Validity and critical driving errors of on-road assessment for older drivers.
OBJECTIVE
We examined the validity of our on-road driving assessment to quantify its outcomes.


METHODS
Older drivers (N = 127) completed a driving assessment on a standardized road course. Measurements included demographics, driving errors, and driving test outcomes; a categorical global rating score (pass-fail); and the sum of maneuvers (SMS) score (0-273).


RESULTS
There were significant differences in the SMS (F = 29.9, df = 1, p < or = .001) between drivers who passed the driving test and those who failed. The SMS cutoff value of 230 points was established as the criterion because it yielded the most optimal combination of sensitivity (0.91) and specificity (0.87). The strongest predictors of failure were adjustment to stimuli and lane maintenance errors.


CONCLUSIONS
The SMS differentiated between passing and failing drivers and can be used to inform clinical decision making.
Shechtman
Orit
O
Department of Occupational Therapy, College of Public Health and Health Professions, Institute for Mobility, Activity and Participation, National Older Driver Research and Training Center, University of Florida, PO Box 100164, University of Florida, Gainesville, FL 32610, USA. oshechtm@phhp.ufl.edu
Awadzi
Kezia D
KD
Classen
Sherrilene
S
Lanford
Desiree N
DN
Joo
Yongsung
Y
D000368:Aged; D001333:Automobile Driver Examination; D001334:Automobile Driving; D003663:Decision Trees; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D012372:ROC Curve; D012680:Sensitivity and Specificity; D012926:Social Control, Formal; D013647:Task Performance and Analysis