Roadside Survey On Drinking-driving In Changsha: Prevalence And Associated Factors

Objective: To estimate the prevalence and associated factors of drinking driving in Changsha, Hunan Province and to provide scientific basis for the primary and secondary prevention of drinking-driving.Methods: Multi-stage randomized sampling method was adopted. According to the road information provided by Road Traffic Management Department, the roads and survey locations were selected. During February 2008 to March 2009, in workdays, weekends and holidays, at 13:00-17:00 and 19:00-24:00, motor vehicle drivers of survey locations were randomly pulled over for breath alcohol test and questionnaire interview. The type model of breath alcohol test equipment was digital CA2000 and the questionnaire included vehicle type, seat belt or helmet using, driver gender, number of occupants, birth date of diver, type of drivers license, BAC(Blood Alcohol Concentration) reading, type of driver investigated, trip distant, number of times stopped by a police officer in the past two years, chances of being caught if drinking and driving, awareness of the lowest legal limit of drinking and driving in China, drinking habit, the history of drinking driven, the possible influence of a little drinking before driving.Results: A total of 10,436 drivers were stopped by police officers and 10,403 drivers were tested on the breath alcohol concentration and were interviewed; the response rate was 99.68%.Among the 10,403 drivers, the BAC of 386 drivers (3.71%, 95%CI=3.52%-3.90%)was above 0mg%, and the highest BAC was 280mg% with a median of 30mg%. Drink driving(20mg%≤BAC<80mg%) rate was 2.00% (95%CI: 1.73%-2.27%) and drunk driving(BAC>80mg%) rate was 0.74% (95%CI: 0.58%-0.90%) based on the legal limitation for drinking and driving in China.Univariate analysis showed that time period, road, driver gender, age, history of drinking-driving, trip distant, drinking habit, seat belt using, chances of being caught if drinking and driving, the possible influence of a little drinking before driving were associated with higher risk of drinking and driving. Multivariate analysis showed that associated factors included night(OR=0.204, 95%CI: 0.075-0.553), female(OR=0.204, 95%CI: 0.075-0.553), age 45-54(OR=2.660,95%CI: 1.457-4.857), using seat belt(OR=0.706, 95%CI: 0.533-0.936), occupants presented (OR=1.424, 95%CI: 1.137-1.785), having drinking habit(OR=4.134, 95%CI: 3.196-5.347), previous drinking driven (OR=2.766, 95%CI:2.155-3.550) and awareness of influence of a little drinking before driving (0.602,95%CI:0.465-0.778).Conclusion: The prevalence of drinking and driving in Changsha during 2008-2009 was 3.71%(95%CI: 3.35%-4.07%). Night, male driver, aged 45-54, unused seat belt, occupants presented, having drinking habit, previous drinking driven, unawareness of influence of a little drinking before driving are the factors associated with drinking and driving. These results indicate that the propaganda of the ban against drinking-driving should be strengthened and how to drive safe should be reeducated to improve awareness of safe driving among drivers.