Correlation between Cognitive Abilities and Social Functioning in Patients with Multiple Sclerosis Notes

Correlation Between Cognitive Abilities and Social Functioning in Patients with MS

Abstract

  • Cognitive impairment exists in all stages and subtypes of Multiple Sclerosis (MS).
  • Cognitive dysfunction significantly impacts the quality of life of individuals with MS, independent of physical symptoms.
  • Major consequence: Unemployment, leading to personal, social, and financial ramifications.
  • Research indicates a correlation between cognition and unemployment, mediating the effects of disability on job status.

Introduction

  • Multiple Sclerosis (MS): An inflammatory condition affecting the central nervous system (CNS); leading cause of non-traumatic disability in young adults.
  • Common non-motor aspects include depression and cognitive dysfunction, which are more prevalent in MS patients than in the general population.
  • Studies show 40%-65% of MS patients exhibit cognitive impairment on neuropsychological testing.
  • Within 10 years of diagnosis, up to 50% of individuals with MS may face unemployment.

Aims of the Study

  • Primary Aim: Assess social functioning related to daily living activities and employment in MS patients and their cognitive performance correlation.
  • Secondary Aim: Investigate the association of employment with demographic factors, emotional states, and disease progression.

Materials and Methods

  • Study Participants: 100 MS patients and a control group of 40 healthy subjects.
  • Eligibility Criteria: Patients met revised McDonald diagnostic criteria and had no prior neurological deficits. Average age of patients: 39.46 ± 9.27 years. Average disease duration: 7.91 ± 5.53 years.
  • Groups: Patients classified as either employed (part-time/full-time) or unemployed.
  • Assessment Tools: Expanded Disability Status Scale (EDSS) for disability assessment, cognitive performance evaluated using a battery of neuropsychological tests.

Key Cognitive Domains Assessed

  1. Paced Auditory Serial Addition Test (PASAT): Evaluates information processing speed, sustained and divided attention, calculation ability, using auditory stimulus presentations.
  2. Digit Span Forward (DSF): A subtest assessing attention efficiency; subjects repeat a sequence of numbers in the same order. Backward span evaluates working memory.
  3. Verbal Fluency Test (VFT): Assesses spontaneous word retrieval across categories (semantic and phonemic).
  4. Visual Analogue Fatigue Scale (VAFS): Measures subjective fatigue experiences across 18 items.
  5. Symbol Digit Modalities Scale (SDMT): Measures psychomotor speed, with sensitivity to brain damage and cognitive changes.

Results

  • Significant connections were established between cognitive test performance and unemployment, along with daily living activities.
  • The unemployed patients tended to be older, with longer disease duration, higher fatigue levels, and greater memory impairments.
  • Common reasons for job loss included:
    • Excessive fatigue (44%)
    • Movement disorders (41%)
    • Cognitive impairment (30%)
    • Pain (15%)
    • Dizziness (15%)
    • Emotional disorders, dexterity issues (11%), and bladder/bowel disorders (7%)
    • Visual deficits (7%) and heat sensitivity (4%)

Conclusions

  • Unemployment in MS patients correlates with severe depression and cognitive dysfunction, emphasizing the need for effective interventions to address these impairments and support employment.