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  • Title: A method for measuring quality of life through subjective weighting of functional status.
    Author: Stineman MG, Wechsler B, Ross R, Maislin G.
    Journal: Arch Phys Med Rehabil; 2003 Apr; 84(4 Suppl 2):S15-22. PubMed ID: 12692767.
    Abstract:
    OBJECTIVE: To apply a new tool to understand the quality of life (QOL) implications of patients' functional status. DESIGN: Results from the Features-Resource Trade-Off Game were used to form utility weights by ranking functional activities by the relative value of achieving independence in each activity compared with all other component activities. The utility weights were combined with patients' actual levels of performance across the same activities to produce QOL-weighted functional status scores and to form "value rulers" to order activities by perceived importance. SETTING: Persons with severe disabilities living in the community and clinicians practicing in various rehabilitation disciplines. PARTICIPANTS: Two panels of 5 consumers with disabilities and 2 panels of 5 rehabilitation clinicians. INTERVENTIONS: The 4 panels played the Features Resource Trade-Off Game by using the FIMT(TM) instrument definitions. MAIN OUTCOME MEASURES: Utility weights for each of the 18 FIM items, QOL-weighted FIM scores, and value rulers. RESULTS: All 4 panels valued the achievement of independence in cognitive and communication activities more than independence in physical activities. Consequently, the unweighted FIM scores of patients who have severe physical disabilities but relatively intact cognitive skills will underestimate QOL, while inflating QOL in those with low levels of independence in cognition and communication but higher physical function. CONCLUSION: Independence in some activities is more valued than in others; thus, 2 people with the same numeric functional status score could experience very different QOL. QOL-weighted functional status scores translate objectively measured functional status into its subjective meaning. This new technology for measuring subjective function-related QOL has a variety of applications to clinical, educational, and research practices.
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