Publications by authors named "O Kjartansson"
Mortality of multiple sclerosis in Iceland population-based mortality of MS in incidence and prevalence cohorts.
Mult Scler J Exp Transl Clin
April 2023
Introduction: Mortality is an important feature of the natural history of multiple sclerosis (MS). We report the mortality of all individuals with MS in Iceland, identified in a nationwide population-based study.
Patients And Methods: The results are based on a prevalence cohort and an incidence cohort.
The association between age and language recovery in stroke remains unclear. Here, we used neuroimaging data to estimate brain age, a measure of structural integrity, and examined the extent to which brain age at stroke onset is associated with (i) cross-sectional language performance, and (ii) longitudinal recovery of language function, beyond chronological age alone. A total of 49 participants (age: 65.
View Article and Find Full Text PDFBackground: Studies on the association of cerebrovascular risk factors to magnetic resonance imaging detected brain infarcts have been inconsistent, partly reflecting limits of assessment to infarcts anywhere in the brain, as opposed to specific brain regions. We hypothesized that risk-factors may differ depending on where the infarct is located in subcortical-, cortical-, and cerebellar regions.
Methods: Participants (n=2662, mean age 74.
Article Synopsis
- The study aims to investigate the genetic and lifestyle factors that contribute to MRI-defined brain infarcts (BI) using large population cohorts.
- Researchers conducted meta-analyses on data from 18 cohorts, revealing a 17.7% prevalence of BI, particularly increasing after age 65, and identified two significant genetic loci associated with BI.
- High blood pressure and its genetic risk factors emerged as the most significant modifiable risk factors for BI, highlighting the need for more extensive datasets to confirm the findings.
Background: In this study, we examined multiple sclerosis (MS) point prevalence in the well-defined island population of Iceland.
Methods: This study included all registered residents of Iceland with MS on the prevalence day, December 31, 2007. All included patients met at least one of the following criteria: McDonald criteria; Poser criteria for clinically definite MS, laboratory-supported definite MS, clinically probable MS; or criteria for primary progressive MS.