Reliability of Outcome Measures for People With Lower-Limb Amputations: Distinguishing True Change From Statistical Error.
Background. Use of outcome measures to examine outcomes of amputation is complicated by a number of factors, including ease of administration and lack of scientific evidence to guide selection and interpretation. Objective. The purposes of this study were: (1) to estimate test-retest reliability of...
| Publicado en: | Physical Therapy Vol. 91; no. 4; pp. 555 - 566 |
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| Autores principales: | , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Oxford University Press / USA
Apr2011
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104868991&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104868991 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00319023 PTH jtl: Physical Therapy issn: 00319023 maglogo: N pubinfo: dt: Apr2011 vid: 91 iid: 4 pid: 10398 pub: Oxford University Press / USA artinfo: ui: 104868991 59911052 10.2522/ptj.20100287 NLM21310896 104868991 ppf: 555 ppct: 11 formats: fmt: @attributes: type: P tig: atl: Reliability of Outcome Measures for People With Lower-Limb Amputations: Distinguishing True Change From Statistical Error. aug: au: Resnik, Linda Borgia, Matthew affil: Research Health Scientist, Providence VA Medical Center, 830 Chalkstone Ave, Providence, RI 02908 (USA); Associate Professor (Research), Department of Community Health, Brown University, Providence, Rhode Island. sug: subj: Outcome Assessment Measurement Issues and Assessments Below-Knee Amputation Rehabilitation Questionnaires Clinical Assessment Tools Evaluation Human Test-Retest Reliability Multicenter Studies Repeated Measures Validation Studies Intraclass Correlation Coefficient Convenience Sample Quality of Life Self Report Scales Disability Evaluation Summated Rating Scaling Clinical Assessment Tools Funding Source ab: Background. Use of outcome measures to examine outcomes of amputation is complicated by a number of factors, including ease of administration and lack of scientific evidence to guide selection and interpretation. Objective. The purposes of this study were: (1) to estimate test-retest reliability of a modified version of the Prosthetic Evaluation Questionnaire (PEQ), scales of a version of the 36-Item Short-Form Health Survey questionnaire adapted for the veteran population (SF-36V), the Orthotics and Prosthetics Users' Survey (OPUS), the Patient-Specific Functional Scale (PSFS), the Two-Minute Walk Test, the Six-Minute Walk Test, the Timed "Up & Go" Test, and the Amputee Mobility Predictor; (2) to calculate minimal detectable change (MDC) of each measure; and (3) to conduct item analysis of the modified PEQ. Design. This was a multi-site study with repeated measurements. Methods. Forty-four patients with unilateral lower-limb amputation participated. Participants were tested twice within 1 week. We calculated test-retest reliability of each measure using intraclass correlation coefficient (ICC [2,1]), estimated standard error of the measurement and MDC, and assessed scale score distribution. Results. The study demonstrated strong test-retest reliability scores of performance measures (ICC.83-.97) suggesting that these measures are good choices for evaluation of people with lower-limb amputation. Reliability of PEQ subscales (ICC.41-.93) was comparable to that reported in the literature (ICC.56 -.90). Limitations. This study examined only statistically measurable differences and did not evaluate whether changes in scores were clinically important. Conclusions. Minimal detectable change scores can be used to determine whether change in test scores exceeds measurement error associated with day-to-day variation. This is the first study to present test-retest reliability data on the selfreported OPUS scales, the PSFS in people with lower-limb amputations, and a new, easier-to-use scoring mechanism for the PEQ. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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