Validity of the Stellenbosch University On-road Assessment

Authors

  • Lizette Swanepoel Stellenbosch University
  • Sherrilene Classen Western University, London, Ontario
  • Charlyn Delmarie Goliath Stellenbosch University

Abstract

Background
Internationally, occupational therapists are the professional group called upon to assess fitness to drive. Fitness to drive is assessed through a comprehensive driving evaluation consisting of a clinical battery of tests and an on-road assessment. The on-road assessment is the criterion standard for assessing fitness to drive. Such an assessment has not yet been developed or validated in the South African context.
Purpose
This study empirically quantified the face, content and construct validity of the Stellenbosch University on-road assessment.
Methods
Firstly face validity was established using feedback from peer reviewers, secondly, content validity using the ratings of expert reviewers, and thirdly construct validity was established by assessing between group differences in young drivers who drove the road-course.
Results
Peer review indicated acceptable face validity. Expert reviewers had an average rater agreement percentage of 94%, indicating favourable content validity. One (of two) on-road outcome measures, the Global Rating Score, discriminated between two groups of drivers, indicating construct validity.
Conclusion
This study introduced the first empirical on-road assessment in the South African context. The findings provided foundational information for occupational therapists interested in assessing in-traffic fitness to drive abilities. Implications for practice, research and policy were discussed.

Key words
Fitness to drive, Measurement, South Africa

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Author Biographies

  • Lizette Swanepoel, Stellenbosch University

    Qualifications: B Radiography (UP), B OT (UP)

    Position: Occupational Therapy Manager, USeBenzA Assessment Centre, Division of Occupational Therapy, Stellenbosch University

  • Sherrilene Classen, Western University, London, Ontario

    Qualifications: BA Occupational Therapy (University of the Orange Free State), PhD Occupational Therapy (Nova Southeastern University), MPH Epidemiology (University of Florida), Post-Doctoral Fellow Public Health / Rehabilitation Sciences (University of Florida)


    Position: Professor/Director, School of Occupational Therapy, Faculty of Health Sciences, Western University, London, Ontario, Canada; Extraordinary Professor, Stellenbosch University, South Africa; Adjunct Professor, Department of Occupational Therapy, University of Florida, USA

  • Charlyn Delmarie Goliath, Stellenbosch University

    Qualifications: B Occupational Therapy (Stellenbosch University), M Occupational Therapy (Stellenbosch University)
    Position: Deputy Director: Professional Support, Western Cape Department of Health; Lecturer, Centre for Health System and Services Research and Development, Division of Community Health, Stellenbosch University

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Published

22-12-2015

Issue

Vol. 45 No. 3 (2015): The South African Journal of Occupational Therapy

Section

Research Articles

How to Cite

Validity of the Stellenbosch University On-road Assessment. (2015). South African Journal of Occupational Therapy, 45(3), 9-15. https://journals.assaf.org.za/index.php/sajot/article/view/19634
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