Evidence map›Paper›PMID 34255432›Full record

ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2021

Sex differences in dementia and response to a lifestyle intervention: Evidence from Nordic population-based studies and a prevention trial.

Shireen Sindi, Ingemar Kåreholt, Tiia Ngandu, Anna Rosenberg, Jenni Kulmala, Lena Johansson, Hanna Wetterberg, Johan Skoog, Linnea Sjöberg, Hui-Xin Wang and 3 more

Open access · greenAbstract read
In one paragraph

Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
6.4field-weighted citation impact, top 2% 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

38 citing papers in PubMed, 1 synthesis or guideline pooled it, 64 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Living Arrangements and Cognitive Impairment Among Mexican American Older Adults: Nativity Differences.Journal of applied gerontology : the official journal of the Southern Gerontological Society · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Modifiable Risk Factors for Cognitive Decline in Community-Dwelling Older Adults Differ by Sex and APOE4.The journals of gerontology. Series B, Psychological sciences and social sciences · 2025
    Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Sex and gender differences in cognitive resilience to aging and Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Review
  19. Article
  20. 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

13 authors at 6 institutions in 3 countries.

Shireen SindiDivision of Clinical Geriatrics, Center for Alzheimer Research, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Ingemar KåreholtAging Research Center, Karolinska Institutet and Stockholm University, Stockholm, Sweden.
Tiia NganduPublic Health Promotion Unit, National Institute for Health and Welfare, Helsinki, Finland.
Anna RosenbergInstitute of Public Health and Clinical Nutrition and Institute of Clinical Medicine, Neurology, University of Eastern Finland, Kuopio, Finland.
Jenni KulmalaDivision of Clinical Geriatrics, Center for Alzheimer Research, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Lena JohanssonInstitute of Neuroscience and Physiology, Center for Health and Ageing AGECAP, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Hanna WetterbergInstitute of Neuroscience and Physiology, Center for Health and Ageing AGECAP, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Johan SkoogDepartment of Psychology, Center for Health and Ageing (AGECAP), University of Gothenburg, Gothenburg, Sweden.
Linnea SjöbergAging Research Center, Karolinska Institutet and Stockholm University, Stockholm, Sweden.
Hui-Xin WangAging Research Center, Karolinska Institutet and Stockholm University, Stockholm, Sweden.
Laura FratiglioniAging Research Center, Karolinska Institutet and Stockholm University, Stockholm, Sweden.
Ingmar SkoogInstitute of Neuroscience and Physiology, Center for Health and Ageing AGECAP, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Miia KivipeltoDivision of Clinical Geriatrics, Center for Alzheimer Research, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
Karolinska Institutet · SEUniversity of Gothenburg · SEUniversity of Eastern Finland · FIFinnish Institute for Health and Welfare · FIJönköping University · SEStockholm Gerontology Research Center Foundation · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionEvidence on sex differences in the risk for dementia has been mixed. The goal was to assess sex differences in the development of dementia, and in the effects of a lifestyle intervention.

methodsTwo strategies were adopted, one using combined data from three large Nordic population-based cohort studies (n = 2289), adopting dementia as outcome, and 2-year multidomain lifestyle intervention (n = 1260), adopting cognitive change as outcome.

resultsThere was higher risk for dementia after age 80 years in women. The positive effects of the lifestyle intervention on cognition did not significantly differ between men and women. Sex-specific analyses suggested that different vascular, lifestyle, and psychosocial risk factors are important for women and men in mid- and late-life.

conclusionWomen had higher risk for dementia among the oldest individuals. Lifestyle interventions may be effectively implemented among older men and women.

Indexed as

Life StyleAgedAged, 80 and overAge FactorsDementiaFemaleHumansMaleRisk FactorsScandinavian and Nordic CountriesSex Factorscohort studydementialifestyle interventionrisk factorssex differences

Identifiers

PMID34255432
PMCPMC8361986
OpenAlexW3178826143

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.