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 Lower 95% Confidence
Limit
Upper 95% Confidence
Limit
Limit
None / Did not drink in past 30 days 3544 93.8 0.6 92.6 95.0
One 105 3.3 0.4 2.5 4.0
Two 48 1.6 0.4 0.9 2.3
Three or more 25 1.3 0.3 0.7 2.0

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