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Table 5 MCID values determined by different methods

From: Determining the clinical importance of treatment benefits for interventions for painful orthopedic conditions

 

Back pain

Method of MCID determination

Anchor: HTI a

Anchor: satisfaction b

Anchor-based

  

  Average change

2.9

3.4

  Change difference

1.4

1.9

  ROC

2.5

2.5

Combination of anchor-based and distribution-based methods

  SEM

0.4

0.4

  MDC

1.2

1.2

  1. From Copay 2008 [20].
  2. aThe HTI questionnaire asks patients to compare their health after treatment versus before treatment; the HTI answers are much better, somewhat better, about the same, somewhat worse, and much worse. Patients reporting being “somewhat better” or “about the same” were selected.
  3. bThe satisfaction questionnaire has five items (statements): “I can do the things I thought I would be able to do after surgery”; “I was helped as much as I thought I would be by my surgery”; “My pain was reduced as much as I expected it to be after surgery”; “The benefits of my care outweighed the setbacks it caused me”; “All things considered, I would have the surgery again for the same condition” to which patients can answer: definitively true, mostly true, don’t know, mostly false, or definitively false. Patients classified as “satisfied” and “don’t know” were selected.