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Patient-Reported Outcomes Measurement Information System Mobility Computerized Adaptive Testing Maintains High
Molly A Day1, Kyle J Hancock2, Ryan S Selley3
1Sports Medicine Institute, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York, U.S.A; Department of Orthopedics and Rehabilitation, University of Wisconsin, Madison, Wisconsin, U.S.A.
Summary
The Patient-Reported Outcomes Measurement Information System (PROMIS) Mobility (MO) measure is reliable and valid for hip arthroscopy patients. It shows good responsiveness and low test burden compared to older methods.
Area of Science:
- Orthopedics
- Rehabilitation Medicine
- Health Outcomes Research
Background:
- Hip arthroscopy is a common procedure for femoroacetabular impingement.
- Assessing patient outcomes is crucial for evaluating surgical success and guiding treatment.
- Existing patient-reported outcome measures may have limitations in terms of validity, responsiveness, or test burden.
Purpose of the Study:
- To evaluate the reliability, construct validity, and responsiveness of the Patient-Reported Outcomes Measurement Information System (PROMIS) Mobility (MO) measure.
- To compare PROMIS MO with established hip-specific outcome instruments in patients undergoing hip arthroscopy for femoroacetabular impingement.
- To assess the test burden and inclusivity (floor/ceiling effects) of PROMIS MO.
Main Methods:
- A cohort of 660 patients undergoing primary hip arthroscopic surgery completed baseline and 6-month follow-up assessments.
- Measures included PROMIS MO, PROMIS Pain Interference (PI), PROMIS Physical Function (PF), modified Harris Hip Score, International Hip Outcome Tool 33, VAS, and SEANE.
- Construct validity was assessed using Spearman correlations, responsiveness using generalized estimating equations, and test burden by question count.
Main Results:
- PROMIS MO demonstrated strong correlations with PROMIS PF (r=0.84), International Hip Outcome Tool 33 (r=0.73), PROMIS PI (r=-0.76), and modified Harris Hip Score (r=0.73).
- No significant floor or ceiling effects were observed for PROMIS MO, PI, or PF.
- PROMIS MO, along with legacy measures, showed significant responsiveness to change from baseline to 6 months, with comparable effect sizes.
Conclusions:
- PROMIS Mobility computerized adaptive testing is a reliable and valid measure for patients following hip arthroscopy.
- PROMIS MO offers significant responsiveness to clinical change and a lower test burden compared to traditional hip outcome instruments.
- The findings support the use of PROMIS MO as an effective patient-reported outcome measure in this population.
