Table 1.

Male indexes’ HIV status cross-classified by female partners’ HIV status^*

	Female partner HIV status			Newman’s r estimate (SE) (95% CI)†
Male index HIV status	Negative	Positive	Total	Naive	WCR
Negative	513 (86%)	27 (5%)	540	0.465 (0.062)	0.539 (0.068)
Positive	26 (4%)	28 (5%)	54	(0.342 to 0.587)	(0.407 to 0.671)
Total	539	55	594

^*Male index participants (n=253) in the Ho Chi Minh City Sex Network study (2009) provided data on their HIV status as well as the HIV status of up to five of their recent sexual partners (n=594). Male indexes’ HIV status was obtained via a combination of biological testing and self-report; partner HIV status was self-reported by male index participants.

^†Newman’s r is equivalent to the standard unweighted kappa statistic.