Table 4

Multivariate analysis of involvement in traffic crashes and driving under the influence of alcohol, illicit or medicinal drugs

VariablesBSig.Exp (B)95% CI for Exp (B)
LowerUpper
Gender−0.7930.0000.50.30.7
Age−0.0360.0001.0*1.0*1.0*
Alcohol6.8840.000976.8450.82116.9
Amphetamine/methamphetamine†3.4430.00031.310.890.6
Clonazepam2.2080.0079.11.944.6
Tetrahydrocannabinol2.4630.00011.75.027.9
Zopiclone2.4940.00012.13.049.0
Benzodiazepines and similar substances‡2.5390.00012.76.126.2
  • *Numbers are rounded off from Exp (B)=0.964% and 95% CI for Exp (B): 0.953–0.975.

  • †Samples positive for amphetamine and/or methamphetamine.

  • ‡Benzodiazepines and similar substances: alprazolam, diazepam, etizolam, flunitrazepam, meprobamate, nitrazepam, nordiazepam, oxazepam, phenazepam, phenobarbital and zolpidem.