Table 1. Summary ORs for general population and high-risk groups.

Risk Factor and Gender		General Population				High-risk Groups
Women	Men	No. of Studies	Exposure prev. in cases*	Exposure prev. in controls†	Summary OR (95% CI)	No. of Studies	Exposure prev. in cases*	Exposure prev. in controls†	Summary OR (95% CI)
Sex Partners: 3+ vs 0–2		12	33%	18%	3·64 [2·87–4·62]	1	42%	26%	2·04 [1·48–2·83]
Paid sex		9	7%	3%	2·29 [1·45–3·62]	6	50%	35%	2·42 [1·31–4·45]
STI		13	29%	12%	2·39 [2·01–2·84]	2	42%	48%	1·05 [0·68–1·63]
HSV-2		9	56%	30%	4·62 [2·85–7·47]	7	87%	56%	3·69 [2·56–5·33]
	Sex Partners: 3+ vs 0-2	6	65%	40%	3·15 [2·08–4·78]	.	.	.	·
	Paid sex	10	32%	18%	1·75 [1·30–2·36]	7	77%	69%	2·12 [1·43–3·15]
	STI	8	55%	25%	3·05 [2·22–4·20]	2	73%	57%	2·22 [0·95–5·16]
	HSV-2	7	60%	13%	6·97 [4·68–10·38]	2	62%	37%	2·75 [2·13–3·54]

^*exposure prevalence in cases equals the number of HIV-positive individuals with exposure to the risk factor over the total number of HIV-positive individuals; † exposure prevalence in controls equals the number of HIV-negative individuals with exposure to the risk factor over the total number of HIV-negative individuals.