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Correlation Between the American Medical Association Guides to the Evaluation of Permanent Impairment and the Medical Outcomes Study 36-Item Short Form

This study has been completed.
Sponsor:
Collaborators:
McMaster University
Onze Lieve Vrouwe Gasthuis
Information provided by (Responsible Party):
JointResearch
ClinicalTrials.gov Identifier:
NCT01760551
First received: December 28, 2012
Last updated: January 3, 2013
Last verified: January 2013
  Purpose

The American Medical Association's (AMA) Guides to the Evaluation of Permanent Impairment is used to rate loss of function and determine compensation and ability to work after injury or illness. The AMA Guides are used by many different systems to determine compensable levels of impairment. However, there are few studies that evaluate reliability or construct validity. (1) In the professional community there exists considerable controversy regarding the accuracy and usefulness of the AMA Guides. (2,3) Commentaries have noted that the AMA Guides do not provide a valid, reliable, evidence-based system for the rating of impairments. (4) Some have argued that the impairment ratings do not reflect an individual's actual loss of function and quality of life (QOL). The AMA guides 5th edition was based on loss of range of motion (ROM). The new 6th edition of the AMA guides is based on diagnosis and inclusion of functional outcomes assessments in the determination of impairment ratings. (5) In the orthopaedic literature the use of patient-derived, objective outcome measures has substantially expanded QOL instruments are categorized as general health or as condition-specific questionnaires. The Medical Outcomes Study 36-Item Short Form (SF-36) is a general health-based survey of quality of life. It has been validated and is used widely across medical disciplines. (6) The SF-36 was constructed to survey health status in the Medical Outcomes Study. It was designed for use in clinical practice and research, health policy evaluations, and general population surveys. The SF-36 was constructed for self-administration by persons 14 years of age and older, and for administration by a trained interviewer in person or by telephone. (7) The SF-36 is perhaps the most widely used health-related quality of life (HRQoL) survey instrument in the world today. It is comprised of 36 items that assess eight health concepts: physical functioning, role limitations caused by physical health problems, role limitations caused by emotional problems, social functioning, emotional well-being, energy/fatigue, pain, and general health perceptions. Physical and mental health summary scores are also derived from the eight RAND-36 scales. (8) The aim of this study is to determine the amount of correlation between the by orthopaedic surgeon objectively calculated percentage of impairment scored by the American Medical Association guides to the evaluation of permanent impairment and the by patient subjectively indicated health-related quality of life scored by the SF-36.

Hypotheses: Because of and inclusion of functional outcomes assessments in the determination of impairment ratings the AMA guide 6th edition will have a better correlation with the SF-36. The 6th edition of the AMA guide is based on diagnosis en yield lower impairment percentages than the AMA guide 5th edition that is based on loss of ROM. The SF-36 will have better correlation with the impairment ratings for lower extremities injuries than for upper extremities because it is less valid for the upper extremities.


Condition
Trauma

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Retrospective
Official Title: Correlation Between the American Medical Association Guides to the Evaluation of Permanent Impairment and the Medical Outcomes Study 36-Item Short Form.

Resource links provided by NLM:


Further study details as provided by JointResearch:

Primary Outcome Measures:
  • Fifth or Sixth AMA Guide impairment rating [ Time Frame: Once at assessment of impairment consultation 1hour ] [ Designated as safety issue: No ]

    https://catalog.ama-assn.org/Catalog/product/product_detail.jsp?productId=OP025400

    https://catalog.ama-assn.org/Catalog/product/product_detail.jsp?productId=prod920005



Secondary Outcome Measures:
  • RAND 36 [ Time Frame: Once at assessment during impairment consultation for app 1hour ] [ Designated as safety issue: No ]
    http://www.ncbi.nlm.nih.gov/pubmed/19364637


Other Outcome Measures:
  • DASH [ Time Frame: Once at assessment during impairment consultation for app 1hour ] [ Designated as safety issue: No ]
    http://www.ncbi.nlm.nih.gov/pubmed/18473398


Enrollment: 250
Study Start Date: December 2010
Study Completion Date: December 2012
Primary Completion Date: December 2012 (Final data collection date for primary outcome measure)
Groups/Cohorts
Patients assessed with AMA guide fifth edition
Patients assessed with AMA guide sixth edition

  Eligibility

Ages Eligible for Study:   14 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population

Patients who have had a medical legal examination by an orthopaedic surgeon working at "Orthopedisch Expertise Centrum" and have completed a to Dutch translated SF-36 form.

Criteria

Inclusion Criteria:

  • All subjects who have had a medical legal examination

Exclusion Criteria:

  • exclusion if there is no calculation of the percentage of impairment by the American Medical Association guides to the evaluation of permanent impairment.

Age under 14 years

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01760551

Locations
Netherlands
Onze Lieve Vrouwe Gasthuis
Amsterdam, NH, Netherlands, 1091AC
Sponsors and Collaborators
JointResearch
McMaster University
Onze Lieve Vrouwe Gasthuis
  More Information

No publications provided

Responsible Party: JointResearch
ClinicalTrials.gov Identifier: NCT01760551     History of Changes
Other Study ID Numbers: JR201201
Study First Received: December 28, 2012
Last Updated: January 3, 2013
Health Authority: Netherlands: Medical Ethics Review Committee (METC)

Keywords provided by JointResearch:
Fracture
Trauma
impairment

ClinicalTrials.gov processed this record on November 23, 2014