Table 3. HIV prevalence, self-reported HIV status, HIV and sexually transmitted infection testing behaviour among MSM providing an oral fluid specimen across the survey years 2005, 2008 and 2011.

	2005 (n = 1350)		2008 (n = 1277)		2011 (n = 1217)
	n	%	n	%	n	%	p Value
HIV status (oral fluid test result)
Negative	1284	95.5	1216	95.5	1158	95.2
Positive	60	4.5	57	4.5	59	4.8
Adjusted odds of having a positive test result (95% CI)*	1		1.03 (0.70–1.51)		1.16 (0.79–1.71)		0.713
Undiagnosed HIV (among men tested HIV positive)
Diagnosed	35	58.3	42	73.7	44	74.6
Undiagnosed	25	41.7	15	26.3	15	25.4
Adjusted odds of having a positive test result (95% CI)*	1		0.59 (0.25–1.39)		0.53 (0.22–1.24)		0.285
Had HIV test in previous 12 months
No	824	66.2	648	52.8	592	49.3
Yes	421	33.8	580	47.2	610	50.7
Adjusted odds of having a positive test result (95% CI)*	1		1.83 (1.55–2.17)		2.12 (1.79–2.51)		<0.001
Had STI other than HIV in previous 12 months
No	1137	87.5	1137	91.1	1039	87.3
Yes	163	12.5	111	8.9	151	12.7
Adjusted odds of having a positive test result (95% CI)*	1		0.71 (0.55–0.92)		1.08 (0.84–1.38)		0.005
Number of unprotected anal intercourse (UAI) partners
0/1 partner	1141	85.7	1076	87.6	1026	85.6
2+ partners	190	14.3	153	12.4	173	14.4
Adjusted odds of having a positive test result (95% CI)*	1		0.93 (0.73–1.17)		1.12 (0.89–1.41)		0.275
UAI with casual partners
No	1073	80.2	981	79.8	894	74.6
Yes	265	19.8	248	20.2	305	25.4
Adjusted odds of having a positive test result (95% CI)*	1		1.12 (0.92–1.37)		1.57 (1.29–1.90)		<0.001
UAI with unknown or discordant partners
No	989	73.6	934	76.0	889	74.1
Yes	349	26.1	295	24.0	310	25.9
Adjusted odds of having a positive test result (95% CI)*	1		0.95 (0.79–1.15)		1.06 (0.88–1.28)		0.512

*Adjusted for age, qualification level, employment status and frequency of gay scene use, which differed between the surveys.