2022.2134578 article EN Population Studies 2022-11-15

Abstract Research has shown that married individuals live longer lives than unmarried women and men. A smaller number of studies have included non-marital cohabitation found their mortality falls between the other groups. There are indications cohabiting population is diverse in terms risk, yet very little known about how association related to age stages life course. Sweden a forerunner family trends, this first study examines Swedish context. Using register data for years 2012–2017, we...

10.1007/s10680-024-09722-6 article EN cc-by European Journal of Population / Revue européenne de Démographie 2025-01-14

Abstract We examine the prevalence of gender transitions in Sweden over time and document sociodemographic characteristics people transitioning different periods. Using administrative data covering transgender population from 1973 through 2020, we analyze two common events a transition: earliest diagnosis incongruence change legal gender. Our research note presents three main findings. First, measured rates diagnoses changes are relatively low all periods, although they have increased...

10.1215/00703370-11850105 article EN Demography 2025-03-14

10.1007/s10680-015-9339-z article EN European Journal of Population / Revue européenne de Démographie 2015-08-28

A growing literature has demonstrated a relationship between parity and mortality, but the explanation for that remains unclear. This study aims to pick apart physiological social explanations parity–mortality by examining mortality of parents who adopt children, have no biological in comparison with children. Using Swedish register data, we post-reproductive amongst women men from cohorts born 1915 1960, over ages 45–97. Our results show relative risks adoptive are always lower than those...

10.1007/s10680-018-9469-1 article EN cc-by European Journal of Population / Revue européenne de Démographie 2018-02-21

The authors use administrative data linked to parish records from northern Sweden study how persistent inequality is across multiple generations in education, occupation, and wealth, going historical contemporary time. cover seven allow the follow ancestors of individuals living around new millennium back more than 200 years, covering mid-18th century 21st century. In a sample 75,000 traceable descendants, they analyze (a) up fifth cousin correlations (b) dynastic over based on aggregations...

10.1086/724835 article EN American Journal of Sociology 2023-05-01

Given that surprisingly little is known about the demography of human kinship, we provide a demographic account kinship networks individuals in Sweden 2017 across sex and cohort between ages 0 102. We used administrative register data full population to first enumeration for complete based on empirical data. created ego-focused children, parents, siblings, grandchildren, grandparents, aunts uncles, nieces nephews, cousins. show average number kin different types, distribution kin, changes...

10.1215/00703370-10955240 article EN Demography 2023-09-08

Abstract We use longitudinal data on religious affiliation in Finland to examine childbearing behavior. All analyses are based detailed fertility information from the Finnish national register of each person’s denomination for men and women born 1956–1975. identify higher according parity among members Evangelical Lutheran state church other Protestant churches, lower individuals with no affiliation. Most groups—Orthodox Christians, Jews, Muslims, adherents Eastern religions—have...

10.1007/s10680-023-09693-0 article EN cc-by European Journal of Population / Revue européenne de Démographie 2024-02-19

Objectives This study examines if there exists a positive association between socioeconomic status and the proportion of male births in humans, as proposed by Trivers Willard 1973, using individual‐level data drawn from complete population Sweden. Methods We examine more than 3,000,000 1960 2007 administrative register with comprehensive information on various dimensions status. use six different operationalizations status, including earnings, post‐transfer income (including government...

10.1002/ajhb.22756 article EN American Journal of Human Biology 2015-06-19

Abstract We examine the relationship between birth-to-birth intervals and a variety of mid- long-term cognitive socioeconomic outcomes, including high school GPA, ability, educational attainment, earnings, unemployment status, receiving government welfare support. Using contemporary Swedish population register data within-family sibling comparison design, we find that neither birth interval preceding index person nor following are associated with any substantively meaningful changes in or...

10.1007/s13524-017-0550-x article EN cc-by Demography 2017-02-13

Demographic research has paid much attention to the impact of childhood conditions on adult mortality. We focus one key aspects early life conditions, sibling group size, and examine causal effect growing up in a large family While previous studies have focused low- or middle-income countries, we whether is disadvantage Sweden, context where most parents adequate resources, which are complemented by generous welfare state. used Swedish register data frailty models, examining all-cause...

10.1080/00324728.2016.1260755 article EN cc-by Population Studies 2017-01-02
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