title: [Heavy episodic drinking, cannabis use and unsafe sex among university students].
abstract: OBJECTIVE
  To determine the incidence of unsafe sex among university students and its association with heavy episodic drinking (HED) and cannabis use.
  
  
  METHODS
  A cohort study was carried out from 2005 to 2011 among university students of the Compostela Cohort (n=517). HED was measured using the third question of the Alcohol Use Disorders Identification Test (AUDIT). Unsafe sex was considered to be sex under the influence of alcohol (SUA) and sex without a condom (SWC). Logistic regression models were created.
  
  
  RESULTS
  The incidence of SUA was 40.9% for women and 53.0% for men, while the SWC incidence ranged from 13.7% for women to 25.7% for men. HED and cannabis use were associated with SUA in both women (OR=2.08, 95% CI: 1.03-4.21; OR=2.78, 95%CI: 1.57-4.92) and men (OR=4.74 (95%CI: 1.49-15.09; OR=4.37, 95%CI: 1.17- 16.36). Moreover, cannabis use in women was associated with SWC (OR=2.96, 95%CI: 1.52-5.75). The population attributable fractions of SUA for HED were 24.7% and 52.9% for women and men, respectively.
  
  
  CONCLUSIONS
  HED and cannabis use represent a public health problem due to their association with a variety of problems, including engagement in unsafe sex. Our results suggest that a significant proportion of unsafe sex could be avoided by reducing this consumption pattern of alcohol.
authors.affiliation: Complexo Hospitalario Universitario de Ourense, Ourense, España. Electronic address: lucia.moure@rai.usc.es.
authors.forename: Lucía
authors.initials: L
authors.lastname: Moure-Rodríguez
authors.affiliation: Departamento de Psicología Clínica y Psicobiología, Universidade de Santiago de Compostela, Santiago de Compostela (A Coruña), España.
authors.forename: Sonia
authors.initials: S
authors.lastname: Doallo
authors.affiliation: CIBER de Epidemiología y Salud Pública (CIBERESP), España; Departamento de Medicina Preventiva, Universidade de Santiago de Compostela, Santiago de Compostela (A Coruña), España.
authors.forename: Pablo
authors.initials: P
authors.lastname: Juan-Salvadores
authors.affiliation: Departamento de Psicología Clínica y Psicobiología, Universidade de Santiago de Compostela, Santiago de Compostela (A Coruña), España.
authors.forename: Montserrat
authors.initials: M
authors.lastname: Corral
authors.affiliation: Departamento de Psicología Clínica y Psicobiología, Universidade de Santiago de Compostela, Santiago de Compostela (A Coruña), España.
authors.forename: Fernando
authors.initials: F
authors.lastname: Cadaveira
authors.affiliation: CIBER de Epidemiología y Salud Pública (CIBERESP), España; Departamento de Medicina Preventiva, Universidade de Santiago de Compostela, Santiago de Compostela (A Coruña), España.
authors.forename: Francisco
authors.initials: F
authors.lastname: Caamaño-Isorna
mesh_terms: D000428:Alcohol Drinking / Q000453:epidemiology*; D002188:Cannabis; D015331:Cohort Studies; D005260:Female; D006801:Humans; D015994:Incidence; D016015:Logistic Models; D008297:Male; D008385:Marijuana Smoking / Q000453:epidemiology*; D017678:Sex Distribution; D013030:Spain / Q000453:epidemiology; D013334:Students / Q000706:statistics & numerical data*; D014495:Universities; D047568:Unsafe Sex / Q000706:statistics & numerical data*
keywords: Cannabis; Consumo intensivo de alcohol; Estudiantes universitarios; Heavy episodic drinking; Prácticas sexuales de riesgo; University students; Unsafe sex