Table 5.
Lifetime Driving History – Categorical Variables
| Parameter | Chi Squ | Df | O.R. | C.I. | P* |
| Driving Problems | |||||
| Drive | 5.99 | 1 | 0.41 | 0.18–0.89 | 0.0144 |
| Lost Licence | 63.83 | 1 | 7.70 | 4.38–13.63 | <0.0001 |
| Disqualified | 55.36 | 1 | 6.99 | 3.92–12.55 | <0.0001 |
| Motor Bike Accident | 12.41 | 1 | 3.00 | 1.54–5.94 | 0.0004 |
| Motor Vehicle Accident | 4.47 | 1 | 1.66 | 1.01–2.74 | 0.0346 |
| Your Car Hit | 2.62 | 1 | 0.70 | 0.44–1.10 | 0.1053 |
| Hit Other Cars | 19.90 | 1 | 3.09 | 1.81–5.30 | <0.0001 |
| Drunk Driving | 9.89 | 1 | 7.55 | 1.81–66.90 | 0.0016 |
| Drugged Driving | 26.42 | 1 | 31.70 | 5.22–1290.43 | <0.0001 |
| Benzo Affected Driving | 12.41 | 1 | 6.76 | 2.03–35.18 | 0.0008 |
| Remember Accident | 2.50 | 1 | 1.44 | 0.89–2.32 | 0.1142 |
| Struck from behind | 2.80 | 1 | 1.49 | 0.91–2.44 | 0.9430 |
| Been Rear ended | 2.80 | 1 | 1.49 | 0.91–2.44 | 0.9430 |
| Hit a car from behind | 6.49 | 1 | 1.90 | 1.13–3.25 | 0.0108 |
| Rear ended Anyone | 6.49 | 1 | 1.90 | 1.13–3.25 | 0.0108 |
| Taken to Hospital | 5.06 | 1 | 1.95 | 1.05–3.66 | 0.0244 |
| Others to Hospital | 2.09 | 1 | 2.00 | 0.93–4.37 | 0.0368 |
| Anybody Killed# | 5.03 | 1 | - | - | 0.0249 |
| Run Away from Crash† | 21.92 | 1 | 26.37 | 4.31–1077.48 | <0.0001 |
* – Chi Squared test, df = 1.
# – Listed result is for Chi Squared. Fisher Exact Test (two tails) result, P = 0.0293.
† – Odds ratio adjusted by the insertion of unity into the numerator of the N-SUD group to allow calculation to be performed.
£ – P value from Fisher Exact test.