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. 1998 Jul 25;317(7153):270–273. doi: 10.1136/bmj.317.7153.270

Table 1.

Use of heroin or cocaine and syringe sharing in Hindelbank prison, Switzerland. Values are numbers (percentages) of interviewed prisoners

Variable Time of interview after launch of the project (months)
0 (n=65) 3 (n=49) 6 (n=33) 12 (n=57)
Drug use 25 (38) 24 (49) 12 (36) 13 (23)
Intravenous drug use 19 (29) 18 (37) 11 (33)  9 (16)
Sharing syringe 8 (8)  5 (10) 2 (6) 1 (2)