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Predicting driving ability using DriveSafe and DriveAware in people with cognitive impairments: A replication study
Author(s) -
Hines Ashleigh,
Bundy Anita C.
Publication year - 2014
Publication title -
australian occupational therapy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.595
H-Index - 44
eISSN - 1440-1630
pISSN - 0045-0766
DOI - 10.1111/1440-1630.12112
Subject(s) - replication (statistics) , cohort , cohort study , population , sample (material) , cognition , sensitivity (control systems) , psychology , medicine , physical medicine and rehabilitation , clinical psychology , engineering , psychiatry , environmental health , pathology , chemistry , chromatography , electronic engineering , virology
Background/aim Previously developed cut‐off scores for off‐road assessments, DriveSafe and DriveAware, were applied to data from a new sample. Our aim was to determine whether results from previous research are replicable in a different population, to further investigate the psychometric properties of the tools. Methods Using a retrospective cohort design, we analysed data from DriveSafe and DriveAware gathered in three driving centres in Sydney ( N = 90). We calculated sensitivity and specificity of DriveSafe and DriveAware data for predicting results of on‐road testing. Results Sensitivity and specificity for this study were very similar to those documented previously. The lower cut‐off produced specificity of 96%, identical to previous calculations. The upper cut‐off score yielded sensitivity of 91% compared with 93% previously. When scores from DriveSafe and DriveAware were trichotomised (i.e. ‘pass,’ ‘fail,’ and ‘requires on‐road testing’), they predicted on‐road performance of about half of drivers with ≥ 90% accuracy. Conclusion Findings will add to the body of evidence suggesting that not all drivers referred to occupational therapy driving assessors require expensive, time‐consuming and potentially high risk on‐road assessments.