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CIHR Candrive Cohort Comparison with Canadian Household Population Holding Valid Driver’s Licenses

Published online by Cambridge University Press:  03 June 2016

Sylvain Gagnon ,
Shawn Marshall ,
Yara Kadulina ,
Arne Stinchcombe ,
Michel Bédard ,
Isabelle Gélinas ,
Malcolm Man-Son-Hing ,
Barbara Mazer ,
Gary Naglie  and
Michelle M. Porter
...Show all authors
Sylvain Gagnon*
Affiliation:
School of Psychology, University of Ottawa
Shawn Marshall
Affiliation:
Ottawa Hospital Research Institute, University of Ottawa
Yara Kadulina
Affiliation:
School of Psychology, University of Ottawa
Arne Stinchcombe
Affiliation:
School of Psychology, University of Ottawa
Michel Bédard
Affiliation:
Centre for Research on Safe Driving, Lakehead University
Isabelle Gélinas
Affiliation:
School of Physical & Occupational Therapy, McGill University
Malcolm Man-Son-Hing
Affiliation:
Ottawa Hospital Research Institute, University of Ottawa
Barbara Mazer
Affiliation:
School of Physical & Occupational Therapy, McGill University
Gary Naglie
Affiliation:
Research Department, Toronto Rehabilitation Institute University Health Network Department of Medicine and Rotman Research Institute, Baycrest Geriatric Health Care Centre Department of Medicine and Institute of Health Policy, Management and Evaluation, University of Toronto
Michelle M. Porter
Affiliation:
Faculty of Kinesiology and Recreation Management, University of Manitoba
Mark Rapoport
Affiliation:
Department of Psychiatry, University of Toronto
Holly Tuokko
Affiliation:
Centre on Aging, University of Victoria
Brenda Vrkljan
Affiliation:
School of Rehabilitation Science, McMaster University
*
†La correspondance et les demandes de tirés-à-part doivent être adressées à: / Correspondence and requests for offprints should be sent to: Sylvain Gagnon, Ph.D. School of Psychology, University of Ottawa Cognitive Aging and Driving Laboratory 136 Jean Jacques Lussier Vanier Hall (3042) Ottawa, ON K1N 6N5 (sgagnon@uottawa.ca)
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Abstract

We investigated whether convenience sampling is a suitable method to generate a sample of older drivers representative of the older-Canadian driver population. Using equivalence testing, we compared a large convenience sample of older drivers (Candrive II prospective cohort study) to a similarly aged population of older Canadian drivers. The Candrive sample consists of 928 community-dwelling older drivers from seven metropolitan areas of Canada. The population data was obtained from the Canadian Community Health Survey – Healthy Aging (CCHS-HA), which is a representative sample of older Canadians. The data for drivers aged 70 and older were extracted from the CCHS-HA database, for a total of 3,899 older Canadian drivers. Two samples were demonstrated as equivalent on socio-demographic, health, and driving variables that we compared, but not on driving frequency. We conclude that convenience sampling used in the Candrive study created a fairly representative sample of Canadian older drivers, with a few exceptions.

Résumé

Nous avons examiné si l’échantillonnage de commodité est une méthode appropriée pour recruter un échantillon de conducteurs âgés représentatif de la population des conducteurs canadiens âgés. En utilisant des tests d’équivalence, nous avons comparé un grand échantillon de commodité de conducteurs âgés (de la cohorte Candrive II) à une population de conducteurs canadiens d’âges similaires. L’échantillon Candrive est constitué de 928 conducteurs âgés habitant dans l’une de sept régions métropolitaines du Canada. Les données démographiques relatives à la population canadienne ont été obtenues à partir de l’Enquête sur la santé dans les collectivités canadiennes – Vieillissement en santé (ESCC-VS), basé sur un échantillon représentatif de Canadiens âgés. Les données pour les conducteurs âgés de 70 ans et plus ont été extraites de la base de données de l’ESCC-VS, pour un total de 3,899 conducteurs canadiens âgés. Les deux échantillons que nous avons comparés se sont avérés équivalents en ce qui a trait aux variables socio-démographiques, relatives à la santé et à la conduite à l’exception de la fréquence d’utilisation de la voiture. Nous concluons qu’en dépit de quelques différences, l’échantillonnage de commodité utilisé dans l’étude Candrive a créé un échantillon suffisamment représentatif des conducteurs âgés au Canada.

Keywords

vieillissmentéchantillonage de commoditétest d’équivalenceconducteurs âgésvaliditéagingconvenience sampleequivalence testingolder driversvalidity
Type
Articles
Information
Canadian Journal on Aging / La Revue canadienne du vieillissement , Volume 35 , Special Issue S1: Older Driver Research: Evidence to Guide Change / Recherche sur la conduite automobile des personnes âgées : des preuves afin de guider le changement , June 2016 , pp. 99 - 109
Copyright
Copyright © Canadian Association on Gerontology 2016 

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