[The problematic use of the mobile phone: cross-sectional analysis of the individual profile and associated factors.].

Objective: The problematic use of mobile phones is a phenomenon that can be associated with a specific individual profile and it has been seen that there are associated factors, although most of them have been studied in a limited way and in small samples. The aim of this study was to describe the association between the problematic use of the mobile phone and social traits, health, and health-related behaviors among high school students.

Methods: This is a cross-sectional study performed in a representative sample of students aged 13-18 years in the Lifestyle Risk Factors in Secondary School Students (FRESC) survey conducted in 2016 in Barcelona (n=3,778).

Smoking-Attributable mortality in Spain in 2016.

Introduction: Smoking-attributable mortality (SAM) is a valuable indicator that can be used to characterize the course and health burden of the smoking epidemic. The aim of this paper was to estimate SAM in Spain in 2016 in the population aged 35 and over, using the best available evidence.

Methods: A smoking prevalence-dependent analysis based on the estimation of population-attributable fractions was performed.

Trends in Inequalities in the Use of Condom by Urban Teenagers in Spain.

Social and economic inequalities in condom use by adolescents have been reported previously. Also, condom use has declined during the last decade. The aim of the study was to describe trends in the use of condoms in our setting, and how these trends may differ between socioeconomic groups in boys, and separately in girls, aged 17-19 years attending school in Barcelona between 2004 and 2012.

[The study of social inequalities in child and adolescent health in Spain].

Objective: To identify and describe studies on social inequalities in child and adolescent health conducted in Spain with special emphasis on social determinants.

Methods: In July 2012, we conducted a systematic review in the PubMed, MEDES, SCOPUS and COCHRANE databases. We included studies on social inequalities in child and adolescent health in Spain published between 2000 and 2012.

[Tobacco use by adolescents in Barcelona (Spain) and trends in the last 20 years].

Objectives: Smoking is a preventable cause of early death and the habit starts in adolescence. The aim of this study was to describe tobacco consumption in secondary school students in 2008 and trends in the last 20 years in Barcelona.

Material And Methods: We analyzed the trend in tobacco consumption by comparing data from 8 surveys carried out between 1987 and 2008 in the 8th (2nd year of Compulsory Secondary Education), 10th (4th year of Compulsory Secondary Education) and 12th (2nd year of Compulsory Secondary Education) years of secondary school.

[Potential selection bias in telephone surveys: landline and mobile phones].

The increasing use of mobile phones in the last decade has decreased landline telephone coverage in Spanish households. This study aimed to analyze sociodemographic characteristics and health indicators by type of telephone service (mobile phone vs. landline or landline and mobile phone).

Driving under the influence of alcohol or drugs among adolescents: the role of urban and rural environments.

This study aimed to describe driving under the influence of alcohol or drugs (DUIAD) and riding in a vehicle with a driver under the influence of alcohol or drugs (RDUIAD) and their associated factors among rural and urban adolescents in Spain. We performed a cross-sectional study including 2067 students from Barcelona and a rural area 60 km north of this city. The prevalences of ever DUIAD and RDUIAD were 17% and 41% among 17-18 year-old adolescents.

Long-term effect of the influenza A/H1N1 pandemic: attitudes and preventive behaviours one year after the pandemic.

This study aimed to describe changes in attitudes and behaviours regarding influenza A infection 1 year after the end of the pandemic. A cross-sectional study was performed based on two population-based telephone surveys including 1027 (February, 2010) and 1000 (February, 2011) participants in Spain. The percentages of the respondents who reported that they had adopted preventive measures to avoid Influenza infection declined 1 year after the pandemic.

Bullying among schoolchildren: differences between victims and aggressors.

Objective: To identify the factors associated with bullying behaviors among adolescents by analyzing victims, aggressors and victims/aggressors separately.

Methods: A cross-sectional study was performed in a representative sample of 3,089 secondary school students (13-18 years old) in Barcelona (Spain). To define bullying behaviors, we used three questions about different types of mistreatment (jeering, attacking, marginalizing).

Factors associated with media use among adolescents: a multilevel approach.

Background: During the last few years, several studies have reported a high screen time use among adolescents that can be related to negative health effects. The aims of this study were to describe screen time use among secondary school students and to identify individual- and school-level factors associated with media use.

Methods: A cross-sectional study based on a self-reported questionnaire was performed among a representative sample of 2675 secondary school students (13-19 years old).

Adoption of preventive measures during and after the 2009 influenza A (H1N1) virus pandemic peak in Spain.

Objective: This study describes the preventive measures adopted by the Spanish population towards 2009 influenza A (H1N1) virus and their associated factors.

Method: An anonymous computer-assisted telephone interview survey was conducted in Spain in December 2009 and February 2010. Respondents were asked about their perceptions of influenza A (H1N1) virus and the preventive measures adopted.

[Attitudes and preventive behaviours adopted during the (H1N1) 2009 influenza virus epidemic in Spain].

Background: In the spring of 2009 the emergence of new influenza virus (H1N1) 2009 caused widespread alarm. The objective of this study is to describe the knowledge and risk perceptions towards the disease and its vaccine and the preventive measures adopted by the population.

Methods: A telephone survey was conducted in two rounds with quotas for age, sex, Autonomous Regions and size of municipality.

[Changes in smoking prevalence among adolescents in Spain].

Objective: To analyse information on adolescent use of tobacco in Spain from different school surveys.

Design: Data on daily smoking prevalence by sex at the end of compulsory education is extracted and figures are compared, analysing trends.

Setting: The five representative studies on adolescents in Spain are reviewed: The National Survey on Drug Use in Secondary School Children (Encuesta estatal sobre uso de drogas en estudiantes de secundaria (ESTUDES); Survey of Health Behaviour in School-aged Children (HBSC-ECERS); Surveillance System of Risk Factors Associated With Non-Transmittable diseases in the Young Population (Sistema de Vigilancia de Factores de Riesgo Asociados a Enfermedades No Transmisibles dirigido a población Juvenil)(SIVFRENT-J); Study of Risk Factors in Secondary School Children (Estudio de factores de riesgo en estudiantes de secundaria) (FRESC); Surveillance Study of Health Behaviour in Adolescents (Estudio de Monitorización de las Conductas de Salud de los Adolescentes) (EMCSAT).

[Factors related to bullying in adolescents in Barcelona (Spain)].

Objectives: Violence and bullying in the school setting are a serious social and health problem that have created great alarm in the last few years. We aimed to describe bullying and factors related to this phenomenon in students in the city of Barcelona.

Methods: We performed a cross-sectional study of a representative sample of 2,727 students from 66 secondary schools in Barcelona.