Table 5.

Factors associated with transmission clusters, univariate/multivariate analysis.

		Univariate analysis		Multivariate analysis
Variables		OR *	95% CI †	Adjusted OR	95% CI
Gender	Female	Reference		Reference
	Male	4.8	3.3–7.1	2.6	1.5–4.7
	Transexual	2.4	0.4–15	NA‡	NA
Transmission route	Heterosexual	Reference		Reference
	MSM§	4.5	3.2-6.1	2.1	1.4–3.2
	MNNSST¶	2.9	1.9-4.3	1.4	0.8–2.3
	PWID∥	1.6	0.8-3.1	NA	NA
	Other	0.6	0.1–3.1	NA	NA
Region of origin	Spain	Reference		Reference
	Latin America	0.3	0.2–0.4	0.3	0.2–0.4
	Sub-Saharan Africa	<0.01	<0.001–0.06	0.02	0.003–0.2
	North Africa	0.3	0.1–0.9	0.4	0.2–1.0
	Europeƪ	0.3	0.1-0.7	0.3	0.03–3.5
	Other	0.1	0.1–1.0	0.4	0.1–1.6
Age group	<20	0.7	0.3–1.5	NA	NA
	20–29	Reference		Reference
	30–39	0.6	0.5–0.9	0.6	0.4–0.9
	≥40	0.7	0.5–1.0	0.6	0.4–0.9
Spanish region	Basque Country	Reference		Reference
	Galicia	2.1	1.6–2.7	1.5	1.1–2.2
Genetic form	A	0.7	0.3–1.4	NA	NA
	B	Reference		Reference
	C	0.8	0.4–1.5	NA	NA
	F	2.4	1.4–3.9	2.5	1.3–5.0
	G	0.3	0.1–0.7	0.4	0.1–1.5
	CRF02_AG	0.2	0.1–0.3	0.6	0.3–1.2
	CRF_BF	0.2	0.1–0.5	0.1	0.03–0.4
	URF	0.5	0.3–0.8	0.8	0.4–1.4
	Other	0.4	0.3–0.7	0.3	0.2–0.8

^*OR, odds ratio.

^†95% CI, 95% confidence interval.

^‡NA, not applicable.

Adjusted OR were not calculated for categories with p < 0.1 in the univariate analysis.

^§MSM, men having sex with men.

^¶MNSST, men who have non-specified sexual transmission.

^∥PWID, people who inject drugs.

^ƪSpain not included.