|  | Baseline | Post | Five month follow-up | 10 month follow-up |
---|---|---|---|---|---|
Frequency of cannabis use in last three months a | Control | 0.24 | 0.25 | 0.27 | 0.29 |
(0.18-0.30) | (0.17-0.33) | (0.19-0.35) | (0.19-0.39) | ||
(n = 823) | (n = 579) | (n = 447) | (n = 403) | ||
Intervention | 0.12 | 0.15 | 0.22 | 0.16 | |
(0.08-0.16) | (0.09-0.21) | (0.14-0.30) | (0.10-0.22) | ||
(n = 898) | (n = 626) | (n = 614) | (n = 568) | ||
Frequency of meth/amphetamine use in last 12Â months b | Control | 0.12 | 0.13 | 0.09 | 0.10 |
(0.04-0.12) | (0.02-0.10) | (0.07-0.15) | (0.07-0.15) | ||
(n = 824) | (n = 578) | (n = 449) | (n = 403) | ||
Intervention | 0.08 | 0.06 | 0.11 | 0.09 | |
(0.04-0.12) | (0.02-0.10) | (0.07-0.15) | (0.05-0.13) | ||
(n = 904) | (n = 628) | (n = 614) | (n = 569) | ||
Frequency of ecstasy use in last 12Â months b | Control | 0.15 | 0.18 | 0.16 | 0.12 |
(0.11-0.19) | (0.12-0.24) | (0.10-0.22) | (0.10-0.22) | ||
(n = 824) | (n = 578) | (n = 447) | (n = 403) | ||
Intervention | 0.10 | 0.10 | 0.12 | 0.11 | |
(0.06-0.14) | (0.06-0.14) | (0.08-0.16) | (0.07-0.15) | ||
(n = 904) | (n = 628) | (n = 614) | (n = 569) |