Stacey George, Maria Crotty; Establishing Criterion Validity of the Useful Field of View Assessment and Stroke Drivers’ Screening Assessment: Comparison to the Result of On-Road Assessment. Am J Occup Ther 2010;64(1):114-122. doi: 10.5014/ajot.64.1.114.
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© 2015 American Occupational Therapy Association
OBJECTIVES. We sought to determine the criterion validity of the Useful Field of View (UFOV) assessment and Stroke Drivers’ Screening Assessment (SDSA) through comparison to the results of on-road assessment.
METHOD. This was a prospective study with people with stroke. Outcome measures used were UFOV, SDSA, and the results of on-road assessment.
RESULTS. Both the results on UFOV (Divided Attention subtest, p < .01; Selective Attention subtest, p < .05) and SDSA (p < .05) were significantly related to the recommendation from on-road assessment. The Divided Attention subtest of the UFOV had the highest sensitivity value (88.9%).
CONCLUSIONS. UFOV and SDSA are valid assessments of driving ability for stroke. The Divided Attention subtest of the UFOV can guide decision making of occupational therapists in stroke driver rehabilitation and in determining those who require further assessment on road because they pose a safety risk. Screening assists people with stroke to decide whether they are ready to have an on-road assessment.
Processing Speed (Subtest 1):
Normal category—Normal central vision and processing speed and normal central vision but somewhat slowed processing speed (scores >0 but ≤60 ms)
Difficulty category—Central vision loss or slowed processing speed/severe central vision loss or very slowed processing speed (scores of >60 but <500 ms)
Divided Attention (Subtest 2):
Normal category—Normal (scores of >0 but <100 ms)
Difficulty category—Some difficulty and severe difficulty (scores of ≥100 but <500 ms)
Selective Attention (Subtest 3):
Normal category—Normal ability (scores of >0 but <350 ms)
Difficulty category—Difficulty and severe difficulty (scores of ≥350 but <500 ms).
Overall Risk Category (as assigned by the UFOV software):
Low and Very Low, which was assigned a Pass outcome
Moderate, High, and Very High, which was assigned a Fail outcome.
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