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Author Spotlight: Fu's Subcutaneous Needling for Knee Osteoarthritis Pain
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The osteoarthritis knowledge scale.

Ben Darlow1, Chris Krägeloh2, J Haxby Abbott1

  • 1University of Otago Wellington, Wellington, New Zealand.

Musculoskeletal Care
|December 27, 2022
PubMed
Summary
This summary is machine-generated.

The Osteoarthritis Knowledge Scale (OAKS) effectively measures osteoarthritis knowledge in hip and knee patients. While generally reliable, the hip-specific version requires cautious application due to lower test-retest reliability.

Keywords:
hip osteoarthritisknee osteoarthritisknowledgepatient-reported outcome measurepsychometricsreproducibility of results

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Area of Science:

  • Rheumatology
  • Psychometrics
  • Health Education

Background:

  • Accurate patient knowledge is crucial for effective osteoarthritis (OA) self-management.
  • Existing knowledge scales may require validation for specific joint involvement (hip/knee).

Purpose of the Study:

  • To evaluate the measurement properties of the Osteoarthritis Knowledge Scale (OAKS) for both hip and knee OA.
  • To confirm the psychometric adequacy of the OAKS for diverse patient populations.

Main Methods:

  • Rasch analysis was employed to assess psychometric properties in participants with hip OA, knee OA, and no OA.
  • Test-retest reliability and measurement error were calculated for hip and knee OA versions.

Main Results:

  • The final 11-item OAKS demonstrated unidimensionality and was not influenced by demographic factors or scale version.
  • Overall test-retest reliability was good (ICC=0.81), with the knee version showing higher reliability (0.85) than the hip version (0.66).
  • Smallest detectable changes were 9 points overall, 11 for hip, and 8 for knee OA.

Conclusions:

  • The OAKS is a psychometrically sound and unidimensional tool for assessing OA knowledge in individuals with or without hip and knee OA.
  • The hip OA version's test-retest reliability warrants careful consideration in specific clinical applications.