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Table 2 Results of the Monte Carlo (MC) simulation study estimating the prevalence of ever Injecting Drug Use (IDU), Belgium, 2000-10

From: Improved benchmark-multiplier method to estimate the prevalence of ever-injecting drug use in Belgium, 2000–10

  Number of seropositive IDUs Number of alive seropositive IDUs Number of alive IDUs Prevalence (/1000)
Year Est*. 95% MI CIƗ Est*. 95% MI CIƗ Est*. 95% MI CIƗ Est*. 95% MI CIƗ
2000 845 [814;877] 642 [612;673] 19497 [13540;27010] 2,9 [2.0;4.0]
2001 876 [848;906] 659 [630;690] 19989 [14147;27663] 3 [2.1;4.1]
2002 909 [879;940] 682 [654;713] 20721 [14724;28166] 3,1 [2.2;4.2]
2003 961 [932;993] 723 [692;755] 22191 [15927;30659] 3,3 [2.3;4.5]
2004 995 [964;1028] 744 [712;775] 22861 [16220;31947] 3,4 [2.4;4.7]
2005 1009 [978;1042] 749 [719;781] 22653 [15743;31955] 3,3 [2.3;4.7]
2006 1031 [997;1063] 758 [726;790] 23178 [16362;31976] 3,4 [2.4;4.6]
2007 1061 [1029;1095] 779 [747;812] 23704 [16583;32937] 3,4 [2.4;4.7]
2008 1080 [1049;1112] 792 [761;826] 24026 [16844;32958] 3,4 [2.4;4.7]
2009 1094 [1062;1127] 798 [766;831] 24358 [17013;33951] 3,4 [2.4;4.8]
2010 1113 [1079;1147] 809 [775;842] 24664 [17565;34403] 3,5 [2.5;4.8]
  1. * Est.: mean estimate; Ɨ 95% MC CI: 95% Monte Carlo Confidence Intervals.