ArticleBJOG : an international journal of obstetrics and gynaecology2025
Changes in the prevalence of maternal chronic conditions during pregnancy: A nationwide age-period-cohort analysis.
Article in BJOG : an international journal of obstetrics and gynaecology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
12 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Global prevalence of multimorbidity during pregnancy: a systematic review and meta-analysis.Reproductive health · 2026Pooled it
- Article
- Pregnancies in women with rare diseases: Selected maternal and perinatal outcomes.Acta obstetricia et gynecologica Scandinavica · 2026Article
- Preferences, factors, and needs involved in decision-making on medication use during lactation among parents and healthcare providers: a Canada-wide cross-sectional survey study.International breastfeeding journal · 2026Article
- Reproductive health outcomes of congenital heart disease survivors: A report from the congenital heart disease project to understand lifelong survivor experience (CHD PULSE study).American heart journal · 2026Article
- Article
- Remote home cardiotocography: A systematic review and meta-analysis.PLOS digital health · 2026Article
- Maternal psychiatric disorders before, during, and after pregnancy: a national cohort study in Sweden.Molecular psychiatry · 2026Article
- Multimorbidity before, during and after pregnancy among women in low-income and middle-income countries: protocol for a scoping review.BMJ open · 2025Article
- Care of pregnant women with pre-existing medical conditions in German perinatal centers.Archives of gynecology and obstetrics · 2025Article
- Observational
- Changes in the prevalence of maternal chronic conditions during pregnancy: A nationwide age-period-cohort analysis.BJOG : an international journal of obstetrics and gynaecology · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
objectiveTo estimate temporal changes in the prevalence of pre-existing chronic conditions among pregnant women in Sweden and evaluate the extent to which secular changes in maternal age, birth cohorts and obesity are associated with these trends.
designPopulation-based cross-sectional study.
settingSweden, 2002-2019. POPULATION: All women (aged 15-49 years) who delivered in Sweden (2002-2019).
methodsAn age-period-cohort analysis was used to evaluate the effects of age, calendar periods, and birth cohorts on the observed temporal trends.
main outcome measuresPre-existing chronic conditions, including 17 disease categories of physical and psychiatric health conditions recorded within 5 years before childbirth, presented as prevalence rates and rate ratios (RRs) with 95% confidence intervals (CIs). Temporal trends were also adjusted for pre-pregnancy body mass index (BMI) and the mother's country of birth.
resultsThe overall prevalence of at least one pre-existing chronic condition was 8.7% (147 458 of 1 703 731 women). The rates of pre-existing chronic conditions in pregnancy increased threefold between 2002-2006 and 2016-2019 (RR 2.82, 95% CI 2.77-2.87). Rates of psychiatric (RR 3.80, 95% CI 3.71-3.89), circulatory/metabolic (RR 1.62, 95% CI 1.55-1.71), autoimmune/neurological (RR 1.69, 95% CI 1.61-1.78) and other (RR 2.10, 95% CI 1.99-2.22) conditions increased substantially from 2002-2006 to 2016-2019. However, these increasing rates were less pronounced between 2012-2015 and 2016-2019. No birth cohort effect was evident for any of the pre-existing chronic conditions. Adjusting for secular changes in obesity and the mother's country of birth did not affect these associations.
conclusionsThe burden of pre-existing chronic conditions in pregnancy in Sweden increased from 2002 to 2019. This increase may be associated with the improved reporting of diagnoses and advancements in chronic condition treatment among women, potentially enhancing their fecundity.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.