Table 2: Sensitivity and Specificity Performance of Potential Eligibility Criteria by HIV Prevalence, Pilot Study of National HIV Behavioral Surveillance System Among Heterosexuals at Increased Risk, 2006-2007

Potential Eligibility Criteria (Predictor Variables) Participants with Characteristic HIV Prevalence Sensitivity Specificity
No. % (%) (%) (%)
Individual Risk Behavior*
Crack use 1560 11 3.1 23 90
Exchange sex 1686 11 2.9 24 89
≥5 sex partners 3111 21 2.1 32 79
Incarcerated >1 week 1184 8 2.2 13 92
STD diagnosis 1978 13 2.6 25 87
Any of the above 6066 41 2.0 59 59
Sexual Networks*
Partner had HIV-positive or unknown status 8527 58 1.8 75 42
Partner was IDU, MSM§, had been incarcerated, used crack, or participant didn’t know partner’s HIV status 5975 41 1.8 77 37
Partner was HIV-positive, IDU, MSM§; or participant didn’t know partner’s HIV status 8797 55 2.3 46 79
Sexual concurrency** 8566 58 1.5 73 39
Socio-Structural Context
Living in high risk area 12074 82 1.5 87 18
Limited education (≤high school graduate) 10827 73 1.6 84 27
Low income (≤HHS poverty guidelines) 11025 75 1.6 86 25
Low socio-economic status (income ≤HHS poverty guidelines or education ≤high school) 13015 88 1.5 96 12
Total 14750 100 1.4

* Behaviors are in the 12 months prior to NHBS interviewAll sexual network questions are based on participant responses about their most recent opposite-sex partner.
§ Female participants who reported a sex partner was a man who had sex with men.
** Participant had concurrent partners with last sex partner or reported that last partner definitely or probably had concurrent sex partners or did not know if last partner had concurrent partners.
http://aspe.hhs.gov/poverty/07poverty.shtmlHHS indicates Department of Health and Human Services; IDU indicates injection drug use; MSM indicates men who have sex with men; STD indicates sexually transmitted disease.