Validation of the orthotics and prosthetics user survey upper extremity functional status module in people with unilateral upper limb amputation

Helena Burger*, Franco Franchignoni, Allen W. Heinemann, Stanislava Kotnik, Andrea Giordano

*Corresponding author for this work

Research output: Contribution to journalArticle

59 Scopus citations

Abstract

Objective: To evaluate the measurement properties of the Upper Extremity Functional Status module of the Orthotics and Prosthetics User Survey (OPUS). Design: Methodological research on an outcome measure administered by clinical interview. Patients: A convenience sample of 61 adults who had unilateral upper limb amputations and completed rehabilitation at the Institute for Rehabilitation in Ljubljana, Slovenia, at least one year prior to interview. Thirty-four patients had undergone amputation of the dominant hand. Four patients did not use a prosthesis. Methods: Rating scale analysis (Rasch model) was used to evaluate functioning of the rating scale categories, the validity of the measure by examining fit of items to the latent trait, and the hierarchy of item difficulties compared with expectations of the construct. Results: Rasch analysis allowed us to improve the Upper Extremity Functional Status by rescoring to reduce the response categories from 5 to 4, and identifying 19 of 23 items that are useful to measure upper extremity function. The results allow us to have high coofidence in the consistency of both person-ability and item-difficulty estimates. Conclusion: This revised Upper Extremity Functional Status is a promising instrument to measure the degree of manual functioning after a unilateral upper limb amputation.

Original languageEnglish (US)
Pages (from-to)393-399
Number of pages7
JournalJournal of Rehabilitation Medicine
Volume40
Issue number5
DOIs
StatePublished - May 1 2008

Keywords

  • Amputation
  • Artificial limbs
  • Outcome assessment
  • Psychometrics

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

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