| Treatment years included | Number of patients (mean) | Age (mean) | Age at first regular heroin use (mean) | Proportion with known onset (mean) |
---|---|---|---|---|---|
Zurich | 1998–2006 | 3,701 | 35.4 | 21.5 | 76% |
Bern | 1999–2005 | 2,650 | 34.8 | 20.9 | 50% |
Genève | 1999–2006 | 1,581 | 37.3 | 20.1 | 16% |
Vaud | 2001–2006 | 1,684 | 36.0 | 20.8 | 36% |
Ticino | 1998–2006 | 987 | 35.5 | 20.8 | 90% |
St. Gallen | 2001–2007 | 910 | 35.2 | 22.9 | 31% |
Neuchâtel | 2000–2006 | 689 | 36.1 | 21.1 | 32% |
Fribourg | 1999–2005 | 496 | 33.4 | 20.2 | 51% |
Graubünden | 1998–2006 | 267 | 34.3 | 19.7 | 6% |
Schaffhausen | 2000–2006 | 140 | 33.9 | 19.2 | 28% |
Zug | 2006 | 79 | 36.2 | 20.8 | 72% |