• Vienna Institute of Demography (Ed.) - Éva Beaujouan - Marie-Caroline Compans - Alice Goisis - Jasmin Passet-Wittig (Guest Eds.)

Vienna Yearbook of Population Research 2026

Special issue: Delayed reproduction

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The Vienna Yearbook of Population Research is an open access journal that features contributions addressing population trends as well as a broad range of theoretical and methodological issues in population research. Besides Research articles and Review articles, the journal includes Data and Trends contributions, which analyse changes in population dynamics or present databases and data infrastructure. It also features Perspectives articles, which focus on ideas, concepts or theories, as well as invited Debates reflecting on selected questions and issues. Since 2008, the volumes have been devoted to selected themes following special calls for thematic issues.

The 2026 volume of the Vienna Yearbook of Population Research brings together a diverse set of contributions examining delayed reproduction as a defining feature of contemporary demographic change. The papers explore how later transitions to parenthood reshape reproductive trajectories, fertility intentions and birth outcomes for individuals and societies. Particular emphasis is placed on heterogeneities and inequalities by educational background, migration status, and place of residence. Using both quantitative and qualitative approaches and drawing on data from Europe, the Americas, and Asia, the issue highlights that delayed reproduction is a lasting trend with significant consequences for future fertility and societies more broadly.

Verlag der Österreichischen Akademie der Wissenschaften
Austrian Academy of Sciences Press
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Vienna Yearbook of Population Research 2026
ISSN 1728-4414
Print Edition
ISSN 1728-5305
Online Edition
ISBN 978-3-7001-5156-2
Print Edition
ISBN 978-3-7001-5157-9
Online Edition



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Verlag der Österreichischen Akademie der Wissenschaften
Austrian Academy of Sciences Press
A-1011 Wien, Dr. Ignaz Seipel-Platz 2,
Tel. +43-1-515 81/DW 3420, Fax +43-1-515 81/DW 3400
https://verlag.oeaw.ac.at, e-mail: bestellung.verlag@oeaw.ac.at
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Educational differences in the impact of maternal age on perinatal health in Spain: A population-based study

    Marta Seiz

Vienna Yearbook of Population Research 2026, pp. , 2026/04/01

Special issue: Delayed reproduction

doi: 10.1553/p-67f8-9f5p


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doi:10.1553/p-67f8-9f5p


Abstract

Advanced maternal age has been linked to unfavourable birth outcomes, yet uncertainties regarding the generalisability of these associations remain. Socioeconomic resources protect perinatal health, which raises the question of potential mitigation of
age effects. Using register data from the Spanish Birth Statistics (2007–2021), this study explores how a wide range of adverse perinatal outcomes relate to mothers’ age and education and their interaction. Statistically significant (p < 0.05) incremental effects of maternal age on most outcomes are observed. Maternal university-level education and, to a lesser extent, medium-level education play a protective role translating into a lower baseline probability of most events already at ages 25 to 29, and, generally, into lower figures across the age distribution. Nevertheless, effects are frequently small and sometimes restricted to specific combinations of education and age, which suggests that the perinatal health impact of
maternal ageing should not be underplayed even among more advantaged population strata.

Keywords: Perinatal health; Late childbearing; Maternal education; Maternal age