Study Notes on International Classification of Function (ICF) and Patient Reported Outcomes Measures (PROMs)

The International Classification of Function (ICF)

  • The ICF, or International Classification of Function, has existed for many years, introduced as a solution to categorize the effects of disabilities and health conditions on individuals' lives.
  • Presented as a resource on platform d12, termed the beginner's guide to ICF, providing a thorough understanding of its applications and importance.

Overview of the ICF

  • The ICF moves away from solely biomedical perspectives, advocating for the biopsychosocial model:
    • Biopsychosocial Model: Suggests considering the biological, psychological, and social components when evaluating a person's health.
  • Key emphasis on the necessity to understand how disorders affect life beyond just physical impacts.
    • Example:
    • Diabetes affects the body's ability to process glucose, impacting overall physical function and leading to circulatory issues, neuropathy, and infections.
    • These physical changes then influence daily activities and social interactions, for instance, leading to limited mobility and participation in social activities by affecting walking ability.

Clinical Implications of ICF

  • Importance of considering
    • Personal limitations in physical conditions and how these relate to daily activities and social participation.
    • For example, a diabetic patient may not enjoy their usual social activities due to mobility issues created by diabetic complications.
  • Subjectivity in Functionality:
    • What constitutes a problem varies individually; someone who doesn’t walk much may not be affected by foot problems, unlike an avid walker who would experience significant impact.

Patient Case Studies

  • Example 1: Nursing Home Stroke Patient
    • Experienced significant math issues but had no functional need since financial management was handled by family.
  • Example 2: Accountant Post-Stroke
    • Had milder math difficulties but was at risk of losing his job due to his profession requiring complex calculations.
  • Lesson:
    • Functionality varies by the individual's life structure; deficits may not affect all people in the same way.

Terminology and Definitions

  • Body Functions and Structures:
    • Physiological functions of body systems (e.g., swallowing, speech) and anatomical parts of the body
  • Activities:
    • Task execution strategies (e.g., walking, eating)
  • Participation:
    • Engagement in life situations (e.g., working, social interaction)
  • Impairments:
    • Problems with body functions or structures
  • Activity Limitations:
    • Difficulties an individual may experience in executing activities
  • Participation Restrictions:
    • Problems an individual may face in involvement in life situations

The Hierarchical Model of ICF

  • Causal Relationship: Medical conditions lead to impairments; impairments lead to activity limitations; and activity limitations lead to participation restrictions.
  • Individual need: The impact of limitations is context-dependent based on individual life roles and tasks.

Treatment Goals Based on ICF

  • Treatment plans must reflect functional and participation-oriented goals rather than purely body function metrics.
  • Examples of ICF goals:
    • Patient will effectively communicate needs to family 100% of the time.
    • Patient will independently eat meals safely and efficiently for all consistencies 100% of the time.

Patient-Reported Outcomes Measures (PROMs)

  • Introduced as tools to capture how health issues affect patients' lives concerning the ICF.
    • Examples include VOICE Handicap Index (VHI), Pediatric VHI, and various quality of life measures.
  • Designed to evaluate and improve clinical understanding of patients' lived experiences in relation to their health.

VHI and Its Structure

  • VHI Overview:
    • A scale designed to measure the handicap experienced due to voice disorders, applicable across lifespan and conditions.
    • Divided into three domains: functional, physical, and emotional.
    • Consists of 30 questions, forming a total possible score of 120.
  • Score Interpretation:
    • Lower scores indicate fewer problems, while higher scores reflect significant issues impacting the patient’s quality of life.
    • General ranges:
    • 0-40: Mild problems
    • 40-60: Moderate problems
    • 60-120: Severe problems

The VHI 10 and Pediatric VHI

  • VHI 10:
    • Shortened version of VHI consisting of only ten targeted questions. Maintains validity and is less time-consuming for patients.
  • Pediatric VHI:
    • Specifically focused on children, relying on parent questionnaires to capture functional, physical, and emotional aspects related to their child's voice issues and challenges.

Additional Measures of Voice Quality

  • Voice-Related Quality of Life (VRQOL):
    • A scale exploring voice impact across a 1 to 5 rating rather than frequency, focusing more on severity of impact, allowing more nuanced insights into daily experiences.
  • Each measure and scale concluded via rigorous testing, with validity and reliability ensuring they appropriately address real-life implications of voice disorders.

Critical Evaluation of Measures

  • Discusses the importance of content validity, ensuring that each measure encompasses the necessary range of information needed to fully understand patient experiences.
  • A reminder that statistical data (mean scores, standard deviations, etc.) provide insights but should not overshadow the patient's individual responses and experiences.
    • Relying solely on numbers can lead to misinterpretation.

Conclusion and Use of Measures

  • PROMs and quality of life assessments are essential in voice therapy, allowing clinicians to gather vital information for a comprehensive understanding of patient experiences and performance.
  • The ICF framework serves as a guiding principle throughout the evaluation, focusing on the holistic view of health and disability.