Evidence map›Paper›PMID 31065584›Full record

ArticleAlzheimer's & dementia (New York, N. Y.)2019

Pregnancy loss and risk of later dementia: A nationwide cohort study, Denmark, 1977-2017.

Saima Basit, Jan Wohlfahrt, Heather A Boyd

Open access · goldAbstract read
In one paragraph

Article in Alzheimer's & dementia (New York, N. Y.), 2019. 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.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 22% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. Women's midlife: the front line of Alzheimer prevention.The Journal of clinical investigation · 2026
    Review
  3. Observational
  4. Article
  5. Review
  6. Article
  7. Impact of adverse pregnancy outcomes on brain vascular health and cognition.Research and practice in thrombosis and haemostasis · 2024
    Article
  8. Pregnancy complications and later life women's health.Acta obstetricia et gynecologica Scandinavica · 2023
    Review
  9. Article
  10. Review
  11. Article
  12. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Saima BasitDepartment of Epidemiology Research, Statens Serum Institut, Copenhagen S, Denmark.
Jan WohlfahrtDepartment of Epidemiology Research, Statens Serum Institut, Copenhagen S, Denmark.
Heather A BoydDepartment of Epidemiology Research, Statens Serum Institut, Copenhagen S, Denmark.
Statens Serum Institut · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPregnancy losses may be associated with increased risks of dementia.

methodsWe conducted a register-based cohort study in 1,243,957 women with ≥1 pregnancy in Denmark in the period 1977-2015. Using Cox regression, we estimated hazard ratios (HRs) comparing risks of dementia in women with and without pregnancy losses.

resultsDuring 21,672,433 person-years of follow-up, 261,279 women experienced a pregnancy loss, and 2188 women were diagnosed with dementia. Stillbirth was associated with an 86% increased risk of dementia overall (HR 1.86, 95% confidence interval [CI] 1.28-2.71). By contrast, miscarriage was not associated with later risk of dementia overall (single miscarriage, HR 0.99, 95% CI 0.87-1.12; recurrent miscarriages, HR 1.06, 95% CI 0.84-1.35). Adjustment for cardiovascular disease, hypertension, and diabetes did not meaningfully alter the association magnitudes. DISCUSSION: Stillbirth and dementia may share underlying mechanisms, suggesting that a history of stillbirth should be considered when assessing dementia risk in women.

Indexed as

Alzheimer's diseaseDementiaMiscarriagePregnancy lossStillbirthVascular dementia

Identifiers

PMID31065584
PMCPMC6495073
OpenAlexW2943152143

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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Registered trials

None linked

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.