Darzins, S., Imms, C. & Di Stefano, M. (2017). Measurement of activity limitations and participation restrictions: Examination of ICF-linked content and scale properties of the PC-part and FIM instruments. Disability and Rehabilitation,39(10), D. Muller. 1025-1038. United Kingdom: Taylor & Francis. Retrieved from https://doi.org/10.3109/09638288.2016.1172670
Purpose: To explore the operationalization of activity and participation-related measurement constructs through comparison of item phrasing, item response categories and scoring (scale properties) for two separate instruments targeting activities of daily living.
Method: Personal Care Participation Assessment and Resource Tool (PC-PART) item content was linked to ICF categories using established linking rules. Previously reported ICF-linked FIM content categories and ICF-linked PC-PART content categories were compared to identify common ICF categories between the instruments. Scale properties of both instruments were compared using a patient scenario to explore the instruments’ separate measurement constructs.
Results: The PC-PART and FIM shared 15 of the 53 level two ICF-linked categories identified across both instruments. Examination of the instruments’ scale properties for items with overlapping ICF content, and exploration through a patient scenario, provided supportive evidence that the instruments measure different constructs.
Conclusions: While the PC-PART and FIM share common ICF-linked content, they measure separate constructs. Measurement construct was influenced by the instruments’ scale properties. The FIM was observed to measure activity limitations and the PC-PART measured participation restrictions. Scrutiny of instruments’ scale properties in addition to item content is critical in the operationalization of activity and participation-related measurement constructs.
School of Allied Health
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