Back pain monitoring response to therapy
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Zehra Malik, M.B.B.S[2]
Overview
Methods of determining the minimal clinically important difference (MCID)
The Oswestry low back pain disability questionnaire (ODQ) contains 10 questions that have 5-point Likert scale answers and can measure the response to therapy.[1]
- The minimal clinically important differences (MCID) has been proposed as >0.5 standard deviation improvement.[2]
- MCID of 12.8 has been proposed[3]
- Copay et al used various methods to determine the optimal MCID[3].
- Receiver-operating characteristic curve derived MCID: " The optimal cut-off value for a ROC curve corresponds to the point of optimal trade-off between sensitivity and specificity "
- Half a standard deviation: Template:Sfrac \times {SD}
- Standard error of measurement SD \times \sqrt{1 - r}, "where SD is the standard deviation of the baseline scores and r is the test-retest reliability coefficient"
- Minimum detectable change: 1.96 \times \sqrt{2} \times{SEM}
- Effect size derived MCID: "multiplying the SD of the baseline scores by 0.2 (the small effect size)"
- Copay et al used various methods to determine the optimal MCID[3].
Recommendations for the minimal clinically important difference (MCID)
Copay calculated the MCID to be 12.8[3]. Davidson recommends an MCID of 10.5 or 15[4].
Vianin's literature review finds the range of MCIDs proposed is 4 to 10.5.[5]
See also
References
- ↑ Fairbank JC, Couper J, Davies JB, O'Brien JP (1980). "The Oswestry low back pain disability questionnaire". Physiotherapy. 66 (8): 271–3. PMID 6450426.
- ↑ Delitto A, Piva SR, Moore CG, Fritz JM, Wisniewski SR, Josbeno DA; et al. (2015). "Surgery versus nonsurgical treatment of lumbar spinal stenosis: a randomized trial". Ann Intern Med. 162 (7): 465–73. doi:10.7326/M14-1420. PMC 6252248. PMID 25844995. Review in: Evid Based Med. 2016 Feb;21(1):31
- ↑ 3.0 3.1 3.2 Copay AG, Glassman SD, Subach BR, Berven S, Schuler TC, Carreon LY (2008). "Minimum clinically important difference in lumbar spine surgery patients: a choice of methods using the Oswestry Disability Index, Medical Outcomes Study questionnaire Short Form 36, and pain scales". Spine J. 8 (6): 968–74. doi:10.1016/j.spinee.2007.11.006. PMID 18201937.
- ↑ Davidson M, Keating JL (2002). "A comparison of five low back disability questionnaires: reliability and responsiveness". Phys Ther. 82 (1): 8–24. doi:10.1093/ptj/82.1.8. PMID 11784274.
- ↑ Vianin M (2008). "Psychometric properties and clinical usefulness of the Oswestry Disability Index". J Chiropr Med. 7 (4): 161–3. doi:10.1016/j.jcm.2008.07.001. PMC 2697602. PMID 19646379.