Table 1

Demographics of study subjects
Demographics Mean (±SD) Median
Age of drivers (years) 40(±10.0) 39.0
Daily driving time (hours) 2.2(±1.9) 2.0
Number of intercity trips per week 3.9(±2.3) 3.5
Age of car (years) 4.0(±1.7) 4.0

SD: Standard Deviation.

Khorasani-Zavareh et al.

Khorasani-Zavareh et al. BMC Public Health 2013 13:439   doi:10.1186/1471-2458-13-439

Open Data