During the past 30 days, how many times have you driven
when you've had perhaps too much to drink?

Response Unweighted Frequency Weighted Percentage Standard Error 95% Confidence Limit
Lower Upper
None 5348 95.9 0.4 95.1 96.6
One 102 2.5 0.3 1.9 3.0
Two 35 0.9 0.2 0.5 1.4
Three or more 27 0.7 0.2 0.4 1.1

Among all respondents, excluding unknowns and refusals.
Denominator adjusted to reflect overall prevalence in the population.