Table 2.

Estimated HIV transmission risk and STI incidence in the study over time, by risk group and site

	Thailand			Brazil			Zambia		Total
	Heterosexual men (n=100)	MSM (n=100)	Heterosexual women (n=100)	Heterosexual men (n=64)	MSM (n=100)	Heterosexual women (n=99)	Heterosexual men (n=86)	Heterosexual women (n=100)	(N=749)
Estimated HIV transmissions per 100 HIV-positive individuals (SE)
Baseline (for the past three months)	0.09 (0.69)	1.02 (0.65)	0.09 (0.76)	0.68 (0.75)	9.33 (0.60)	0.96 (0.60)	0.12 (0.67)	0.22 (0.67)	1.56 (0.24)
For the 12 months after baseline	0.18 (0.87)	2.49 (0.85)	0.56 (0.93)	1.45 (1.11)	9.92 (0.87)	2.21 (0.86)	0.25 (0.90)	0.72 (0.85)	2.22 (0.32)
Over the 15 months assessed	0.27 (1.72)	3.52 (1.67)	0.64 (1.86)	2.08 (2.13)	19.5 (1.68)	3.20 (1.66)	0.36 (1.77)	0.91 (1.69)	3.81 (0.63)
STI incidence (over 12 month follow-up) (95% CI) [person-years]		50.4% (36.3%, 68.1%) [83.4]	5.1% (1.7%, 11.9%) [98.1]		34.1% (22.3%, 50.0%) [76.2]	15.2% (7.9%, 26.6%) [78.9]		11.9% (5.9%, 21.2%) [92.7]	22.4% (18.1%, 27.3%) [429.2]

STI=sexually transmitted infection; SE=standard error.