A national case-control study investigating demographic and environmental factors associated with NMOSD.
Mult Scler
; 29(4-5): 521-529, 2023 04.
Article
en En
| MEDLINE
| ID: mdl-36803237
ABSTRACT
BACKGROUND:
Risk factors for aquaporin-4 (AQP4+) antibody neuromyelitis optica spectrum disorder (NMOSD) are not well-established.OBJECTIVE:
To investigate demographic and environmental factors associated with NMOSD using a validated questionnaire and case-control design.METHODS:
We enrolled patients with AQP4 + NMOSD through six Canadian Multiple Sclerosis Clinics. Participants completed the validated Environmental Risk Factors in Multiple Sclerosis Study (EnvIMS) questionnaire. Their responses were compared to those of 956 unaffected controls from the Canadian arm of EnvIMS. We calculated odds ratios (ORs) for the association between each variable and NMOSD using logistic regression and Firth's procedure for rare events.RESULTS:
In 122 participants (87.7% female) with NMOSD, odds of NMOSD in East Asian and Black participants were ⩾8 times that observed in White participants. Birthplace outside Canada was associated with an increased risk of NMOSD (OR = 5.5, 95% confidence interval (CI) = 3.6-8.3) as were concomitant autoimmune diseases (OR = 2.7, 95% CI = 1.4-5.0). No association was observed with reproductive history or age at menarche.CONCLUSION:
In this case-control study, risk of NMOSD in East Asian and Black versus White individuals was greater than that observed in many previous studies. Despite the preponderance of affected women, we did not observe any association with hormonal factors such as reproductive history or age at menarche.Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Neuromielitis Óptica
/
Esclerosis Múltiple
Tipo de estudio:
Observational_studies
/
Risk_factors_studies
País/Región como asunto:
America do norte
Idioma:
En
Revista:
Mult Scler
Asunto de la revista:
NEUROLOGIA
Año:
2023
Tipo del documento:
Article