Cristina López-del Burgo

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BACKGROUND The choice of a birth control method is influenced by sociocultural and personal factors. We explored the perceived influences in women's choice of a birth control method in five European countries (Germany, France, the UK, Romania and Sweden), where contraception is widely used. STUDY DESIGN This is a cross-sectional study of 1137 randomly(More)
Early age at first sexual intercourse is a particularly important variable for public health policy makers. It is associated with specific unhealthy behaviors, such as having unprotected sex on first sexual intercourse, condom misuse or having multiple (concurrent or lifetime) partners (Kaestle, Halpern, Miller, & Ford, 2005; Louie et al., 2009). These can(More)
BACKGROUND Adequate knowledge is essential for making informed decisions. We attempted to determine the level of knowledge about mechanisms of action of birth control methods in five representative samples of European women. STUDY DESIGN Randomly selected women, aged 18-49 years, completed an anonymous survey in Germany, France, the UK, Sweden and Romania(More)
PURPOSE Adolescents who engage in sex can be affected by a range of negative physical and psychological consequences. We intend to analyze the reasons behind first sex, regret, and the association between reasons and regret. METHODS A questionnaire was implemented to 8,495 high schools students aged 14-18 years residing in the Philippines, El Salvador,(More)
OBJECTIVE Some methods of family planning, such as oral contraceptives, emergency pill or intrauterine device, may occasionally work after fertilization. These effects may be important to some women. We explored Spanish women's attitudes towards contraceptive choices that may have occasional post-fertilization mechanisms of action. STUDY DESIGN(More)
AIMS AND OBJECTIVES To assess women's attitudes towards the mechanisms of action of birth control methods. BACKGROUND When addressing women's knowledge of and attitudes towards birth control methods, researchers frequently focus on side effects, effectiveness or correct use. Women's opinions about mechanisms of action have been much less investigated, and(More)
OBJECTIVE To investigate potential associations between dietary patterns (defined using factor analysis) and difficulty conceiving. DESIGN Case-control study nested in a Spanish cohort of university graduates (Seguimiento Universidad de Navarra [SUN] Project). SETTING Female university graduates all over Spain participating in the SUN Project. (More)
OBJECTIVE The objective of this study is to verify the influence of messages Salvadorian youth receive about sexuality, affection, and leisure from family, friends, and the media on the initiation of sexual activity. METHODS Cross-sectional study based on a representative sample of 2 615 students (from 13 to 19 years of age) in El Salvador. A random(More)
OBJECTIVES This study intends to evaluate whether the belief that condoms are 100% effective in protecting against HIV infection is associated with sexual risk behaviours among youth. METHODS A cross-sectional study was performed in representative samples of high-school students in the Philippines, El Salvador and Peru. Participants completed a(More)
OBJECTIVES To evaluate the prevalence of HIV-related misconceptions in an outpatient centre of Kinshasa (Democratic Republic of Congo) and analyse the association between these beliefs and HIV infection. METHODS A case-control study was carried out from December 2010 until June 2012. We assessed 1630 participants aged 15-49 attending a primary outpatient(More)