Article

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.

Langue : ANGLAIS