Evidence map›Paper›PMID 36215221›Full record

ArticleThe journals of gerontology. Series B, Psychological sciences and social sciences2023

A Longitudinal Analysis of the Association Between Long-Term Exposure to Air Pollution and Cognitive Function Among Adults Aged 45 and Older in China.

Kai Hu, Jo Mhairi Hale, Hill Kulu, Yang Liu, Katherine Keenan

Abstract read
In one paragraph

Article in The journals of gerontology. Series B, Psychological sciences and social sciences, 2023. 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
–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

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

  1. Pooled it
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  4. Associations of PMThe Journal of international medical research · 2026
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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

5 authors.

Kai HuDepartment of Sociology, East China University of Science and Technology, Shanghai, 200237, China.ORCID 0000-0002-2900-2961
Jo Mhairi HalePopulation and Health Research Group, School of Geography and Sustainable Development, University of St Andrews, Fife, UK.ORCID 0000-0003-1343-3879
Hill KuluPopulation and Health Research Group, School of Geography and Sustainable Development, University of St Andrews, Fife, UK.
Yang LiuGangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA.
Katherine KeenanPopulation and Health Research Group, School of Geography and Sustainable Development, University of St Andrews, Fife, UK.

Funding

Cardiovascular health and exposure to PM2.5 constituents: a multi-cohort studyR01ES032140 · NIEHS · EMORY UNIVERSITY · PI LIANG, FENGCHAO, LIU, YANG · 2020 to 2023
$2.2M
NIEHS NIH HHS R01 ES032140NIH HHS 1R01ES032140
6 · The paper itself

Abstract

objectivesEvidence suggests long-term exposure to fine particulate matter air pollution (PM2.5) is associated with a higher risk of cognitive impairment, especially among older adults. This study examines the relationship between PM2.5 exposure and cognitive function in China's aging population.

methodsWe used longitudinal data from the China Health and Retirement Longitudinal Study (2011-2015) linked with historical PM2.5 concentrations (2000-2015) from remotely sensed satellite data. Growth curve models were applied to estimate associations between PM2.5 exposure (measured in intensity, duration, and a joint variable of intensity with duration for cumulative exposure) and cognitive function.

resultsRelative to the lowest exposure group, exposure in the second group of PM2.5 intensity (35-50 μg/m3) is associated with poorer cognitive function, but higher levels of PM2.5 appear to be associated with better cognitive function, indicating a U-shaped association. Similar patterns are seen for fully adjusted models of PM2.5 duration: the second group (13-60 months) is associated with worse cognitive function than the first group (0-12 months), but coefficients are nonsignificant in longer duration groups. Joint analysis of PM2.5 intensity with duration suggests that duration may play a more detrimental role in cognitive function than intensity. However, we do not find a statistically significant association between PM2.5 exposure and the rate of cognitive decline. DISCUSSION: Our findings are mixed and suggest that some categories of higher and longer exposure to PM2.5 are associated with poorer cognitive function, while that exposures do not hasten cognitive decline. However, more work is necessary to disentangle PM2.5 exposure from individuals' background characteristics, particularly those jointly associated with cognitive function and urban living.

Indexed as

Air PollutantsAir PollutionAgedChinaCognitionEnvironmental ExposureHumansLongitudinal StudiesParticulate MatterAir PollutantsParticulate MatterAir pollutionCognitive functionCumulative exposureHealth disparitiesPM2.5

Identifiers

PMID36215221
PMCPMC9985317

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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.