Reproductive prognosis in endometriosis. A national cohort study

Maj V Hjordt Hansen, Tórur Dalsgaard, Torur Dalsgaard, Dorthe Hartwell, Charlotte Wessel Skovlund, Charlotte W Skovlund, Øjvind Lidegaard, Ojvind Lidegaard
Acta obstetricia et gynecologica Scandinavica · 2014 · vol. 93(5) , pp. 483–489 · doi:10.1111/aogs.12373 · PMID:24617701 · W1973998429
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⚙ AI-generated summary by claude@2026-06, 2026-06-08 ⓘ

Women with endometriosis have reduced childbirth rates and increased risks of miscarriage and ectopic pregnancy, though childbirth rates have improved over time due to assisted reproduction.

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Abstract

OBJECTIVE: To assess the reproductive long-term prognosis of women with and without endometriosis, to explore changes over time, and to quantify the contribution of artificial reproductive techniques. DESIGN: Cohort study. SETTING: Denmark 1977-2009. SAMPLE: Data retrieved from four national registries. Among 15-49-year-old women during the period 1977-82, 24 667 were diagnosed with endometriosis and 98 668 (1:4) women without endometriosis were age-matched. METHODS: To assess long-term reproductive prognosis, all pregnancy outcomes were identified among the women with and without endometriosis until the end of 2009. To explore changes over time, the endometriosis cohorts were followed for 15 years from the years 1980, 1986, 1992 and 1998, with the corresponding control cohorts. All pregnancy outcomes were categorized into naturally or artificially conceived pregnancies. MAIN OUTCOME MEASURES: Births, miscarriages, induced abortions, ectopic pregnancies and hydatidiform moles. RESULTS: Compared with women without endometriosis, women with endometriosis had a lowered relative risk for childbirth of 0.93 (95% confidence interval 0.92-0.95), for miscarriages the relative risk was 1.2 (95% confidence interval 1.2-1.3), ectopic pregnancies were almost twice as many (relative risk 1.9, 95% confidence interval 1.8-2.1), while frequencies of induced abortions were equivalent. The chances for childbirth increased over time from 0.82 to 0.92 (p < 0.001) with successive cohorts, but this was restricted to pregnancies from assisted reproduction. CONCLUSION: Women with endometriosis have slightly fewer children, but this lessened over time due to artificially conceived pregnancies. The risk for miscarriages and ectopic pregnancies was increased compared with women without the disease.

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Condition tags

mesh:D004715endometriosis

MeSH descriptors

Abortion, Induced Abortion, Spontaneous Endometriosis Hydatidiform Mole Live Birth Pregnancy, Ectopic Uterine Diseases Abortion, Induced Abortion, Spontaneous Adolescent Adult Case-Control Studies Denmark Endometriosis Female Humans Hydatidiform Mole Live Birth Middle Aged Pregnancy

Citation neighborhood

Papers in the corpus that this work cites (lower rings, blue) and that cite this one (upper rings, green). Dot size scales with the paper's in-corpus citation count — bigger dot = more influential within the endo/adeno field. Click a dot to open that paper. [ expand to 2 hops ] — adds papers reached through this work's immediate citers/citees. Heavier; up to 60 extra dots.

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Cited by (43)

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