Table 1

Sample demographics and risk factor percentages by socioeconomic status

CharacteristicValueTotal (N=20 822)Socioeconomic status
HighModerateLow
(n=6970)(n=6895)(n=6957)
SexMale45.446.645.644.0
Age (years)1748.744.551.050.6
18–1937.239.436.236.0
20–2414.116.112.813.4
Rurality of residenceUrban74.395.365.162.4
Regional21.14.732.126.8
Rural4.50.02.810.8
Risk-driving behaviourLow34.734.035.035.0
Moderate32.732.732.632.7
High32.733.332.432.3
Sensation-seeking behaviourLow31.932.031.532.1
Moderate32.533.032.931.7
High35.635.035.736.2
Alcohol dependencyHigh13.212.914.312.5
Sleep hours per dayLess than 718.718.618.119.5
730.533.029.828.6
831.931.232.831.7
9+18.917.319.420.2
Driving hours per week0–219.624.217.617.0
3–518.620.418.217.0
6–929.528.530.029.8
10+32.426.934.236.2
Times driven before Learner licence044.046.542.443.0
1–526.029.324.923.7
6+30.024.232.733.3
Time on Learner licence (years)Less than 138.336.339.339.3
1–1.435.835.535.836.1
1.5+25.928.224.924.7
Professional supervised driving hours on Learner licence017.914.117.721.8
1–429.025.831.529.8
5–821.222.621.619.2
9+31.937.529.229.1
Non-professional supervised driving hours on Learner licenceLess than 4020.221.518.021.1
40–4914.816.714.013.5
50–5925.926.326.324.9
60–6915.715.016.715.4
70+23.520.425.025.1