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Table 1 Characteristics of respondents by stage of interview

From: SMOKE IT! Promoting a change of opiate consumption pattern - from injecting to inhaling

  T1 T2 T3
%/MV %/MV %/MV
Place of survey (N = 165) (N = 141) (N = 89)
 Berlin 30.9 31.9 20.2
 Bielefeld 5.5 6.4 1.1
 Dortmund 11.5 11.3 15.7
 Frankfurt 46.1 44.7 57.3
 Hamburg 6.1 5.7 5.6
Sex (N = 165) (N = 141) (N = 89)
 Male 77.0 77.3 79.8
 Female 23.0 22.7% 20.2
Age (N = 165) (N = 141) (N = 89)
 19–29 years 29.7 30.5% 29.2
 30–39 years 40.0 41.8% 46.1
 40 years and over 30.3 27.7% 24.7
 Average age (SD) 34.7 (8.3) 34.3 (8.4) 34.4 (7.8)
Nationality (N = 161) (N = 138) (N = 88)
 Germany 78.9 79.0 81.8
 Other EU country 9.3 10.1 8.0
 Other country outside the EU 11.8 10.9 10.2
Years of heroin or other opiate use (N = 165) (N = 141) (N = 89)
 1–5 years 19.4 19.9 15.7
 6–10 years 24.8 27.0 29.2
 11–15 years 20.0 17.7 22.5
 16–20 years 20.6 21.3 19.1
 21 years and over 15.2 14.2 13.5
 Mean value (SD) 13.3 (8.3) 13.1 (8.2) 13.2 (8.2)
Years of intravenous heroin use (N = 117) (N = 99) (N = 64)
 Mean value (SD) 10.4 (9.0) 10.0 (8.9) 10.7
Ever smoked heroin (N = 139) (N = 120) (N = 70)
 Yes 96.8 97.0 95.3
 No 3.2 3.0 4.7
 Mean value (SD) 11.1 (7.4) 11.0 (7.4) 10.7 (6.7)