Table 2

Factors associated with unprotected anal intercourse with two or more partners in the previous 12 months: n, row %, unadjusted and multivariate logistic regression (n=639)

	Yes, n (%)	OR	95% CI	p Value	AOR*	95% CI	p Value
Overall	179 (28.0)
Survey location
Edinburgh	66 (24.3)	1
Glasgow	113 (30.8)	1.39	0.97 to 1.98	0.070
Sexual orientation
Gay	164 (27.2)	1			1
Bisexual	15 (44.1)	2.11	1.05 to 4.25	0.037	1.81	0.85 to 3.86	0.124
Age†
16–25	65 (28.0)	1		0.392	1		0.582
26–35	57 (25.9)	0.90	0.59 to 1.36		0.96	0.61 to 1.52
36–45	34 (27.4)	0.97	0.60 to 1.58		0.90	0.51 to 1.59
45+	23 (37.1)	1.52	0.84 to 2.73		1.46	0.74 to 2.89
Area of residence‡
Elsewhere	32 (22.1)	1			1
Glasgow/Edinburgh	143 (30.2)	1.53	0.98 to 2.37	0.059	1.18	0.72 to 1.91	0.514
Employment
Employed	137 (26.7)	1
Other	42 (33.3)	1.37	0.90 to 2.09	0.139
Education
Secondary	25 (26.3)	1.06	0.62 to 1.80
Further/vocational	73 (31.6)	1.37	0.93 to 2.02
Degree/postgraduate	69 (25.3)	1		0.441
Frequency of gay scene use
Once a month or less	29 (16.9)	1		<0.001	1		0.002
2–3 times a month	42 (26.8)	1.80	1.06 to 3.07		2.00	1.11 to 3.61
Once or more a week	108 (34.8)	2.64	1.66 to 4.19		2.60	1.54 to 4.39
HIV treatment optimism 1§
Agree	44 (34.4)	1
Uncertain/disagree	129 (26.3)	0.68	0.45 to 1.03	0.070
HIV treatment optimism 2§
Agree	28 (33.7)	1
Uncertain/disagree	145 (27.1)	0.73	0.45 to 1.19	0.208
Had either an HIV or STI test in previous 12 months
No	43 (18.5)	1			1
Yes	130 (32.8)	2.15	1.45 to 3.18	<0.001	1.89	1.24 to 2.86	0.003
HIV status (from saliva test)
HIV−	150 (28.6)	1		0.010	1		0.003
HIV+	12 (50.0)	2.49	1.10 to 5.67		1.52	0.59 to 3.91
Did not provide oral fluid specimen	17 (18.7)	0.57	0.33 to 1.00		0.48	0.26 to 0.88
Drunk on alcohol¶
Never	35 (24.6)	1			1
Always/sometimes	144 (29.0)	1.25	0.81 to 1.91	0.312	0.81	0.49 to 1.33	0.397
Used poppers
Never	95 (23.3)	1			1
Always/sometimes	84 (36.2)	1.86	1.31 to 2.65	0.001	1.44	0.96 to 2.14	0.076
Used stimulant or recreational/illicit drugs
Never	111 (22.3)	1			1
Always/sometimes	68 (47.9)	3.20	2.16 to 4.73	<0.001	2.75	1.74 to 4.34	<0.001
Used Viagra
Never	138 (25.1)	1			1
Always/sometimes	41 (45.6)	2.49	1.58 to 3.94	<0.001	1.70	0.97 to 2.98	0.062

*Adjusted for sexual orientation, age, area of residence, frequency of gay scene use, HIV/STI testing, HIV status, alcohol, popper, stimulant or recreational/illicit drug and Viagra use.
†Age—Associated with always or sometimes using alcohol, poppers or Viagra during UAI in the previous 12 months (see table 1).
‡Area of residence—Associated with always or sometimes using alcohol during UAI in the previous 12 months (see table 1).
§HIV treatment optimism 1—‘I am less worried about HIV infection now that treatments have improved’, HIV treatment optimism 2—‘I believe that new drug therapies make people with HIV less infectious’.
¶Drunk on alcohol—All alcohol and drug use variables were included in the logistic regression models because of significant correlations found between them.