Prosthetics Research Study
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PEQ


1. PEQ

Patient input is an essential component in the delivery of optimal health care, particularly in evaluating functional disability and health-related quality of life. In the middle of the last decade, the evaluation of patients with amputations was limited due to the lack of appropriate measurement instruments for quantified self-reporting of function and health status. Instruments designed to measure these concepts in the general population were not very useful because they did not assess many of the unique conditions relevant to persons with limb amputations.

The Prosthesis Evaluation Questionnaire (PEQ) was developed from 1995-1997 to fill the need for a comprehensive self-report instrument for individuals with lower limb loss. (Legro 1998). Psychometric analysis supported the reliability and validity of the PEQ for evaluating the function of the prosthesis and the major health related quality of life domains. The PEQ has been widely used in rehabilitation health service research settings. In recent years, other instruments have been developed that assess prosthetic use, factors facilitating prosthetic use, or the patients’ ability to perform various skills. However, the PEQ remains a unique instrument with comprehensive multidimensional scales for evaluating both prosthesis function and prosthesis related quality of life.

2. Guide for Use of the Prosthesis Evaluation Questionnaire (PEQ)

The original PEQ is a self-administered questionnaire consisting of eighty-two items with a linear analog scale response format. Nine scales are computed from forty-two items (ambulation, appearance, frustration, perceived response, residual limb health, social burden, sounds, utility, well being). The forty remaining items pertain to other evaluation areas and are not grouped into to scales.

This guide contains coding instructions for all the questions. Most questions in the PEQ use a visual analog scale format. Each visual analog scale is scored as a continuous numerical variable measured as the distance in millimeters from the left endpoint of the measured from the left (0-100).

3. PEQ Addendum

Recently, in order to make the PEQ more comprehensive in design by including the fundamental concerns of amputees – falls and stumbles while using a prosthesis. Additional domains have been identified that could have appreciable importance in evaluating prosthetic function and prosthesis related quality of life. Of these proposed domains, mental energy expenditure while using a prosthesis, which refers to the need to think about and focus on working and moving. Another domain that has been identified as a fundamental area of concern to people with lower limb loss is ‘falls’. Studies have shown that falling is prevalent among persons with lower extremity amputation and that falling and the fear of falling can impact mobility and functional level.

The addendum is composed of 14 questions pertaining to Stumbles, Falls and Mental energy. Each question has been designed using a visual analog scale as in the original PEQ. Currently, efforts toward the clarification and validation of the addendum are being conducted.

"The addendum to the PEQ was first developed in 2002. Through focus groups, and iterative designs over the past two years we have been steadily working toward a tool that can be disseminated with the PEQ to measure aspects of mental energy, stumbles and falls among lower extremity amputees. Through much iteration, a prototype measurement tool (PEQ Addendum) was developed for pilot research in early 2003. Most recently the Addendum has been used as a measurement tool in a 20 subject 2 year case study. Upon evaluation of the data, the results of the self reported addendum data do not match the structured oral interview responses. At this time, this indicates that the Addendum is not yet adequate for public dissemination."

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Available Documents

Prosthesis Evaluation Questionnaire (PEQ)
The PEQ is a self-administered questionnaire consisting of eighty-two items with a linear analog scale response format. Nine scales are computed from forty-two items (ambulation, appearance, frustration, perceived response, residual limb health, social burden, sounds, utility, well being). The forty remaining items pertain to other evaluation areas and are not grouped into to scales.

PEQ Evaluation Guide
The PEQ Evaluation Guide contains coding instructions for all the questions. Most questions in the PEQ use a visual analog scale format. Each visual analog scale is scored as a continuous numerical variable measured as the distance in millimeters from the left endpoint of the measured from the left (0-100).

PEQ Use Survey
The PEQ Use Survey is intended to help PRS better understand how the PEQ is being used in clinical, research, and other applications. If you or your organization uses the PEQ, we request you complete this form and return it to PRS via email (info@prs-research.org) or fax (206) 903-8141.


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