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Interpreting Patient-Reported Outcome Results: Is One Minimum Clinically Important Difference Really Enough?

Dylan L McCreary1, Benjamin C Sandberg1,2, Debra C Bohn1,3

  • 1University of Minnesota, Minneapolis, USA.

Hand (New York, N.Y.)
|November 22, 2018
PubMed
Summary

The minimum clinically important difference (MCID) for wrist fracture recovery varies significantly based on how it

Keywords:
distal radius fractureminimum clinically important difference (MCID)outcomespatient-rated wrist evaluation (PRWE)patient-reported outcomes

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Area of Science:

  • Orthopedics
  • Clinical Research
  • Patient-Reported Outcomes

Background:

  • Patient-reported outcomes (PROs) are essential for evaluating clinical trial results.
  • Interpreting PROs requires understanding the minimum clinically important difference (MCID).
  • The Patient-Rated Wrist Evaluation (PRWE) is a PRO tool for distal radius fractures.

Purpose of the Study:

  • To investigate how injury characteristics, treatment, and calculation methods affect the PRWE MCID in distal radius fractures.
  • To test the hypothesis that these factors significantly influence the MCID.

Main Methods:

  • 197 patients with distal radius fractures completed PRWE surveys preoperatively and at 6 and 12 weeks postoperatively.
  • MCID was calculated using two strategies: anchor-based and distribution-based methods.
  • Data included demographics, injury characteristics (AO/OTA classification), and treatment modality.

Main Results:

  • MCID values differed across analytical methods and time points.
  • Distribution-based MCID showed consistency across variables.
  • Anchor-based MCID varied significantly with AO/OTA fracture classification, treatment, and time.

Conclusions:

  • MCID for distal radius fractures is substantially influenced by assessment timing, analytical method, treatment, and fracture classification.
  • Incorporating anchor questions is recommended for accurate MCID determination in specific patient populations within clinical trials.
  • This ensures precise interpretation of PRO data in orthopedic research.