Table 2 Prevalence of drug positivity by sex in drivers under and over the limit for alcohol, and weighted estimate for the population of all stopped Irish drivers.

Sex	Under limit (n = 1000), n drug positive (%; 95% CI)	Over limit (n = 1000), n drug positive (%; 95% CI)	Weighted analysis (population estimate for all tested Irish drivers) (%)
Male	305/903 (33.8; 30.7 to 36.9)	133/931 (14.3; 12.1 to 16.7)	15.8
Female	26/97 (26.8; 18.6 to 36.9)	9/69 (13.0; 6.5 to 23.8)	14.5