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Return to activity is a multi-faceted variable, not a discrete yes-no.

Julie Agel1, Jessica Schisel2, Edward Harvey3

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The Minnesota Activity Scale (MAS) offers a comprehensive 5-item patient-reported outcome to track return to activity after injury. It captures multifaceted aspects beyond a simple yes/no, improving treatment effectiveness assessment.

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Area of Science:

  • Rehabilitation science
  • Patient-reported outcomes
  • Clinical measurement

Background:

  • Assessing return to activity post-injury is crucial for evaluating treatment effectiveness.
  • Traditional measures often oversimplify return to activity as a binary outcome.
  • A nuanced understanding requires evaluating multiple facets of activity participation.

Purpose of the Study:

  • To develop and evaluate a patient-reported outcome measure for tracking return to activity after injury.
  • To create a tool that acknowledges the complexity of activity participation beyond a simple yes/no.
  • To provide a comprehensive understanding of treatment outcomes related to activity participation.

Main Methods:

  • Item development and evaluation were conducted.
  • The final 5-item set was tested in an observational clinical trial.
  • Descriptive statistics and test-re-test reliability (intra-class correlation, percent agreement) were used.

Main Results:

  • A 5-item scale, the Minnesota Activity Scale (MAS), was developed.
  • The MAS assesses preferred activity, participation frequency, impact of change, and limitations.
  • Over 30% reported changes in activity unrelated to injury, highlighting the need for multifactorial assessment.

Conclusions:

  • The Minnesota Activity Scale (MAS) provides standardized questions for comprehensive return to activity assessment.
  • It serves as a valuable marker of treatment effectiveness.
  • The scale captures the multifaceted nature of activity participation post-injury.