Table 6. Estimates of drivers who drank at AO and prevalence of DUI in Porto Alegre, 2009, by sex and by age groups.

Sex and age groups	Number of drivers who drank at an AO (in thousands)		Prevalence of DUI
	Drivers	SE	%	SE
All	151.6	22.3	56.3	3.5
Sex
Men	115.2	19.9	62.4	3.8
Women	36.3	6.6	37.0	6.1
Age
18–29y	48.6	13.1	58.7	6.1
30–44y	58.4	11.8	51.6	4.7
45y or +	44.5	8.8	59.9	7.0

SE is the standard error.