Evidence map›Paper›PMID 37564905›Full record

ReviewEnvironmental epigenetics2023

Epigenetic clocks and research implications of the lack of data on whom they have been developed: a review of reported and missing sociodemographic characteristics.

Sarah Holmes Watkins, Christian Testa, Jarvis T Chen, Immaculata De Vivo, Andrew J Simpkin, Kate Tilling, Ana V Diez Roux, George Davey Smith, Pamela D Waterman, Matthew Suderman and 2 more

Abstract readReview
In one paragraph

Review in Environmental epigenetics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

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

  1. Pooled it
  2. Pooled it
  3. Exploring Epigenetic Aging and Cognitive Change in Middle Adulthood.The journals of gerontology. Series A, Biological sciences and medical sciences · 2026
    Article
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  8. Review
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  18. Quantification of Epigenetic Aging in Public Health.Annual review of public health · 2025
    Review
  19. Review
  20. DNA methylation and prediction of biological age.Frontiers in molecular biosciences · 2025
    Review
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

12 authors.

Sarah Holmes WatkinsPopulation Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK.ORCID https://orcid.org/0000-0002-8034-8095
Christian TestaDepartment of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA.ORCID https://orcid.org/0000-0001-9103-5839
Jarvis T ChenDepartment of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA.
Immaculata De VivoProgram in Genetic Epidemiology and Statistical Genetics, Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.
Andrew J SimpkinSchool of Medicine, National University of Ireland Galway, Galway H91 TK33, Ireland.
Kate TillingPopulation Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK.
Ana V Diez RouxDepartment of Epidemiology and Biostatistics and Urban Health Collaborative, Dornsife School of Public Health, Drexel University, Philadelphia, PA 19104, USA.
George Davey SmithPopulation Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK.ORCID https://orcid.org/0000-0002-1407-8314
Pamela D WatermanDepartment of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA.
Matthew SudermanPopulation Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK.
Caroline ReltonPopulation Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK.
Nancy KriegerDepartment of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA 02115, USA.ORCID https://orcid.org/0000-0002-4815-5947

Funding

DNA methylation & adversity: pathways from exposures to health inequitiesR01MD014304 · NIMHD · HARVARD SCHOOL OF PUBLIC HEALTH · PI KRIEGER, NANCY, RELTON, CAROLINE LAURA · 2019 to 2022
$2.3M
Medical Research Council MC_UU_00011/1Medical Research Council MC_UU_00011/3Medical Research Council MC_UU_00011/5Medical Research Council MC_UU_00032/1Medical Research Council MC_UU_00032/4NIMHD NIH HHS R01 MD014304
6 · The paper itself

Abstract

Epigenetic clocks are increasingly being used as a tool to assess the impact of a wide variety of phenotypes and exposures on healthy ageing, with a recent focus on social determinants of health. However, little attention has been paid to the sociodemographic characteristics of participants on whom these clocks have been based. Participant characteristics are important because sociodemographic and socioeconomic factors are known to be associated with both DNA methylation variation and healthy ageing. It is also well known that machine learning algorithms have the potential to exacerbate health inequities through the use of unrepresentative samples - prediction models may underperform in social groups that were poorly represented in the training data used to construct the model. To address this gap in the literature, we conducted a review of the sociodemographic characteristics of the participants whose data were used to construct 13 commonly used epigenetic clocks. We found that although some of the epigenetic clocks were created utilizing data provided by individuals from different ages, sexes/genders, and racialized groups, sociodemographic characteristics are generally poorly reported. Reported information is limited by inadequate conceptualization of the social dimensions and exposure implications of gender and racialized inequality, and socioeconomic data are infrequently reported. It is important for future work to ensure clear reporting of tangible data on the sociodemographic and socioeconomic characteristics of all the participants in the study to ensure that other researchers can make informed judgements about the appropriateness of the model for their study population.

Indexed as

DNA methylationepigenetic agehealth equitysocioeconomic

Identifiers

PMID37564905
PMCPMC10411856

What Socratic holds

Textmetadata
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 Socratic graph.