Accounting for Time-Dependent Covariates in Driving Simulator Studies

Details

• Personal Author:
  Boyle L ; Donmez B ; Lee JD
• Description:
  Driving involves multiple cognitive processes that are influenced by a dynamic external environment and internal feedback loops. These processes are typically studied in a simulator environment to capture time-dependent driver performance measures. The primary objective of this research is to show that data analysis techniques that ignore or improperly treat time-dependent covariates will lead to erroneous estimates and conclusions. This is demonstrated with a driving simulator study that was used to test whether a significant decrease in performance occurs in the presence of auditory and visual distractions. A total of 28 drivers participated in a 2 (age) × 7 (strategy) repeated measures experiment. The response variable-accelerator release time-was analysed with and without consideration of time-dependent covariates. Using the inverse headway distance as a time-dependent covariate corrected logically inconsistent results obtained when the covariate was ignored. This indicates that ignoring covariates can actually lead to inappropriate design or policy implications. [Description provided by NIOSH]
• Subjects:
  Automobiles Environment Eye Nervous System Occupational Health Safety Sense Organs
• Keywords:
  Acceleration Accelerator Release Audio Visual Communication Author Keywords: Driving Simulator Cognitive Function Computerized Simulation Data Analysis Data Processing Drivers Environmental Factors Eye Movement Eyesight Headway Distance Humans Motor Vehicles Performance Tests Simulation Methods Task Performance Time-dependent Covariates

  More +
• ISSN:
  1463-922X
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Iowa ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  189-199
• Volume:
  9
• Issue:
  3
• NIOSHTIC Number:
  nn:20063273
• Citation:
  Theor Issues Ergon Sci 2008 May-Jun; 9(3):189-199
• Contact Point Address:
  Linda Ng Boyle, Department of Mechanical and Industrial Engineering, University of Iowa, 3131 Seamans Center, Iowa City, IA 52242, USA
• Email:
  linda-boyle@uiowa.edu
• Federal Fiscal Year:
  2008
• Performing Organization:
  University of Iowa
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Theoretical Issues in Ergonomics Science
• End Date:
  20290630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:81ec1a37ce5f83992a0a129b394cec4ddccf5425da67f853218c1852fa278fc84d18640db4378d4b4ab2fbc4c356e5c1ca8f78d70a70a515cb01d59bb4e5b75c
• Download URL:
  https://stacks.cdc.gov/view/cdc/226365/cdc_226365_DS1.pdf
• File Type:
  [PDF - 336.86 KB ]