[High-risk sexual behaviour by partner type among men who have sex with men].
OBJECTIVE
To identify factors associated with high risk sexual practices among men who have sex with men (MSM) in Spain.


METHODS
An online survey was conducted in 2010, which included, among others, questions on HIV/STI sexual behaviours and prevention needs. Unprotected anal intercourse (UAI) with a partner of unknown or discordant HIV status in the past year was defined as a high risk sexual behaviour.


RESULTS
Of the 13,111 participants, 49.4% had had sex with steady partners (SP) and 73.4% with non-steady partners (NSP) in the last 12months; and the prevalence of high risk UAI was 25.4% and 29.4%, respectively. Factors associated with high risk UAI with SP were: living in a city of less than 500,000 inhabitants (OR=1.42 <100,000 inhabitants), being out to no-one or only a few people (OR=1.42), and being HIV-positive with undetectable viral load among those with a high level of HIV/STI knowledge (OR=3.18). Factors associated with high risk UAI with NSP were mainly: having a higher number of sexual partners (OR=4.31 >50 partners), having used drugs for sex (OR=1.33), and at parties (OR=1.19), having a medium (OR=1.82) or low (OR=1.33) level of HIV/STI knowledge, and being HIV-positive (OR=1.56).


CONCLUSIONS
Among MSM, the prevalence of high risk sexual practices is high with both SP and NSP. Factors associated with high risk UAI vary by type of sexual partner (e.g., having HIV with an undetectable viral load). These must be taken into account when planning strategies for primary and secondary prevention.
Centre d'Estudis Epidemiològics sobre les Infeccions de Transmissió Sexual i Sida de Catalunya (CEEISCAT), Institut Català d'Oncologia (ICO), Agència de Salut Pública de Catalunya (ASPC), Generalitat de Catalunya, Badalona, Barcelona, España; CIBER de Epidemiología y Salud Pública (CIBERESP), España; Departament de Pediatria, d'Obstetrícia i Ginecologia i de Medicina Preventiva i de Salut Pública, Facultat de Medicina, Universitat Autònoma de Barcelona, Barcelona, España. Electronic address: cfolch@iconcologia.net.
Cinta
C
Folch
Centre d'Estudis Epidemiològics sobre les Infeccions de Transmissió Sexual i Sida de Catalunya (CEEISCAT), Institut Català d'Oncologia (ICO), Agència de Salut Pública de Catalunya (ASPC), Generalitat de Catalunya, Badalona, Barcelona, España; Stop Sida, Barcelona, España.
Percy
P
Fernández-Dávila
Centre d'Estudis Epidemiològics sobre les Infeccions de Transmissió Sexual i Sida de Catalunya (CEEISCAT), Institut Català d'Oncologia (ICO), Agència de Salut Pública de Catalunya (ASPC), Generalitat de Catalunya, Badalona, Barcelona, España; CIBER de Epidemiología y Salud Pública (CIBERESP), España.
Laia
L
Ferrer
Ministerio de Sanidad, Servicios Sociales e Igualdad, Madrid, España.
Raúl
R
Soriano
Ministerio de Sanidad, Servicios Sociales e Igualdad, Madrid, España.
Mercedes
M
Díez
Centre d'Estudis Epidemiològics sobre les Infeccions de Transmissió Sexual i Sida de Catalunya (CEEISCAT), Institut Català d'Oncologia (ICO), Agència de Salut Pública de Catalunya (ASPC), Generalitat de Catalunya, Badalona, Barcelona, España; CIBER de Epidemiología y Salud Pública (CIBERESP), España; Departament de Pediatria, d'Obstetrícia i Ginecologia i de Medicina Preventiva i de Salut Pública, Facultat de Medicina, Universitat Autònoma de Barcelona, Barcelona, España.
Jordi
J
Casabona
D000328:Adult; D003430:Cross-Sectional Studies; D018451:Homosexuality, Male / Q000523:psychology*; D006801:Humans; D008297:Male; D012309:Risk-Taking; D012725:Sexual Behavior / Q000706:statistics & numerical data*; D012747:Sexual Partners / Q000145:classification; D011795:Surveys and Questionnaires
Conductas de riesgo; Hombres que tienen relaciones sexuales con hombres; Human immunodeficiency virus; Internet; Men who have sex with men; Sexual risk behaviour; Virus de la inmunodeficiencia humana