title: Freight transport and non-driving work duties as predictors of falling asleep at the wheel in urban areas of Crete.
abstract: BACKGROUND
  This study investigated the impact of subjective reports of drowsy driving and non-driving duties on the falling asleep responses and road crash involvement of professional drivers in Crete. An attempt was also made to elucidate other driving parameters, such as freight transportation, which could be potential predictors of risky driving, after controlling for lifestyle patterns.
  
  
  METHODS
  A sample of 317 professional drivers was studied through personal interviews. The interview questionnaire included items about sleep and fatigue as contributing factors to falling asleep probability and crash risk. In addition, the drivers reported the type of freight they carried in their last trip, as well as practices such as smoking and alcohol consumption.
  
  
  RESULTS
  The first logistic regression analysis showed that the most significant predictors of falling asleep at the wheel were transportation of fruits/vegetables and livestock, non-driving hours of work, insufficient hours of sleep, and smoking. The second logistic regression analysis revealed all the previous items as powerful factors of crash probability, including the transportation of express freight and freezer.
  
  
  CONCLUSIONS
  The findings of the current study are discussed as they pertain to directions for future studies and for the development of fatigue countermeasures.
authors.affiliation: Laboratory of Methodology Research in Health and Safety-Related Topics, Department of Social Work, Technological Educational Institute (TEI) of Crete, Educational Institute (TEI) of Crete, Estavromenos 71500 Heraklion, Greece.
authors.forename: Georgia
authors.initials: G
authors.lastname: Tzamalouka
authors.forename: Maria
authors.initials: M
authors.lastname: Papadakaki
authors.forename: Joannes
authors.initials: J
authors.lastname: El Chliaoutakis
mesh_terms: D000063:Accidents, Traffic; D000328:Adult; D001334:Automobile Driving; D005221:Fatigue / Q000503:physiopathology; D006115:Greece; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D016272:Occupational Health; D012890:Sleep; D011795:Surveys and Questionnaires; D014186:Transportation