Paula W Rushton1, William C Miller. 1. School of Occupational Therapy, University of Western Ontario, London, Ont, Canada. pwrushton@hotmail.com
Abstract
OBJECTIVE: To assess the interrater reliability, construct validity, and responsiveness of Goal Attainment Scaling (GAS) among patients who have had lower-extremity amputations. DESIGN: Pilot study comparing GAS with 2 functional measures with established reliability, validity, and responsiveness values. SETTING: Regional amputee program in southwestern Ontario. PARTICIPANTS: Ten patients (6 women, 4 men; mean age +/- standard deviation, 72.3+/-10.7 y) with unilateral lower-extremity amputations who were consecutively admitted to a regional amputee program. The ratio of transtibial to transfemoral amputations was 6:4. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Subjects were assessed by using GAS, the Barthel Index, and the Locomotor Capabilities Index (LCI) of the Prosthetic Profile of the Amputee. RESULTS: The interrater reliability of GAS was r=.67, and 63% of goals developed were identified independently by both investigators. The construct validity between GAS and the Barthel Index and the LCI was r=.44 and r=.35, respectively. GAS was more responsive than both the Barthel Index and the LCI, as indicated by the calculation of effect sizes and relative efficiencies. CONCLUSION: This pilot study suggests that GAS is a promising outcome measure for the rehabilitation of patients with lower-extremity amputations. Copyright 2002 by the American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation
OBJECTIVE: To assess the interrater reliability, construct validity, and responsiveness of Goal Attainment Scaling (GAS) among patients who have had lower-extremity amputations. DESIGN: Pilot study comparing GAS with 2 functional measures with established reliability, validity, and responsiveness values. SETTING: Regional amputee program in southwestern Ontario. PARTICIPANTS: Ten patients (6 women, 4 men; mean age +/- standard deviation, 72.3+/-10.7 y) with unilateral lower-extremity amputations who were consecutively admitted to a regional amputee program. The ratio of transtibial to transfemoral amputations was 6:4. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Subjects were assessed by using GAS, the Barthel Index, and the Locomotor Capabilities Index (LCI) of the Prosthetic Profile of the Amputee. RESULTS: The interrater reliability of GAS was r=.67, and 63% of goals developed were identified independently by both investigators. The construct validity between GAS and the Barthel Index and the LCI was r=.44 and r=.35, respectively. GAS was more responsive than both the Barthel Index and the LCI, as indicated by the calculation of effect sizes and relative efficiencies. CONCLUSION: This pilot study suggests that GAS is a promising outcome measure for the rehabilitation of patients with lower-extremity amputations. Copyright 2002 by the American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation
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