Evidence map›Paper›PMID 34588168›Full record

ArticleBMJ (Clinical research ed.)2021

Use of menopausal hormone therapy and risk of dementia: nested case-control studies using QResearch and CPRD databases.

Yana Vinogradova, Tom Dening, Julia Hippisley-Cox, Lauren Taylor, Michael Moore, Carol Coupland

Open access · hybridAbstract read
In one paragraph

Article in BMJ (Clinical research ed.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
9.0field-weighted citation impact, top 1% 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

32 citing papers in PubMed, 1 synthesis or guideline pooled it, 82 citations in OpenAlex.

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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

6 authors at 3 institutions in 1 country.

Yana VinogradovaDivision of Primary Care, School of Medicine, University of Nottingham, Nottingham, NG2 7RD, UK Yana.Vinogradova@nottingham.ac.uk.ORCID 0000-0002-3030-5257
Tom DeningMental Health and Clinical Neurosciences, School of Medicine, University of Nottingham, Nottingham, UK.
Julia Hippisley-CoxNuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, OX2 6GG, UK.
Lauren TaylorDivision of Primary Care, School of Medicine, University of Nottingham, Nottingham, NG2 7RD, UK.
Michael MoorePrimary Care Research Centre, Primary Care, Population Sciences and Medical Education (PPM), Faculty of Medicine, University of Southampton, Southampton, UK.
Carol CouplandDivision of Primary Care, School of Medicine, University of Nottingham, Nottingham, NG2 7RD, UK.
University of Nottingham · GBUniversity of Oxford · GBUniversity of Southampton · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo assess the risks of developing dementia associated with different types and durations of menopausal hormone therapy.

designTwo nested case-control studies.

settingUK general practices contributing to QResearch or the Clinical Practice Research Datalink (CPRD), using all links to hospital, mortality, and social deprivation data.

participants118 501 women aged 55 and older with a primary diagnosis of dementia between 1998 and 2020, matched by age, general practice, and index date to 497 416 female controls.

main outcome measuresDementia diagnoses from general practice, mortality, and hospital records; odds ratios for menopausal hormone treatments adjusted for demographics, smoking status, alcohol consumption, comorbidities, family history, and other prescribed drugs.

resultsOverall, 16 291 (14%) women with a diagnosis of dementia and 68 726 (14%) controls had used menopausal hormone therapy more than three years before the index date. Overall, no increased risks of developing dementia associated with menopausal hormone therapy were observed. A decreased global risk of dementia was found among cases and controls younger than 80 years who had been taking oestrogen-only therapy for 10 years or more (adjusted odds ratio 0.85, 95% confidence interval 0.76 to 0.94). Increased risks of developing specifically Alzheimer's disease were found among women who had used oestrogen-progestogen therapy for between five and nine years (1.11, 1.04 to 1.20) and for 10 years or more (1.19, 1.06 to 1.33). This was equivalent to, respectively, five and seven extra cases per 10 000 woman years. Detailed risk associations for the specific progestogens studied are also provided.

conclusionThis study gives estimates for risks of developing dementia and Alzheimer's disease in women exposed to different types of menopausal hormone therapy for different durations and has shown no increased risks of developing dementia overall. It has shown a slightly increased risk of developing Alzheimer's disease among long term users of oestrogen-progestogen therapies.

Indexed as

AgedAged, 80 and overAlzheimer DiseaseCase-Control StudiesDatabases, FactualDementiaEstrogen Replacement TherapyEstrogensFemaleHumansMiddle AgedOdds RatioPostmenopauseProgestinsRisk FactorsUnited KingdomEstrogensProgestins

Identifiers

PMID34588168
PMCPMC8479814
OpenAlexW3196395067

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.