ArticleInternational journal of epidemiology2023
Maternal age and the risk of low birthweight and pre-term delivery: a pan-Nordic comparison.
Article in International journal of epidemiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed, 36 citations in OpenAlex.
- Potential for primary prevention of low birth weight in pregnancies with and without gestational diabetes mellitus: a prospective cohort study in Central China.BMC pregnancy and childbirth · 2026Article
- Genetic and maternal environmental contributions to estimated fetal weight at 20 weeks gestation compared with birthweight.medRxiv : the preprint server for health sciences · 2026Article
- Maternal serum concentrations of persistent organic pollutants and childhood acute lymphoblastic leukemia in the Finnish Maternity Cohort.Environmental research · 2026Article
- Cerebrovascular Diagnoses During First Recorded Pregnancies in a 17-Year Period-A Nationwide Analysis of Healthcare Administrative Records Between 2004 and 2020 in a Central-Eastern European Population.Epidemiologia (Basel, Switzerland) · 2026Article
- Effect of completing eight or more antenatal care contacts on adverse pregnancy outcomes in a district hospital in Ghana: A propensity score-matched and doubly robust analysis.Global epidemiology · 2026Article
- Factors associated with preterm birth and low birth weight among syphilis-infected pregnant women.BMC infectious diseases · 2026Article
- Article
- Maternal Determinants of Retinopathy of Prematurity (ROP): Spotlight on Gestational Diabetes Mellitus.Cureus · 2026Article
- Risk factors for preterm birth in advanced maternal age pregnancies: a retrospective study.BMC pregnancy and childbirth · 2026Review
- Effects of US state paid family leave policies on perinatal and postpartum health: a quasi-experimental analysis.American journal of epidemiology · 2026Article
- Parental socioeconomic composition of birth cohorts changed during the COVID-19 pandemic.Nature communications · 2025Article
- Air Pollution Exposure and Birth Weight in the ECHO Cohort.JAMA network open · 2025Article
- Neonatal Outcomes Among Infants of Mothers With Advanced Maternal Age: A National Cohort Study.Acta paediatrica (Oslo, Norway : 1992) · 2025Article
- High-Risk Outcomes in In Vitro Fertilization Pregnancies for Women of a Very Advanced Maternal Age: Insights from a Multi-Hospital Study in Greece.Journal of clinical medicine · 2025Article
- Impact of maternal age on birth weight-related adverse outcomes in newborns: a retrospective study in south-central China.BMC pregnancy and childbirth · 2025Article
- Preterm delivery in Ghana: challenges and implications for maternal mental health trajectories.PloS one · 2025Article
- Evaluating causal influence of maternal educational attainment on offspring birthweight via observational study and Mendelian randomization analyses.SSM - population health · 2024Article
- Article
- Sustained decline in birth weight and increased rate of preterm infants born small for gestational age in Japan.Frontiers in pediatrics · 2024Article
Corrections and comments
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Authors and funding
7 authors at 5 institutions in 5 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAdvanced maternal age at birth is considered a risk factor for adverse birth outcomes. A recent study applying a sibling design has shown, however, that the association might be confounded by unobserved maternal characteristics.
methodsUsing total population register data on all live singleton births during the period 1999-2012 in Denmark (N = 580 133; 90% population coverage), Norway (N = 540 890) and Sweden (N = 941 403) and from 2001-2014 in Finland (N = 568 026), we test whether advanced maternal age at birth independently increases the risk of low birthweight (LBW) (<2500 g) and pre-term birth (<37 weeks gestation). We estimated within-family models to reduce confounding by unobserved maternal characteristics shared by siblings using three model specifications: Model 0 examines the bivariate association; Model 1 adjusts for parity and sex; Model 2 for parity, sex and birth year.
resultsThe main results (Model 1) show an increased risk in LBW and pre-term delivery with increasing maternal ages. For example, compared with maternal ages of 26-27 years, maternal ages of 38-39 years display a 2.2, 0.9, 2.1 and 2.4 percentage point increase in the risk of LBW in Denmark, Finland, Norway and Sweden, respectively. The same patterns hold for pre-term delivery.
conclusionsAdvanced maternal age is independently associated with higher risk of poor perinatal health outcomes even after adjusting for all observed and unobserved factors shared between siblings.
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