Table 2. Input indicators.
| Indicator | Data source | Measurement unit | Value |
|---|---|---|---|
| Total Australian population | ABSb | N | 23,781,169 |
| Number of Australian men aged 16 to 69 years old | ABS | N | 8,292,223 |
| Proportion of men aged 16 to 69 years old (of the total Australian population) | ABS | % | 34.9 |
| Proportion of men identifying as gay among men aged 16 to 69 years old | ASHR2c | % | 1.88 |
| Proportion of gay men who were sexually active in the last 12 months | ASHR2 | % | 81.9 |
| Number of men living with HIV in Australia who reported acquiring HIV via male-to-male sexual exposure | ASRd | N | 19,097 |
| Participants in the 2016 GCPS | GCPSe | N | 7,865 |
| Subsample of the 2016 GCPS participants who were 16–69 years old sexually active gay men of HIV negative or unknown status f | GCPS | N | 6,676 |
| Proportion of non-HIV-positive, 16–69 year-old, sexually active gay men in GCPS, who reported behaviour consistent with: | |||
| Conservative scenario: | |||
| HR-I: Condomless anal intercourse with an HIV positive regular male partner (viral load detectable) | % (95% CI) | 0.02 (0.01–0.03) | |
| HR-II: At least one episode of receptive CLAI with any casual male partner in the last 6 months | GCPS | % (95% CI) | 6.1 (5.6–6.7) |
| HR-III: STI diagnosis or positive STI test in the last 12 months | GCPS | % (95% CI) | 4.9 (4.4–5.4) |
| HR-IV: crystal meth use, any (at least monthly) in the last 6 months | GCPS | % (95% CI) | 1.4 (1.1–1.7) |
| more than 10 sex partners in the last 6 months | GCPS | % (95% CI) | 20.7 (19.7–21.7) |
| Overall proportion at high risk for HIV | GCPS | % (95% CI) | 9.7 (9.0–10.4) |
| Relaxed scenario: | |||
| HR-I: Condomless anal intercourse with an HIV positive regular male partner (viral load detectable) | % (95% CI) | 0.02 (0.01–0.03) | |
| HR-II: At least one episode of receptive CLAI with any casual male partner in the last 6 months | GCPS | % (95% CI) | 15.5 (14.6–16.4) |
| HR-III: STI diagnosis or positive STI testing the last 12 months | GCPS | % (95% CI) | 10.6 (9.9–11.3) |
| HR-IV: crystal meth use, any (at least monthly) in the last 6 months | GCPS | % (95% CI) | 9.4 (8.7–10.1) |
| Overall proportion at high risk for HIV | GCPS | % (95% CI) | 28.4 (27.4–29.5) |
b—ABS—Australian Bureau of Statistics.
c—ASHR2—Second Australian study of Health and relationships.
d—Annual Surveillance Report 2016.
e—GCPS—Gay Community Periodic Surveys in Australia.
f—In 2016, Gay Community Periodic Surveys were conducted in New South Wales, Victoria, Queensland, South Australia, Western Australia and Tasmania.