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. 2019 Sep 2;116(35-36):585–591. doi: 10.3238/arztebl.2019.0585

eTable 10. Sample size, prevalence, estimated prevalence with 95% confidence intervals for use of at least one illegal drug by survey year and sex.

Men Women
Survey year N Prevalence Est. prev. 95% CI N Prevalence Est. prev. 95% CI
1995 3550 2,9 2,1 [1.7; 2.5] 4276 0,8 0,6 [0.4; 0.7]
1997 3727 2,2 2,2 [1.9; 2.5] 4293 0,8 0,7 [0.5; 0.8]
2000 3657 2 2,2 [2.0; 2.5] 4428 1 0,8 [0.6; 0.9]
2003 3583 3 2,3 [2.1; 2.5] 4421 1 0,9 [0.8; 1.0]
2006 3041 2 2,4 [2.2; 2.6] 3858 0,7 1 [0.9; 1.1]
2009 3203 2 2,5 [2.3; 2.7] 4049 0,8 1,1 [1.0; 1.3]
2012 3414 1,9 2,6 [2.3; 2.9] 4534 0,8 1,3 [1.1; 1.4]
2015 3692 2,2 2,7 [2.3; 3.0] 4540 1,1 1,5 [1.2; 1.7]
2018 3734 3,1 2,8 [2.3; 3.2] 4572 2 1,6 [1.3; 2.0]

N. Sample size; Est. prev.. mean estimated prevalence; 95% CI. 95% confidence interval