[article] 
inAmerican Journal of Occupational Therapy > Vol. 66/2 (mars-avril 2012) . - p. 233-241

Titre :	Psychometrics of the self-report safe driving behavior measure for older adults
Type de document :	texte imprimé
Auteurs :	Sherrilene Classen ; et al. ; Craig A. VELOZO ; Pey-Shan WEN
Année de publication :	2012
Article en page(s) :	p. 233-241
Langues :	Anglais (eng)
Mots-clés :	Psychométrie  Personne âgée  Conduite automobile  Autoévaluation  Sécurité
Résumé :	We investigated the psychometric properties of the 68-item Safe Driving Behavior Measure (SDBM) with 80 older drivers, 80 caregivers, and 2 evaluators from two sites. Using Rasch analysis, we examined unidimensionality and local dependence; rating scale; item- and person-level psychometrics; and item hierarchy of older drivers, caregivers, and driving evaluators who had completed the SDBM. The evidence suggested the SDBM is unidimensional, but pairs of items showed local dependency. Across the three rater groups, the data showed good person (≥3.4) and item (≥3.6) separation as well as good person (≥.93) and item reliability (≥.92). Cronbach’s α was ≥.96, and few items were misfitting. Some of the items did not follow the hypothesized order of item difficulty. The SDBM classified the older drivers into six ability levels, but to fully calibrate the instrument it must be refined in terms of its items (e.g., item exclusion) and then tested among participants of lesser ability.
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[article] Psychometrics of the self-report safe driving behavior measure for older adults [texte imprimé] / Sherrilene Classen ; et al. ; Craig A. VELOZO ; Pey-Shan WEN . - 2012 . - p. 233-241.
Langues : Anglais (eng)
in American Journal of Occupational Therapy > Vol. 66/2 (mars-avril 2012) . - p. 233-241

Mots-clés :	Psychométrie  Personne âgée  Conduite automobile  Autoévaluation  Sécurité
Résumé :	We investigated the psychometric properties of the 68-item Safe Driving Behavior Measure (SDBM) with 80 older drivers, 80 caregivers, and 2 evaluators from two sites. Using Rasch analysis, we examined unidimensionality and local dependence; rating scale; item- and person-level psychometrics; and item hierarchy of older drivers, caregivers, and driving evaluators who had completed the SDBM. The evidence suggested the SDBM is unidimensional, but pairs of items showed local dependency. Across the three rater groups, the data showed good person (≥3.4) and item (≥3.6) separation as well as good person (≥.93) and item reliability (≥.92). Cronbach’s α was ≥.96, and few items were misfitting. Some of the items did not follow the hypothesized order of item difficulty. The SDBM classified the older drivers into six ability levels, but to fully calibrate the instrument it must be refined in terms of its items (e.g., item exclusion) and then tested among participants of lesser ability.
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