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Dement Geriatr Cogn Disord. 2010;29(2):154-63. doi: 10.1159/000264631. Epub 2010 Feb 11.

The Wechsler Digit Symbol Substitution Test as the best indicator of the risk of impaired driving in Alzheimer disease and normal aging.

Author information

1
UMR T9405 (INRETS/Université de Lyon - Lyon 1/Institut de Veille Sanitaire), Bron, France. sylviane.lafont@inrets.fr

Abstract

AIMS:

Our purpose was to identify cognitive tools associated with unsafe driving among elderly drivers of varying cognitive levels.

METHODS:

Twenty drivers with early-stage dementia of the Alzheimer type and 56 nondemented drivers aged 65-85 were recruited. Various cognitive processes were measured and unsafe driving was evaluated during an in-traffic road test with 3 different indicators and a composite indicator.

RESULTS:

The Wechsler Digit Symbol Substitution Test score was the best cognitive measure to detect unsafe drivers using the composite driving indicator.

CONCLUSION:

The Digit Symbol Substitution Test may be used by physicians for the evaluation and follow-up of older patients, with or without Alzheimer-type dementia, as a screening tool of unsafe driving.

PMID:
20150734
DOI:
10.1159/000264631
[Indexed for MEDLINE]

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