Faculty of Kinesiology and Recreation Management Scholarly Works
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Browsing Faculty of Kinesiology and Recreation Management Scholarly Works by Author "Bedard, M."
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- ItemOpen AccessOlder driver estimates of driving exposure compared to in-vehicle data in the Candrive II study(Taylor and Francis, 2015-01) Porter, Michelle M.; Smith, G.A.; Cull, A.W.; Myers, A.M.; Bedard, M.; Gelinas, I.; Mazer, B.; Marshall, S.C.; Naglie, G.; Rapoport, M.J.; Tuokko, H.A.; Vrkljan, B.H.OBJECTIVE: Most studies on older adults' driving practices have relied on self-reported information. With technological advances it is now possible to objectively measure the everyday driving of older adults in their own vehicles over time. The purpose of this study was to examine the ability of older drivers to accurately estimate their kilometers driven over one year relative to objectively measured driving exposure. METHODS: A subsample (n = 159 of 928; 50.9% male) of Candrive II participants (age >/= 70 years of age) was used in these analyses based on strict criteria for data collected from questionnaires as well as an OttoView-CD Autonomous Data Logging Device installed in their vehicle, over the first year of the prospective cohort study. RESULTS: Although there was no significant difference overall between the self-reported and objectively measured distance categories, only moderate agreement was found (weighted kappa = 0.57; 95% confidence interval, 0.47-0.67). Almost half (45.3%) chose the wrong distance category, and some people misestimated their distance driven by up to 20,000 km. Those who misjudged in the low mileage group (/= 20,000); that is, they always overestimated their driving distance. CONCLUSIONS: Although self-reported driving distance categories may be adequate for studies entailing broad group comparisons, caution should be used in interpreting results. Use of self-reported estimates for individual assessments should be discouraged.
- ItemOpen AccessSpeeding and Speed Modification of Older Drivers: Does Vehicle Type Make a Difference?(2020-09) Cull, A.W.; Porter, M.M.; Nakagawa, S.; Smith, G.A.; Rapoport, M.J.; Marshall, S.C.; Bedard, M.; Tuokko, H.; Vrkljan, B.; Naglie, G.; Myers, A.M.; Mazer, B.The purpose of this study was to examine whether vehicle type based on size (car vs. other = truck/van/SUV) had an impact on the speeding, acceleration, and braking patterns of older male and female drivers (70 years and older) from a Canadian longitudinal study. The primary hypothesis was that older adults driving larger vehicles (e.g., trucks, SUVs, or vans) would be more likely to speed than those driving cars. Participants (n = 493) had a device installed in their vehicles that recorded their everyday driving. The findings suggest that the type of vehicle driven had little or no impact on per cent of time speeding or on the braking and accelerating patterns of older drivers. Given that the propensity for exceeding the speed limit was high among these older drivers, regardless of vehicle type, future research should examine what effect this behaviour has on older-driver road safety.