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Musculoskeletal Function Assessment instrument: criterion and construct validity

R Engelberg1, D P Martin, J Agel

  • 1Department of Orthopaedics, University of Washington, Seattle 98195, USA.

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
|March 1, 1996
PubMed
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The Musculoskeletal Function Assessment (MFA) is a valid tool for measuring health status in patients with extremity musculoskeletal disorders. Its criterion and construct validity were confirmed against clinical measures and patient data.

Area of Science:

  • Orthopedics
  • Rehabilitation Medicine
  • Health Outcomes Research

Background:

  • Musculoskeletal disorders of the extremities are common in clinical practice.
  • A validated health status instrument is needed for assessing these patients.
  • The Musculoskeletal Function Assessment (MFA) was developed to address this need.

Purpose of the Study:

  • To evaluate the criterion and construct validity of the Musculoskeletal Function Assessment (MFA) instrument.
  • To establish the MFA's reliability and accuracy in assessing patient functioning.

Main Methods:

  • Criterion validity was assessed by comparing MFA scores with physician ratings and standard clinical measures.
  • Construct validity was examined against existing health status measures and demographic characteristics.

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  • Discriminant construct validity was tested using patient disease groups.

    • Main Results:

    • Significant correlations were found between MFA scores, physician ratings, and clinical measures, supporting criterion validity (p < or = 0.05).
    • Construct validity was supported by alignment with clinical hypotheses and demographic analyses.
    • Discriminant construct validity was demonstrated through analysis of MFA scores by patient disease groups (p < or = 0.01).

    Conclusions:

    • The Musculoskeletal Function Assessment (MFA) instrument demonstrates strong criterion and construct validity.
    • The MFA is a reliable tool for assessing the health status of patients with musculoskeletal disorders of the extremities.