Evidence map›Paper›PMID 33427734›Full record

ArticleJournal of Alzheimer's disease : JAD2021

Life Course Air Pollution Exposure and Cognitive Decline: Modelled Historical Air Pollution Data and the Lothian Birth Cohort 1936.

Tom C Russ, Mark P C Cherrie, Chris Dibben, Sam Tomlinson, Stefan Reis, Ulrike Dragosits, Massimo Vieno, Rachel Beck, Ed Carnell, Niamh K Shortt and 9 more

Abstract readHistorical Article
In one paragraph

Article in Journal of Alzheimer's disease : JAD, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–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

18 citing papers in PubMed.

  1. Article
  2. Review
  3. Development of Life Course Exposure Estimates Using Geospatial Data and Residence History.International journal of environmental research and public health · 2025
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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

19 authors.

Tom C RussAlzheimer Scotland Dementia Research Centre, University of Edinburgh, Edinburgh, UK.
Mark P C CherrieSchool of GeoSciences, University of Edinburgh, Edinburgh, UK.
Chris DibbenSchool of GeoSciences, University of Edinburgh, Edinburgh, UK.
Sam TomlinsonUK Centre for Ecology & Hydrology (UKCEH), Bush Estate, Penicuik, UK.
Stefan ReisUK Centre for Ecology & Hydrology (UKCEH), Bush Estate, Penicuik, UK.
Ulrike DragositsUK Centre for Ecology & Hydrology (UKCEH), Bush Estate, Penicuik, UK.
Massimo VienoUK Centre for Ecology & Hydrology (UKCEH), Bush Estate, Penicuik, UK.
Rachel BeckUK Centre for Ecology & Hydrology (UKCEH), Bush Estate, Penicuik, UK.
Ed CarnellUK Centre for Ecology & Hydrology (UKCEH), Bush Estate, Penicuik, UK.
Niamh K ShorttCentre for Research on Environment, Society and Health, School of GeoSciences, University of Edinburgh, Edinburgh, UK.
Graciela Muniz-TerreraAlzheimer Scotland Dementia Research Centre, University of Edinburgh, Edinburgh, UK.
Paul RedmondLothian Birth Cohorts, Department of Psychology, University of Edinburgh, Edinburgh, UK.
Adele M TaylorLothian Birth Cohorts, Department of Psychology, University of Edinburgh, Edinburgh, UK.
Tom ClemensSchool of GeoSciences, University of Edinburgh, Edinburgh, UK.
Martie van TongerenCentre for Research on Environment, Society and Health, School of GeoSciences, University of Edinburgh, Edinburgh, UK.
Raymond M AgiusCentre for Research on Environment, Society and Health, School of GeoSciences, University of Edinburgh, Edinburgh, UK.
John M StarrAlzheimer Scotland Dementia Research Centre, University of Edinburgh, Edinburgh, UK.
Ian J DearyLothian Birth Cohorts, Department of Psychology, University of Edinburgh, Edinburgh, UK.
Jamie R PearceCentre for Research on Environment, Society and Health, School of GeoSciences, University of Edinburgh, Edinburgh, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAir pollution has been consistently linked with dementia and cognitive decline. However, it is unclear whether risk is accumulated through long-term exposure or whether there are sensitive/critical periods. A key barrier to clarifying this relationship is the dearth of historical air pollution data.

objectiveTo demonstrate the feasibility of modelling historical air pollution data and using them in epidemiologicalmodels.

methodsUsing the EMEP4UK atmospheric chemistry transport model, we modelled historical fine particulate matter (PM2.5) concentrations for the years 1935, 1950, 1970, 1980, and 1990 and combined these with contemporary modelled data from 2001 to estimate life course exposure in 572 participants in the Lothian Birth Cohort 1936 with lifetime residential history recorded. Linear regression and latent growth models were constructed using cognitive ability (IQ) measured by the Moray House Test at the ages of 11, 70, 76, and 79 years to explore the effects of historical air pollution exposure. Covariates included sex, IQ at age 11 years, social class, and smoking.

resultsHigher air pollution modelled for 1935 (when participants would have been in utero) was associated with worse change in IQ from age 11-70 years (β = -0.006, SE = 0.002, p = 0.03) but not cognitive trajectories from age 70-79 years (p > 0.05). There was no support for other critical/sensitive periods of exposure or an accumulation of risk (all p > 0.05).

conclusionThe life course paradigm is essential in understanding cognitive decline and this is the first study to examine life course air pollution exposure in relation to cognitive health.

Indexed as

AdolescentAdultAgedAir PollutionChildCognitive DysfunctionEnvironmental ExposureFemaleHistory, 20th CenturyHumansLinear ModelsMaleMiddle AgedParticulate MatterScotlandYoung AdultParticulate MatterAgingair pollutionAlzheimer’s diseaseatmospherecognitiondementiaepidemiologic methods

Identifiers

PMID33427734
PMCPMC7990442

What OpenQuestion holds

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LicenceCC BY-NC
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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.