Browsing by Author "Van der Vlugt, Kirsti"

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    The content validity of the Community Mobility Assessment Tool for Individuals (CoMATI) in the context of the Cape Town Metropole
    (Stellenbosch : Stellenbosch University, 2019-04) Van der Vlugt, Kirsti; Swanepoel, Lizette; Jacobs-Nzuzi Khuabi, Lee-Ann; Stellenbosch University. Faculty of Medicine and Health Sciences. Dept. of Health & Rehabilitation Sciences. Occupational Therapy.
    ENGLISH SUMMARY : Introduction: The Community Mobility Assessment Tool for Individuals (CoMATI) is an occupational therapy assessment tool that evaluates an individual’s ability to use public transport in the Cape Town metropole. The content of the CoMATI consists of an Interview Report Format and four assessment protocols for persons who ambulate, persons who use a wheeled device, persons with cognitive impairment and persons with visual impairment. As the psychometric properties of the CoMATI are not known, the purpose of the study was to establish the content validity of the CoMATI. Methodology: A quantitative methodological approach was used. A panel of occupational therapists (N=5), considered to be subject matter experts (SMEs), were recruited on the basis of peer acknowledgement. The SMEs used a Content Validity Rating Scale to rate each item on the Interview Report Format and the four assessment protocols as Essential; Useful but not essential or Not necessary for evaluating performance of public transport use. Additional space was provided for feedback. A content validity ratio (CVR) was calculated for each item using the method described by Lawshe (1). To compensate for chance agreement, the researcher regarded a CVRcritical= 0,573 to be the lowest level of CVR to indicate that the item may be considered relevant. A content validity index (CVI) was calculated in order to evaluate the degree to which the content in the Interview Report Format and each assessment protocol was representative of the domain of public transport. The CVI was calculated as the average agreement among SMEs. For a new instrument such as the CoMATI, the researcher was seeking 80% or better agreement. Results: The Content Validity Rating Forms were completed by all SMEs and no items were omitted. There was total agreement from SMEs regarding the relevance of certain items. For those items where full agreement on relevance was not achieved, the items were considered to be useful but not essential by only one of the five SMEs. Conclusion: The results of the study determined that all items in the CoMATI had a high degree of content validity and may be considered to be relevant and representative to the domain of public transport use. Three reasons that certain items were considered less relevant than others may be that items may either not have been adequately performance based, may not have had the same degree of influence in excluding an individual from public transport use, or may not have been relevant to certain individuals. Occupational therapists using the present version of the CoMATI may have to rely on clinical reasoning to determine which of the available items are more relevant for an individual’s performance of public transport use.