Physical Therapy Korea (한국전문물리치료학회지)

Korean Research Society of Physical Therapy (한국전문물리치료학회)
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Keyform Analysis of Rasch Measurement Accessible to Clinicians in Rehabilitation Clinics

  • Choi, Bong-Sam (Dept. of Physical Therapy, College of Health and Welfare, Woosong University)
  • Received : 2014.04.07
  • Accepted : 2014.05.07
  • Published : 2014.05.21
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Abstract

The versions of the Oswestry disability questionnaire (ODQ) is regarded as one of the most extensively used condition-specific instruments measuring disability resulting from low back pain. It has been shown to have adequate psychometrics, reliability, validity, and responsiveness as a whole, yet the summated total score of the instrument often provide little information to rehabilitation clinicians. A keyform analysis based on Rasch measurement model is an innovative way of illustrating the specific test items that an individual may or may not perform. By applying the keyform of the Rasch measurement model to the ODQ, rehabilitation clinicians may able to select more challenging ODQ items matching an individual's ability and document them as attainable treatment goals. The results demonstrated how a keyform analysis assist to setting possible goals for the treatment of individuals with low back pain. Forty-two individuals with low back pain were recruited from rehabilitation clinics in Gainesville, Florida. A series of Rasch analyses on the 10 items of the ODQ were performed using Winsteps software. The performance of two individuals on those 10 items was illustrated on the keyform. The keyform analysis of the Rasch measurement model may be translated into a useful tool for making clinical judgements.

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References

  1. Bossons CR, Levy J, Sutterlin CE 3rd. Reconstructive spinal surgery: Assessment of outcome. South Med J. 1996;89(11):1045-1052. https://doi.org/10.1097/00007611-199611000-00004
  2. Fairbank J. Revised oswestry disability questionnaire. Spine(Phila Pa 1976). 2000;25(19):2552.
  3. Fairbank JC, Couper J, Davies JB, et al. The oswestry low back pain disability questionnaire. Physiotherapy. 1980;66(8):271-273.
  4. Fairbank JC, Pynsent PB. The oswestry disability index. Spine(Phila Pa 1976). 2000;25(22):2940-2952. https://doi.org/10.1097/00007632-200011150-00017
  5. Fritz JM, Irrgang JJ. A comparison of a modified oswestry low back pain disability questionnaire and the quebec back pain disability scale. Phys Ther. 2001;81(2):776-788.
  6. Holmqvist K, Kamwendo K, Ivarsson AB. Occupational therapists' descriptions of their work with persons suffering from cognitive impairment following acquired brain injury. Scand J Occup Ther. 2009;16(1):13-24. http://dx.doi.org/10.1080/11038120802123520
  7. Institute for objective measurement. Instantaneous measurement and diagnosis [Internet]. Durham, 1997 June [Cited 2014 May 21]. Available from: http://www.rasch.org/memo60.htm
  8. Kay TM, Myers AM, Huijbregts MPG. How far have we come since 1992? A comparative survey of physiotherapists' use of outcome measures. Physiother Can. 2001;53:268-275.
  9. Kielhofner G, Dobria L, Forsyth K, et al. The construction of keyforms for obtaining instantaneous measures from the occupational performance history interview rating scales. OTJR (Thorofare NJ). 2005;25(1):23-32.
  10. Kline RB. Book review: Psychometric theory (3rd ed.). J Psychoeduc Assess. 1999;17(3):275-280. https://doi.org/10.1177/073428299901700307
  11. Lu YM, Wu YY, Hsieh CL, et al. Measurement precision of the disability for back pain scale-by applying Rasch analysis. Health Qual Life Outcomes. 2013;11(119):1-10. http://dx.doi.org/10.1186/1477-7525-11-119
  12. Muller U, Roder C, Greenough CG. Back related outcome assessment instruments. Eur Spine J. 2006;15(Suppl1):S25-S31. https://doi.org/10.1007/s00586-005-1054-8
  13. Nunnally JC, Bernstein IH. Psychometric theory. 3rd ed. New York, McGraw-Hill, 1994:275-280.
  14. Page SJ, Shawaryn MA, Cernich AN, et al. Scaling of the revised oswestry low back pain questionnaire. Arch Phys Med Rehabil. 2002;83 (11):1579-1584. https://doi.org/10.1053/apmr.2002.34604
  15. Velozo CA, Peterson E. Developing meaningful fear of falling measures for community dwelling elderly. Am J Phys Med Rehabil. 2001;80(9):662-673. https://doi.org/10.1097/00002060-200109000-00006
  16. Velozo CA, Woodbury ML. Translating measurement findings into rehabilitation practice: An example using Fugl-Meyer assessment-upper extremity with patients following stroke. J Rehabil Res Dev. 2011;48(10):1211-1222. https://doi.org/10.1682/JRRD.2010.10.0203
  17. White LJ, Velozo CA. The use of Rasch measurement to improve the oswestry classification scheme. Arch Phys Med Rehabil. 2002;83(6): 822-831. https://doi.org/10.1053/apmr.2002.32685
  18. Wright BD, Linacre JM. Reasonable mean-square fit values. Rasch Measurement Transactions. 1994;8(3):370.