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The associations between advanced maternal age and perinatal complications, as well as newborn parameters, were analyzed using a dataset of 6831 singleton births among first\u2010time mothers taking place in Vienna, Austria, between 2010 and 2019.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>In this single\u2010center medical records\u2010based retrospective study, the following obstetrical parameters have been included: conception mode, preterm birth (&lt;\u200937th gestational week), labor induction, planned or emergency cesarean sections, adverse child presentation, newborn size, and Apgar scores. The outcomes of first\u2010time mothers older than 35 and 40\u2009years, respectively, were compared to a reference group of first\u2010time mothers aged between 20 and 34\u2009years.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>First\u2010time mothers aged 35 and older show a significantly (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.009 resp. <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001) higher risk of preterm births, with a 1.32\u2010fold risk for women between 35 and 39\u2009years and a 2.35\u2010fold risk for women aged 40 and older. Maternal age is also significantly (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001) associated with an increased rate of medically induced labor, cesarean sections, and low\u2010weight newborns (&lt;\u20092500\u2009g). In contrast, there was no significant difference in Apgar scores among the newborns of different maternal age groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Advanced maternal age at first birth is a relevant risk factor for certain obstetric and neonatal complications. Delaying motherhood is a risky trend.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ajhb.70037","type":"journal-article","created":{"date-parts":[[2025,4,9]],"date-time":"2025-04-09T07:49:23Z","timestamp":1744184963000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Delaying Motherhood\u2014An Increasingly Common but Risky Trend in High\u2010Income Countries"],"prefix":"10.1002","volume":"37","author":[{"given":"Magdalena","family":"Kraus","sequence":"first","affiliation":[{"name":"Department of Evolutionary Anthropology University of Vienna  Vienna Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Beda","family":"Hartmann","sequence":"additional","affiliation":[{"name":"Clinic Donaustadt, Vienna Clinic for Gynecology and Obstetrics  Vienna 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