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Table 2 Method of heroin administration during the last 30 days before the interview (stage T1)

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

  Sex Age (years) Total
  M F 19–29 30–39 40+
IV heroin use last month (N = 125) (N = 38) (N = 47) (N = 66) (N = 50) (N = 163)
 Yes 68.0% 55.3% 70.2% 62.1% 64.0% 65.0%
 No 32.0% 44.7% 29.8% 37.9% 36.0% 35.0%
Times of IV heroin use per day (N = 80) (N = 19) (N = 30) (N = 39) (N = 30) (N = 99)
 Mean value (SD) 3.2 (3.6) 4.1 (2.8) 3.6 (2.8) 3.6 (4.7) 2.8 (1.7) 3.4 (3.5)
 Median 2.5 3.5 3.25 2.0 2.75 3.0
Smoked heroin last month (N = 120) (N = 38) (N = 47) (N = 64) (N = 47) (N = 158)
 Yes 84.2% 76.3% 85.1% 79.7% 83.0% 82.3%
 No 15.8% 23.7% 14.9% 20.3% 17.0% 17.7%
Smoked heroin last month (N = 101) (N = 29) (N = 40) (N = 51) (N = 39) (N = 130)
 Less than once a week 24.8% 17.2% 32.5% 23.5% 12.8% 23.1%
 Regularly, once a week 10.9% 10.3% 15.0% 9.8% 7.7% 10.8%
 Regularly, several times a week 19.8% 24.1% 15.0% 21.6% 25.6% 20.8%
 Regularly, at least once a day 44.6% 48.3% 37.5% 45.1% 53.8% 45.4%