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Related Concept Videos

Longitudinal Research02:20

Longitudinal Research

12.0K
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
12.0K
Observational Studies01:11

Observational Studies

8.7K
Observational studies are a type of analytical study where researchers observe events without any interventions. In other words, the researcher does not influence the response variable or the experiment's outcome.
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One...
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Aging01:26

Aging

59
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
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Related Experiment Video

Updated: Jul 12, 2025

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
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Multiple sclerosis in the elderly: a retrospective cohort study.

Anne Zinganell1, Georg Göbel2, Klaus Berek1

  • 1Department of Neurology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria.

Journal of Neurology
|October 19, 2023
PubMed
Summary
This summary is machine-generated.

This study reveals that comorbidities, pyramidal/cerebellar signs, and frequent relapses are poor prognostic indicators in elderly multiple sclerosis (MS) patients. These factors are crucial for understanding disease progression in an underrepresented population.

Keywords:
ComorbiditiesDisease-modifying therapiesElderlyImmunosenescenceLate-onset multiple sclerosisMultiple sclerosis

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Area of Science:

  • Neurology
  • Clinical Research
  • Geriatrics

Background:

  • Limited understanding of disease course, prognosis, and treatment in elderly multiple sclerosis (MS) patients.
  • Elderly MS patients are often underrepresented in clinical trials.

Purpose of the Study:

  • To characterize disease progression, including disability and relapses, in elderly MS patients.
  • To quantify disease-modifying therapy (DMT) use and identify comorbidities and risk factors for progression in this demographic.

Main Methods:

  • Retrospective study of 1200 Austrian MS patients aged over 55.
  • Data collected from 15 MS centers, including demographics, symptoms, relapses, disability, DMTs, and comorbidities.

Main Results:

  • Median observation time was 17.1 years; 80% had relapsing onset.
  • Number of comorbidities, pyramidal/cerebellar signs, and higher relapse rates were associated with worse outcomes.
  • Each additional comorbidity increased the risk of reaching an Expanded Disability Status Scale (EDSS) of 6 by 22%.

Conclusions:

  • Comorbidities, pyramidal/cerebellar signs, and relapse frequency are unfavorable prognostic factors in elderly MS patients.
  • Findings address knowledge gaps regarding disease course and prognosis in this population.
  • Results may inform future therapeutic strategies and clinical trial design for elderly MS patients.