The prosthesis evaluation questionnaire: reliability and cross-validation of the Turkish version

Abstract

[Purpose] Currently, there are a limited number of amputee-specific instruments for measuring prosthesis-related quality of life with good psychometric properties in Turkey. This study translated the Prosthetic Evaluation Questionnaire to Turkish and analyzed as well as discussed its construct validity and internal consistency. [Subjects and Methods] The Prosthetic Evaluation Questionnaire was adapted for use in Turkish by forward/backward translation. The final Turkish version of this questionnaire was administered to 90 unilateral amputee patients. Second evaluation was possible in 83 participants within a median 28 day time period. [Results] Point estimates for the intraclass correlation coefficient ranged from 0.69 to 0.89 for all 9 Prosthetic Evaluation Questionnaire scales, indicating good correlation. Overall Cronbach’s alpha coefficients ranged from 0.64 to 0.92, except for the perceived response subscale of 0.39. The ambulation subscale was correlated with the physical functioning subscales of Short Form-36 (SF-36) (r=0.48). The social burden subscale score of the Prosthetic Evaluation Questionnaire was correlated with social functioning subscales of SF-36 (r= 0.63). [Conclusion] The Turkish version of the Prosthetic Evaluation Questionnaire is a valid and reliable tool for implementation in the Turkish unilateral amputee population.

Reliability and validity of the Finnish version of the prosthesis evaluation questionnaire

“…In the present study four of the 10 subscales were slightly lower than the proposed benchmark, but these values can be considered acceptable. Benavent et al The results of the present study were similar to those the previous studies [3,6,7] as the internal consistency of the Appearance scale was 0.79 and that of the Residual Limb was 0.67. Internal consistency of the other eight scales were also mainly in concordance with previously published literature [3,[6][7][8].…”

“…Both general health and general pain correlated strongly with the scales of Usefulness, Ambulation, Transfers, Perceived Responses, Social Burden and Well-being. Previous psychometric studies of the PEQ have not assessed scale correlations with separate measurements of general health or general pain [3][4][5][6][7][8]. However, the Usefulness scale correlated well with General Health summary score in the study by Benavent et al [8], which also supports the findings of the present study.…”

“…It could be hypothesized however that the ceiling effect was a consequence of the answers of those participants who had been amputated 9 to 28 years before assessment took place as they received the highest scores in the Transfers scale [3]. Other validation studies of PEQ did not report floor-ceiling values [5][6][7][8]. In the present study, five percent of participants Thus, the present analysis provided evidence that it is somewhat unlikely that the PEQ would yield inaccurate maximum scores.…”

“…Cronbach's alpha varied in the remaining scales between 0.55 and 0.93 in that study[8]. Other studies have reported the internal consistency of Appearance and Residual Limb Health of 0.73-0.77 and 0.77-0.80, respectively[3,6,7].…”

“…The PEQ is an amputee-specific quality of life instrument that can be used to assess the HRQoL of lower-extremity prosthesis users. It has been further psychometrically investigated and validated after being translated into several other languages [4][5][6][7][8]. Furthermore, the PEQ has been used in a great variety of studies [9].…”