Cited by 108Stress Responses and CortisolMigration, Health and TraumaPosttraumatic Stress Disorder Research

Hair cortisol concentrations in war-affected adolescents: A prospective intervention trial

Open access
Dajani, Rana, Hadfield, Kristin, van Uum, Stan, Greff, Michael, Panter-Brick, Catherine·2018·Psychoneuroendocrinology

Abstract

Temporal examinations of the biological signature of stress or trauma in war-affected populations are seldom undertaken. Moreover, few studies have examined whether stress biomarkers track biological sensitivity to brief interventions targeting the improvement of psychosocial wellbeing. Our study is the first to prospectively examine, in war-affected adolescents, the associations between hair cortisol concentrations (HCC) and self-reports of stress, insecurity, posttraumatic reactions, and lifetime trauma. We conducted a randomized controlled trial to test the impact of an 8-week intervention based on profound stress attunement. We collected data for a gender-balanced sample of 733 Syrian refugee (n = 411) and Jordanian non-refugee (n = 322) adolescents (12-18 years), at three time-points. We used growth mixture models to classify cortisol trajectories, and growth models to evaluate intervention impact on stress physiology. We observed three trajectories of HCC: hypersecretion, medium secretion, and hyposecretion (9.6%, 87.5% and 2.9% of the cohort, respectively). For every one percent increase in levels of insecurity, adolescents were 0.02 times more likely to have a trajectory of hypersecretion (95% CI: 1.00, 1.03, p = 0.01). For each additional symptom of posttraumatic stress reported, they were 0.07 times less likely to show hyposecretion (95% CI: 0.89, 0.98, p = 0.01). Indeed, stronger posttraumatic stress reactions were associated with a pattern of within-individual cortisol dysregulation and medium secretion. Overall, HCC decreased by a third in response to the intervention (95% CI: -0.19, -0.03, p = 0.01). While the intervention decreased HCC for youth with hypersecretion and medium secretion, it increased HCC for youth with hyposecretion (95% CI: 0.22, 1.16, p = 0.004), relative to controls. This suggests a beneficial regularization of cortisol levels, corroborating self-reports of improved psychosocial wellbeing. We did not find evidence to suggest that gender, resilience, or posttraumatic stress disorder influenced the strength or direction of responses to the intervention. This robust impact evaluation exemplifies the utility of biomarkers for tracking physiological changes in response to interventions over time. It enhances the understanding of trajectories of endocrine response in adverse environments and patterns of stress responsivity to ecological improvement.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.psyneuen.2017.12.012

Cites

59 of 59 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. Phillips, R., Kenny, S., McGrath, B. (Eds.), The Routledge Handbook of Community Development, Human Rights and Resilience, London, United Kingdom.
  2. Sancilio, A., Dajani, R., Eggerman, M., van Uum, S., Wiley, K., Panter-Brick, C., 2016. Can stress biomarkers demonstrate the effectiveness of a humanitarian intervention? An evaluation with Syrian refugee youth. In: 41st Annual Meeting of the Human Biology Association. Atlanta, Georgia.

Cited by

Sorted by citations

Authors
Dajani, R., Hadfield, K., van Uum, S., Greff, M., & Panter-Brick, C.
Affiliations
  • Harvard University (US)
  • Queen Mary University of London (GB)
  • Western University (CA)
Venue
Psychoneuroendocrinology
Publisher
Elsevier BV
Published
2018-03
Volume
89
Pages
138-146
ISSN
0306-4530 (ISSN-L)
OpenAlex
W2780117356
Cited by
108
References
59
Citations by year
2026: 7 · 2025: 12 · 2024: 16 · 2023: 9 · 2022: 20 · 2021: 10 · 2020: 17 · 2019: 14 · 2018: 3
FWCI
5.06
Type
journal article
Language
en
Open access
Locations
  • Psychoneuroendocrinology (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Queen Mary Research Online (Queen Mary University of London) (submittedVersion)
Funders
  • Elrha’s Research for Health in Humanitarian Crises
  • Wellcome Trust
  • UK Government
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Social Sciences › Psychology › Clinical Psychology › Migration, Health and Trauma
  • Social Sciences › Psychology › Clinical Psychology › Posttraumatic Stress Disorder Research
Keywords
hair cortisol, Syrian refugees, trauma exposure, post-traumatic stress, hypersecretion, hyposecretion, stress biomarkers, psychosocial well-being, resilience, gender differences, cortisol dysregulation, intervention impact evaluation, Jordanian adolescents, post-traumatic stress disorder
MeSH terms
Armed Conflicts, Adolescent, Female, Hair, Humans, Hydrocortisone, Male, Prospective Studies, Refugees, Sex Factors, Stress, Physiological, Stress Disorders, Post-Traumatic, Stress, Psychological, Biomarkers

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review