From: The "Clubs against Drugs" program in Stockholm, Sweden: two cross-sectional surveys examining drug use among staff at licensed premises
Age (years)
2001
(%)
2007/08
Significancea
χ2 , P
< 25
40.7
29.2
5.37, 0.020
25-29
32.8
18.0
8.50, 0.004
30-39
12.9
10.3
0.43, 0.511
40+
2.1
6.6
1.24, 0.266
Total
26.7
18.9
9.12, 0.003