Prosthetic profile of the amputee questionnaire: validity and reliability

The Prosthetic Profile of the Amputee (PPA) is a clinical follow-up questionnaire that measures the factors potentially related to prosthetic use and the actual use of the prosthesis by people with a lower extremity amputation. This profile is a report on the psychometric properties of the questionnaire. The PPA was administered, on two occasions, to 89 adults with lower extremity amputations. Test-retest data analysis demonstrated that the questionnaire was reliable in terms of repeatability. Strong test-retest agreements were obtained. When the PPA was assessed against the Reintegration to Normal Living (RNL) index, results supported the presence of construct validity. Data confirmed convergence of analogous constructs of the PPA questionnaire and the RNL index and showed evidence of discrimination between the more distantly related constructs. Based on the results of this study, we conclude that the PPA questionnaire is reliable and valid for clinical and research use.