Abstract
The Prosthetic Upper Extremity Functional Index (PUFI) was developed by the authors' clinical research group to evaluate the extent to which a child actually uses a prosthetic limb for daily activities, the comparative ease of task performance with and without the prosthesis, and its perceived usefulness. The PUFI's test-retest and interrater reliability were evaluated with 24 children. Intraclass coefficients (ICCs) were calculated for each of four subscales of the PUFI—specifically, method of performance, ease of prosthetic use, usefulness of the prosthesis, and ease of performance without the prosthesis. The ICCs were greater than 0.65, indicating good test-retest reliability for the older-child respondents (n = 10) and fair to good reliability (ICCs, 0.40 to 0.84) for the parent respondents overall (n = 21). Interrater (child-parent) reliability was lower, with ICCs from 0.30 to 0.77. This finding was not unexpected, since a child and parent may rate in the context of different functional environments. The prosthesis was used 53% of the time by older children and more than 75% of the time by younger children.The results provide evidence that the PUFI has good test-retest reliability overall as a measure of a child's ability to perform upper extremity activities with a prosthesis.
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