Below is a summary of HCV prevalence estimates among IDUs in each state and territory according to NSP survey data (see figure HCV prevalence among Australian IDUs). 54 This data is consistent with sentinel and non-sentinel site data.

There appears to be an overall (slightly) increasing trend in HCV prevalence over time. We used regression analysis to determine the best-fitting straight line through the data. Mean and 95% confidence intervals for the trend in prevalence for each state/territory were calculated and are presented below (see figure mean and 95% confidence intervals).

HCV prevalence among Australian IDUs in each state and territory (1999-2007)

Text equivalent below for HCV prevalence among Australian IDUs in each state and territory (1999-2007)

Text version of HCV prevalence among Australian IDUs in each state and territory (1999-2007)

Figures in this description are approximate as they have been read from the graph.
ACT (%)
NSW (%)
NT (%)
QLD (%)
SA (%)
TAS (%)
VIC (%)
WA (%)
Indigenous (%)
Australia (%)
1999
60
60
49
38
42
39
60
50
-
50
2000
58
68
42
39
48
54
62
41
-
54
2001
62
72
60
45
52
57
70
55
-
59
2002
79
70
62
49
43
45
58
44
60
57
2003
80
69
48
50
46
59
67
60
64
60
2004
70
70
56
52
48
48
70
60
69
62
2005
74
69
50
53
46
60
68
60
71
62
2006
72
70
30
55
43
58
71
58
70
63
2007
90
69
62
60
40
61
72
45
69
63
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Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs for each state and territory (1999-2007)


Text equivalent below for Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs (1999-2007)Text equivalent below for Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs in the ACT (1999-2007)Text equivalent below for Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs in NSW (1999-2007)Text equivalent below for Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs in the NT (1999-2007)Text equivalent below for Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs in QLD (1999-2007)Top of pageText equivalent below for Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs in SA (1999-2007)Text equivalent below for Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs in TAS (1999-2007)Text equivalent below for Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs in VIC (1999-2007)Text equivalent below for Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs in WA (1999-2007)Text equivalent below for Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs in Indigenous Australians (1999-2007)
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Text version of Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs for each state and territory (1999-2007)

Figures in this description are approximate as they have been read from the graph.

Mean and 95% confidence intervals for the trend in prevalence of HCV among Australia IDUs for each state and territory (1999-2007) consists of ten graphs:
    • HCV prevalence among Australian IDUs
      • The 95% confidence interval narrows from a range of 50-55 in 1999 to 56-59 in 2003 before widening to 61-66 in 2007.
      • The mean increases gradually from 52 in 1999 to 64 in 2007.

    • HCV prevalence among Australian IDUs in the Australian Capital Territory
      • The 95% confidence interval narrows from a range of 49-70 in 1999 to 66-78 in 2003 before widening to 72-94 in 2007.
      • The mean increases gradually from 60 in 1999 to 82 in 2007.

    • HCV prevalence among Australian IDUs in New South Wales
      • The 95% confidence interval narrows from a range of 60-71 in 1999 to 66-72 in 2003 before widening to 66-78 in 2007.
      • The mean increases gradually from 66 in 1999 to 71 in 2007.

    • HCV prevalence among Australian IDUs in the Northern Territory
      • The 95% confidence interval narrows from a range of 35-69 in 1999 to 42-60 in 2003 before widening to 34-68 in 2007.
      • The mean decreases gradually from 51 in 1999 to 50 in 2007.

    • HCV prevalence among Australian IDUs in Queensland
      • The 95% confidence interval narrows from a range of 38-41 in 1999 to 49-50 in 2003 before widening to 58-61 in 2007.
      • The mean increases gradually from 39 in 1999 to 60 in 2007.

    • HCV prevalence among Australian IDUs in South Australia
      • The 95% confidence interval narrows from a range of 41-52 in 1999 to 42-48 in 2003 before widening to 38-49 in 2007.
      • The mean decreases gradually from 48 in 1999 to 44 in 2007.

    • HCV prevalence among Australian IDUs in Tasmania
      • The 95% confidence interval narrows from a range of 38-54 in 1999 to 49-58 in 2003 before widening to 51-69 in 2007.
      • The mean increases gradually from 46 in 1999 to 60 in 2007.

    • HCV prevalence among Australian IDUs in Victoria
      • The 95% confidence interval narrows from a range of 55-66 in 1999 to 64-69 in 2003 before widening to 66-78 in 2007.
      • The mean increases gradually from 60 in 1999 to 71 in 2007.

    • HCV prevalence among Australian IDUs in Western Australia
      • The 95% confidence interval narrows from a range of 38-60 in 1999 to 46-58 in 2003 before widening to 44-65 in 2007.
      • The mean increases gradually from 49 in 1999 to 54 in 2007.

    • HCV prevalence among Australian IDUs in Indigenous Australians
      • The 95% confidence interval narrows from a range of 54-61 in 1999 to 62-67 in 2003 before widening to 68-76 in 2007.
      • The mean increases gradually from 58 in 1999 to 71 in 2007.
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