Evidence mapPaperPMID 38440929Full record

ArticleEuropean journal of neurology2024

Association between sun exposure habits and disease progression in multiple sclerosis.

Jing Wu, Tomas Olsson, Lars Alfredsson, Anna Karin Hedström

Open access · goldAbstract read
In one paragraph

Article in European journal of neurology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
3.8field-weighted citation impact, top 7% of its field
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

9 citing papers in PubMed, 10 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Review
  6. Lifestyle factors associated with benign multiple sclerosis.Journal of neurology, neurosurgery, and psychiatry · 2025
    Article
  7. Observational
  8. Review
  9. Article
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

4 authors at 2 institutions in 1 country.

Jing WuDepartment of Neurobiology, Care Sciences and Society, Aging Research Center, Karolinska Institutet and Stockholm University, Stockholm, Sweden.ORCID 0000-0002-6033-3734
Tomas OlssonDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
Lars AlfredssonDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
Anna Karin HedströmDepartment of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.ORCID 0000-0002-6612-4749
Karolinska Institutet · SEStockholm University · SE

Funding

Chinese Scholarship Council 201907930017Forskningsrådet om Hälsa, Arbetsliv och Välfärd 2015-00195Forskningsrådet om Hälsa, Arbetsliv och Välfärd 2019-00697Margaretha af Ugglas FoundationMedicinska ForskningsrådetNEURO SwedenSwedish Brain Foundation FO2020-0077Swedish Brain Foundation FO2022-0123Vetenskapsrådet 2016-02349Vetenskapsrådet 2017-00777Vetenskapsrådet 2020-01998
6 · The paper itself

Abstract

background and purposeHigher latitude has been associated with increased occurrence of multiple sclerosis (MS) and with more severe disease. The aim was to study the impact of sun exposure habits on MS disease progression and health-related quality of life.

methodsPatients from a population-based case-control study were categorized based on sun exposure habits at diagnosis and were followed up to 15 years post-diagnosis through the Swedish MS registry (n = 3314) with regard to changes in Expanded Disability Status Scale (EDSS). Linear mixed models were used to analyse long-term changes, while Cox regression models, with 95% confidence intervals, were used to investigate outcomes, including 24-week confirmed diasability worsening, EDSS3, EDSS4, and physical worsening as measured by the physical component of the Multiple Sclerosis Impact Scale 29.

resultsCompared to average sun exposure (median value), low exposure to sunlight was associated with faster EDSS progression, increased risk of confirmed disability worsening (hazard ratio [HR] 1.48, 95% CI 1.21-1.81), increased risk of reaching EDSS 3 (HR 1.35, 95% CI 1.02-1.79), EDSS 4 (HR 1.47, 95% CI 1.01-2.20) and self-reported physical worsening (HR 1.27, 95% CI 1.00-1.62). Significant trends revealed a lower risk of unfavourable outcomes with increasing sun exposure.

conclusionsVery low levels of sun exposure are associated with worse disease progression and health-related quality of life in patients with MS.

Indexed as

Disease ProgressionMultiple SclerosisQuality of LifeRegistriesSunlightAdultCase-Control StudiesDisability EvaluationFemaleHabitsHumansMaleMiddle AgedSwedendisability worseningdisease activityExpanded Disability Status Scalelife qualitymultiple sclerosissun exposure

Identifiers

PMID38440929
PMCPMC11235876
OpenAlexW4392470757

What Socratic holds

Textmetadata
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 Socratic graph.