Evidence map›Paper›PMID 30635439›Full record

ArticleJournal of epidemiology and community health2019

Long-term effects of compulsory schooling on physical, mental and cognitive ageing: a natural experiment.

Emilie Courtin, Vahe Nafilyan, Maria Glymour, Marcel Goldberg, Claudine Berr, Lisa F Berkman, Marie Zins, Mauricio Avendano

Abstract read
In one paragraph

Article in Journal of epidemiology and community health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Cognitive impairments associated with chemotherapy in women with breast cancer: a meta-analysis and meta-regression.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2023
    Pooled it
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  5. Harmonizing measures of cross-country policies for aging research: applications to education, pension, and long-term care systems.The journals of gerontology. Series B, Psychological sciences and social sciences · 2026
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  12. Modifiable dementia risk factors associated with objective and subjective cognition.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
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  16. Mental health effects of education.Health economics · 2022
    Article
  17. Response to "Upping the dose of dementia risk reduction".Alzheimer's & dementia : the journal of the Alzheimer's Association · 2022
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  18. Article
  19. Education and Cognitive Functioning Across the Life Span.Psychological science in the public interest : a journal of the American Psychological Society · 2020
    Review
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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

8 authors.

Emilie CourtinHarvard Center for Population and Development Studies, Harvard University, Cambridge, Massachusetts, USA.ORCID 0000-0001-5073-7279
Vahe NafilyanKing's Business School, King's College London, London, UK.
Maria GlymourDepartment of Epidemiology and Biostatistics, University of California at San Francisco, San Francisco, California, USA.
Marcel GoldbergMedical School, Paris Descartes University, Paris, France.
Claudine BerrNeuropsychiatry: Epidemiological and Clinical Research, U1061, INSERM, Montpellier, France.
Lisa F BerkmanHarvard Center for Population and Development Studies, Harvard University, Cambridge, Massachusetts, USA.
Marie ZinsMedical School, Paris Descartes University, Paris, France.
Mauricio AvendanoDepartment of Global Health and Social Medicine, King's College London, London, UK.ORCID 0000-0002-7295-2911

Funding

Social protection, work and family strain: disadvantage effects in US and EuropeR01AG040248 · NIA · HARVARD SCHOOL OF PUBLIC HEALTH · PI BERKMAN, LISA F · 2011 to 2015
$1.5M
NIA NIH HHS R01 AG040248
6 · The paper itself

Abstract

backgroundLonger schooling is associated with better physical, mental and cognitive functioning, but there is controversy as to whether these associations are causal. We examine the long-term health impact of a policy that increased compulsory schooling by 2 years in France for cohorts born on or after January 1953, offering a natural experiment.

methodsData came from Constances, a randomly selected cohort of the French population assessed for cognition, depressive symptoms and physical functioning at ages 45 and older (n=18 929). We use a Regression Discontinuity Design to estimate the impact of increased schooling duration on health. Cognition was measured based on five validated neuropsychological tests and combined into an overall score. The Center for Epidemiological Studies Depression scale was used to assess depressive symptoms levels. Physical functioning was included as finger tapping, hand grip strength and walking speed.

resultsThe reform increased average schooling, particularly among participants from disadvantaged families. Estimates suggest that for men, this reform improved cognitive scores (β=0.15, 95% CI 0.02 to 0.27), but had no impact on physical functioning. Among women, the reform did not increase cognitive scores or physical functioning but led to higher levels of depressive symptoms (β=1.52, 95% CI 0.32 to 2.72). Results were robust to a range of sensitivity analyses.

conclusionThese findings highlight the need to carefully consider the potential limits of policies that increase the length of compulsory schooling as strategies to improve population health.

Indexed as

Cognitive AgingEducational StatusWalkingAgedCognitionCohort StudiesDepressionFemaleFranceHand StrengthHumansMaleMiddle AgedNeuropsychological TestsPublic PolicySchoolsdepressioneducationhealth inequalitiespolicysocial epidemiology

Identifiers

PMID30635439
PMCPMC6581102

What OpenQuestion holds

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LicenceCC BY-NC
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.