Demographic characteristics, drinking patterns and drink-driving behavior of injured male drivers and motorcycle riders.
OBJECTIVE
The demographic characteristics, usual drinking and drink-driving patterns, incidence of problem drinking, precrash drinking behavior and attitudes towards drink-driving of crash-involved male drivers and riders are described and related to blood alcohol concentration (BAC) on admission to hospital. A better understanding of these issues will enable drink-driving countermeasures to target more specifically those individuals who are most at risk of being killed or injured in alcohol-related road crashes.


METHODS
Between June 1985 and April 1987 interviews were conducted with a sample of 302 male drivers and motorcycle riders admitted to the Royal Adelaide Hospital in Adelaide, South Australia.


RESULTS
With one exception, the likelihood of having a high BAC (i.e., 80 mg/dl or above) did not differ with demographic profile. As BAC increased, there was a significant increase in: various indices of quantity and frequency of drinking; beer being the preferred beverage; percentages drinking alone, in a hotel, in a vehicle and for various less socially acceptable reasons; frequency of drink-driving; likelihood of previous drink-driving suspension; and, more liberal attitudes towards drink-driving. About 25% of those with a BAC of at least 150 mg/dl were probably experiencing alcohol-related problems prior to the crash, compared with only a very small proportion of those with lower BACs. Precrash drinking most commonly involved drinking in a hotel, drinking with friends and drinking beer, with no significant differences between BAC groups.


CONCLUSIONS
The results suggest that usual drinking and drink-driving patterns, as well as attitudes to drink-driving, become more extreme as the BAC of male crash-involved drivers and riders increases.
D000063:Accidents, Traffic / Q000706:statistics & numerical data*; D000328:Adult; D000368:Aged; D000428:Alcohol Drinking / Q000009:adverse effects / Q000453:epidemiology*; D000435:Alcoholic Intoxication / Q000453:epidemiology* / Q000523:psychology; D003430:Cross-Sectional Studies; D000431:Ethanol / Q000493:pharmacokinetics; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D009049:Motorcycles / Q000706:statistics & numerical data*; D009104:Multiple Trauma / Q000453:epidemiology*; D010343:Patient Admission / Q000706:statistics & numerical data; D012931:Social Environment; D013021:South Australia / Q000453:epidemiology
D000431:Ethanol