. 2016 Feb 4;16:63. doi: 10.1186/s12879-016-1388-3

Table 2.

Factors associated with at least one positive bacterial STI test for chlamydia, gonorrhoea and/or syphilis in consultations involving MSW (N = 3,016) at STI clinics — the Netherlands, 2006–2012

	Diagnosed^a (n)	Tested^a (n)	Percent	Univariate analysis			Multivariate analysis^b
	Diagnosed^a (n)	Tested^a (n)	Percent	RR	95 % CI	p value*	RR adj^c	95 % CI	p value*
Age group						<.001			<.001
≥ 35 years	119	1 000	11.9	ref			ref
25–34 years	220	1 238	17.8	1.49	1.21–1.84	<.001	1.41	12–1.77	0.003
15–24 years	208	777	26.8	2.25	1.84–2.76	<.001	2.30	1.83–2.88	<.001
Country/Area of origin						0.06
The Netherlands	245	1 478	16.6	ref
Eastern Europe	129	618	20.9	1.26	1.04–1.52	0.02
Other European countries	29	133	21.8	1.32	0.93–1.85	0.12
Latin America	75	436	17.2	1.04	0.82–1.31	0.76
Sub-Saharan Africa	4	40	10.0	0.60	0.24–1.54	0.29
Asia	12	57	21.1	1.27	0.76–2.13	0.36
Turkey/Morocco	32	127	25.2	1.52	1.10–2.09	0.01
Other or unknown	21	124	16.9	1.02	0.68–1.53	0.92
Self-defined sexual preference
Heterosexual	87	839	10.4	ref			ref
Homosexual/Bisexual	456	2 162	21.1	2.03	1.64–2.52	<.001	1.62	1.27–2.06	<.001
Intravenous drug user in the past 6 months
No	524	2 886	18.2	ref
Yes	10	62	16.1	0.89	0.50–1.58	0.69
Previous bacterial STI^d in the past 2 years
No	364	2 181	16.7	ref			ref
Yes	112	421	26.6	1.59	1.33–1.92	<.001	1.39	1.15–1.68	0.001
HIV test result						<.001			<.001
Negative test	415	2 611	15.9	ref			ref
Positive test	37	65	56.9	3.58	2.85–4.50	<.001	2.71	1.68–2.64	<.001
Known HIV positive	76	205	37.1	2.33	1.91–2.84	<.001	2.11	2.15–3.43	<.001

^*Bold numbers are significant p value <0.05

^a509 missing data out of a total of 3,016 consultations in MSW (17 %): 1 for age, 3 for country/area of origin, 15 for self-defined sexual preference, 68 for injecting drug use, 414 for previous bacterial STI, 135 for previous HIV test

^bVariables included in the multivariate analysis: age group, self-defined sexual preference, previous bacterial STI and HIV test result

^cAdjusted for age group, self-defined sexual preference, previous bacterial STI and HIV test

^dChlamydia, gonorrhoea and/or syphilis