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
None / Did not drink in past 30 days 4450 97.1 0.3 96.4 97.7
One 68 1.6 0.2 1.1 2.0
Two 29 0.8 0.2 0.4 1.2
Three or more 20 0.5 0.2 0.2 0.8

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