Table 1.

Characteristics of study samples

	1 Baseline (2005) data on prospective cohort	2 2009 cross-sectional sample
	N = 530	N = 539
Age
Mean (95% CI)	21.3 (21.1–21.5)	24.8 (24.6–25.0)
Years of education
Mean (95% CI)	10.3 (10.1–10.5)	10.7 (10.5–10.9)
Completed grade 12	29%	42%
Enrolled in education	40%	9%
Marital status
Married	6%	15%
Employment status
Employed	24%	42%
Know someone with HIV or died of AIDS	69%	66%
HIV Knowledge
Knows about MTCT	na	64%
Knows that a healthy looking person can have HIV	na	68%
Heard the circumcision protects men	na	26%
Number of stigmatising responses
One	na	25%
Two or three	na	14%
HIV testing history
Yes	na	69%
Know partner’s HIV status
Yes	na	47%

Table provides weighted means (95% CI) and proportions for key sample characteristics (for the proportions, we do not report the number of individuals in each category given the use of sample weights). Column (1) contains baseline data for the sample (N = 530) used to analyse the accuracy of risk perceptions. This sample consists of all black, female respondents who reported risk perceptions in 2005 and who provided samples for HIV testing in 2009. Individuals who self-reported that they were HIV positive were excluded from the analysis samples. Column (2) contains baseline data for the sample (N = 539) used to assess correlates of risk perception. This sample includes all black women who provided data on perceived risk and on all covariates assessed. “Na” = survey question not asked in that year