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09-08-2017 | Uitgave 2/2018

Quality of Life Research 2/2018

A method to create a standardized generic and condition-specific patient-reported outcome measure for patient care and healthcare improvement

Quality of Life Research > Uitgave 2/2018
Karen E. Schifferdecker, Susan E. Yount, Karen Kaiser, Anna Adachi-Mejia, David Cella, Kathleen L. Carluzzo, Amy Eisenstein, Michael A. Kallen, George J. Greene, David T. Eton, Elliott S. Fisher



Patient-reported outcome measures (PROMs), which are generic or condition-specific, are used for a number of reasons, including clinical care, clinical trials, and in national-level efforts to monitor the quality of health care delivery. Creating PROMs that meet different purposes without overburdening patients, healthcare systems, providers, and data systems is paramount. The objective of this study was to test a generalizable method to incorporate condition-specific issues into generic PROM measures as a first step to producing PROMs that efficiently provide a standardized score. This paper outlines the method and preliminary findings focused on a PROM for osteoarthritis of the knee (OA-K).


We used a mixed-methods approach and PROMIS® measures to test development of a combined generic and OA-K-specific PROM. Qualitative methods included patient focus groups and provider interviews to identify impacts of OA-K important to patients. We then conducted a thematic analysis and an item gap analysis: identified areas covered by existing generic PROMIS measures, identified “gap” areas not covered, compared gap areas to legacy instruments to verify relevance, and developed new items to address gaps. We then performed cognitive testing on new items and drafted an OA-K-specific instrument based on findings.


We identified 52 existing PROMIS items and developed 24 new items across 14 domains.


We developed a process for creating condition-specific instruments that bridge gaps in existing generic measures. If successful, the methodology will create instruments that efficiently gather the patient’s perspective while allowing health systems, researchers, and other interested parties to monitor and compare outcomes over time, conditions, and populations.

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