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Journal Article

Citation

Kay LG, Bundy AC, Clemson LM. Arch. Phys. Med. Rehabil. 2009; 90(9): 1514-1522.

Affiliation

Discipline of Occupational Therapy, Faculty of Health Sciences, The University of Sydney, Australia.

Copyright

(Copyright © 2009, Elsevier Publishing)

DOI

10.1016/j.apmr.2009.03.011

PMID

19735779

Abstract

OBJECTIVES: To examine the psychometric properties of DriveSafe and DriveAware and their predictive validity. DESIGN: Prospective study compared screening tests with criterion standard. SETTING: Two driving rehabilitation centers affiliated with a university and a geriatric rehabilitation facility. PARTICIPANTS: Consecutive sample of drivers with functional impairments (n=115) and subgroup of drivers with cognitive impairments (n=96) referred for a driving assessment. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURE: Driving performance was measured by a standardized assessment in real traffic. RESULTS: Rasch analysis provided evidence for construct validity and internal reliability of both tests. Tests trichotomized drivers into unsafe, safe, and further testing categories. The optimal lower cutoff identified unsafe drivers with a specificity of 97% (95% confidence interval [CI], 83-100) in the test sample and 96% (95% CI, 80-100) in the validation sample. The optimal upper cutoff identified safe drivers with a sensitivity of 93% (95% CI, 77-99) and 95% (95% CI, 76-100), respectively. CONCLUSIONS: By using DriveSafe and DriveAware, drivers with cognitive impairments referred for a driving assessment can be categorized as unsafe, safe, or requiring further testing, with only 50% needing an on-road assessment. Before clinical practice is changed, these findings should be replicated.


Language: en

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