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Test-retest reliability and rater agreements of assessment of capacity for myoelectric control version 2.0
Örebro University, School of Health and Medical Sciences, Örebro University, Sweden. Centre for Rehabilitation Research, Örebro University Hospital, Örebro, Sweden.ORCID iD: 0000-0002-5567-9431
Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Stockholm, Sweden.
Örebro University, School of Health and Medical Sciences, Örebro University, Sweden. Örebro University Hospital. Department of Prosthetics and Orthotics, Örebro University Hospital, Örebro, Sweden.ORCID iD: 0000-0003-4247-2236
2014 (English)In: Journal of rehabilitation research and development, ISSN 0748-7711, E-ISSN 1938-1352, Vol. 51, no 4, p. 635-644Article in journal (Other academic) Published
Abstract [en]

The Assessment of Capacity for Myoelectric Control (ACMC) is an observation-based tool that evaluates ability to control a myoelectric prosthetic hand. Validity evidence led to ACMC version 2.0, but the test-retest reliability and minimal detectable change (MDC) of the ACMC have never been evaluated. Investigation of rater agreements in this version was also needed because it has new definitions in certain rating categories and items. Upper-limb prosthesis users (n = 25, 15 congenital, 10 acquired; mean age 27.5 yr) performed one standardized activity twice, 2 to 5 wk apart. Activity performances were video-recorded and assessed by two ACMC raters. Data were analyzed by weighted kappa, intraclass correlation coefficient (ICC), and Bland-Altman method. For test-retest reliability, weighted kappa agreements were fair to excellent (0.52 to 1.00), ICC2,1 was 0.94, and one user was located outside the limits of agreement in the Bland-Altman plot. MDC95 was less than or equal to 0.55 logits (1 rater) and 0.69 logits (2 raters). For interrater reliability, weighted kappa agreements were fair to excellent in both sessions (0.44 to 1.00), and ICC2,1 was 0.95 (test) and 0.92 (retest). Intrarater agreement (rater 1) was also excellent (ICC3,1 0.98). Evidence regarding the reliability of the ACMC is satisfactory and MDC95 can be used to indicate change.

Place, publisher, year, edition, pages
Rehibilitation Research & Development Service , 2014. Vol. 51, no 4, p. 635-644
Keywords [en]
ACMC, assessment, capacity, myoelectric con - trol, myoelectric prosthetic hand, prosthesis, prosthetic hand control, rater agreement, test-retest, upper limb
National Category
Nursing
Research subject
Nursing Science
Identifiers
URN: urn:nbn:se:oru:diva-32494DOI: 10.1682/JRRD.2013.09.0197ISI: 000340895400012PubMedID: 25144176Scopus ID: 2-s2.0-84905671717OAI: oai:DiVA.org:oru-32494DiVA, id: diva2:666220
Note

Funding Agency:

Health Care Sciences Postgraduate School, Karolinska Institute, Solna, Sweden

Available from: 2013-11-22 Created: 2013-11-22 Last updated: 2019-03-27Bibliographically approved
In thesis
1. The Assessment of Capacity for Myoelectric Control: Psychometric evidence and comparison with upper limb prosthetic outcome measures
Open this publication in new window or tab >>The Assessment of Capacity for Myoelectric Control: Psychometric evidence and comparison with upper limb prosthetic outcome measures
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Evaluation of outcomes using validated prosthetic outcome measures (OMs) is a current priority in upper limb (UL) prosthetics, and OMs with psychometric evidence toward UL prosthesis users are thus necessary. The “Assessment of Capacity for Myoelectric Control” (ACMC) is a tool that assesses the ability to control a myoelectric prosthetic hand. Some psychometric aspects of the ACMC have been previously investigated, but others are still lacking. A major part of this thesis was thus to search and assess the psychometric evidence of the ACMC. Data were collected from prosthesis users of different ages, prosthetic sides, and sexes. Rasch analysis was used to search for validity evidence and activity influence on the users’ ACMC ability measures, while reliability statistics was used to search for reliability evidence. Overall, the validity evidence was satisfactory in terms of unidimensionality, item technical quality, item difficulty, and relation to prosthetic wearing time. In terms of activity influence, the majority of prosthesis users received similar ability measures in different activities. Reliability evidence was also satisfactory in terms of test-retest reliability and rater agreements (intra- and interrater).

Besides the ACMC, several other prosthetic OMs have been developed in recent years. A comparison of these OMs would help professionals to select appropriate tools for clinical practice. Thus, a comparison of the validated UL prosthetic OMs was performed with an emphasis on what health aspects they cover. Eight OMs were chosen, and their contents were linked to the “International Classification of Functioning, Disability and Health” (ICF). The results showed that the contents from different OMs were linked to the ICF categories in “Body functions,” “Activity and Participation,” and “Environmental Factors.”

In conclusion, the use of a mixture of OMs is recommended to cover different aspects of health. Based on the evidence in this thesis, the ACMC can be recommended to measure the ability to control a myoelectric hand.

Place, publisher, year, edition, pages
Örebro: Örebro universitet, 2013. p. 85
Series
Örebro Studies in Care Sciences, ISSN 1652-1153 ; 48
Keywords
capacity, comparison, icf, myoelectric control, psychometric evidence, upper limb prosthesis
National Category
Nursing
Identifiers
urn:nbn:se:oru:diva-30071 (URN)978-91-7668-963-9 (ISBN)
Public defence
2013-10-18, Hörsal P2, Prismahuset, Örebro universitet, Fakultetsgatan 1, 701 82 Örebro, 13:00
Opponent
Supervisors
Available from: 2013-07-31 Created: 2013-07-30 Last updated: 2019-03-27Bibliographically approved

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Lindner, Helen Y. N.Langius-Eklöf, AnnHermansson, Liselotte M. N.

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Journal of rehabilitation research and development
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