Association Between Time Spent Outdoors and Risk of Multiple Sclerosis.
Journal
Neurology
ISSN: 1526-632X
Titre abrégé: Neurology
Pays: United States
ID NLM: 0401060
Informations de publication
Date de publication:
18 01 2022
18 01 2022
Historique:
received:
23
03
2021
accepted:
19
10
2021
pubmed:
10
12
2021
medline:
6
4
2022
entrez:
9
12
2021
Statut:
ppublish
Résumé
This study aims to determine the contributions of sun exposure and ultraviolet radiation (UVR) exposure to risk of pediatric-onset multiple sclerosis (MS). Children with MS and controls recruited from multiple centers in the United States were matched on sex and age. Multivariable conditional logistic regression was used to investigate the association of time spent outdoors daily in summer, use of sun protection, and ambient summer UVR dose in the year before birth and the year before diagnosis with MS risk, with adjustment for sex, age, race, birth season, child's skin color, mother's education, tobacco smoke exposure, being overweight, and Epstein-Barr virus infection. Three hundred thirty-two children with MS (median disease duration 7.3 months) and 534 controls were included after matching on sex and age. In a fully adjusted model, compared to spending <30 minutes outdoors daily during the most recent summer, greater time spent outdoors was associated with a marked reduction in the odds of developing MS, with evidence of dose-response (30 minutes-1 hour: adjusted odds ratio [AOR] 0.48, 95% confidence interval [CI] 0.23-0.99, If this is a causal association, spending more time in the sun during summer may be strongly protective against developing pediatric MS, as well as residing in a sunnier location.
Sections du résumé
BACKGROUND AND OBJECTIVES
This study aims to determine the contributions of sun exposure and ultraviolet radiation (UVR) exposure to risk of pediatric-onset multiple sclerosis (MS).
METHODS
Children with MS and controls recruited from multiple centers in the United States were matched on sex and age. Multivariable conditional logistic regression was used to investigate the association of time spent outdoors daily in summer, use of sun protection, and ambient summer UVR dose in the year before birth and the year before diagnosis with MS risk, with adjustment for sex, age, race, birth season, child's skin color, mother's education, tobacco smoke exposure, being overweight, and Epstein-Barr virus infection.
RESULTS
Three hundred thirty-two children with MS (median disease duration 7.3 months) and 534 controls were included after matching on sex and age. In a fully adjusted model, compared to spending <30 minutes outdoors daily during the most recent summer, greater time spent outdoors was associated with a marked reduction in the odds of developing MS, with evidence of dose-response (30 minutes-1 hour: adjusted odds ratio [AOR] 0.48, 95% confidence interval [CI] 0.23-0.99,
DISCUSSION
If this is a causal association, spending more time in the sun during summer may be strongly protective against developing pediatric MS, as well as residing in a sunnier location.
Identifiants
pubmed: 34880094
pii: WNL.0000000000013045
doi: 10.1212/WNL.0000000000013045
pmc: PMC8792813
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e267-e278Investigateurs
Jayne Ness
(J)
Jan-Mendelt Tillema
(JM)
Anita Belman
(A)
Timothy Lotze
(T)
Nikita Shukla
(N)
Mary Rensel
(M)
John Rose
(J)
Brad Barney
(B)
Melissa Bolton
(M)
Brittany Brown
(B)
Mike Waltz
(M)
Rachel Codden
(R)
Regan Jackson
(R)
Liz Rodriguez
(L)
Justin Wheeler
(J)
Skyler Peterson
(S)
Informations de copyright
© 2021 American Academy of Neurology.
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