Table 1.
HIV Risk Analysis: Estimated Risk of Acquiring HIV Based on Number of Individually Assessed Partners
| Maximum # of Individually Assessed Partners |
|||||
|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | Alla | |
| High-risk men (N = 160) | |||||
| Mean HIV risk × 1,000 | 0.9045 | 0.9013 | 0.9006 | 0.9003 | 0.8995 |
| Estimation error (%)b | 0.55 | 0.20 | 0.12 | 0.10 | 0 |
| High-risk women (N = 163) | |||||
| Mean HIV risk × 1,000 | 3.6191 | 3.4768 | 3.4636 | 3.4614 | 3.4603 |
| Estimation error (%) | 4.59 | 0.48 | 0.09 | 0.03 | 0 |
| Men who have sex with men (N =145) | |||||
| Mean HIV risk × 1,000 | 5.2187 | 4.8884 | 4.8524 | 4.8396 | 4.8113 |
| Estimation error (%) | 8.47 | 1.61 | 0.86 | 0.59 | 0 |
| Combined sample (N = 468) | |||||
| Mean HIV risk × 1,000 | 3.1866 | 3.0337 | 3.0176 | 3.0128 | 3.0034 |
| Estimation error (%) | 6.10 | 1.01 | 0.47 | 0.31 | 0 |
a
Presumed “gold standard” to which other sexual behavior assessment strategies were compared.
b
Percentage error compared to “gold standard,” in which all partners are individually assessed. The estimation error for a simulated assessment strategy in which only m sex partners are assessed in detail equals (P (m) - P(M))/P(M), where P(m) is the risk estimate obtained for the simulated strategy and P(M) is the risk estimate obtained when all sexual partners are individually assessed. Larger mean errors indicate reduced accuracy in the HIV/STI risk estimates obtained for a particular assessment strategy.