Active Commuting to School among Spanish Preschool Children: A Temporal Change Study between 2013 and 2017.

BACKGROUND: Active commuting to school may increase the total daily physical activity and achieve health benefits among preschool children. Rates of active commuting to school among Spanish children and adolescents have been widely analysed, while the rates of active commuting to school among Spanish preschool children are unknown. AIM: The main objective of this study was to examine the changes in the rates of active commuting to school in a sample of Spanish preschool children between 3 and 6 years old from 2013 to 2017. METHODS: Data were found from five studies carried out across Spain. The study sample comprised 4787 preschool children (4.59 ± 0.77 years old; 51% males). The overall changes in active commuting to school were assessed using multilevel logistic regression analysis. RESULTS: The rates of active commuting to school in Spanish preschool children are around 52%, and the active commuting to school rates have stayed stable throughout the period assessed (odds ratio from 0.40 to 0.58, all p > 0.05). CONCLUSION: In preschool children, the present study obtained a favourable result on active commuting to school, showing a pattern stability in the examined period similar to other ages. It will be of great importance to promote this behaviour to obtain high levels of active commuting to school.

Tobacco cessation among smokers under substance use treatment for alcohol and/or cannabis: study protocol and pilot study.

BACKGROUND: Approximately 80% of people with a substance use disorder (SUD) are smokers. Starting SUD treatment offers the opportunity to also quit smoking. The ACT-ATAC project aims to identify the predictors associated with smoking cessation among persons treated for alcohol and/or cannabis use disorder in Barcelona. This manuscript reports its methodology and the experience of carrying it out during the COVID-19 pandemic. METHODS: Mixed methods project with three substudies. Substudy 1 (S1) comprises heterogeneous discussion groups among clinicians. S2 has two prospective cohorts composed of smokers under treatment for alcohol and/or cannabis use disorder and the clinicians in charge of these patients. Participating smokers will be followed for 12 months and interviewed about their substance use and the tobacco cessation services received using the Spanish version of the users' Knowledge, Attitudes, and Services (S-KAS) scale. The clinicians will be asked about their self-reported practices in smoking cessation using the Knowledge, Attitudes, and Practices (S-KAP) scale. S3 comprises heterogeneous discussion groups with smokers. Data will be triangulated using qualitative and quantitative analyses. To facilitate the recruitment process, the researchers have introduced several strategies (design clear protocols, set monthly online meetings, extend the project, provide gift cards, etc.). DISCUSSION: The results of S1 were used to develop the questionnaires. S2 required some adjustments due to the COVID-19 pandemic, particularly the follow-up interviews being conducted by phone instead of face-to-face, and the recruitment rhythm was lower than expected. Recruitment will last until reaching at least 200-250 users. The fieldwork could not have been possible without the collaboration of the ACT-ATAC team and the introduction of several strategies. Trial registration The ACT-ATAC project has been successfully registered at Clinicaltrials.gov [NCT04841655].

[Smoking control in Spain: current situation and priorities]. / El control del tabaquismo en España: situación actual y prioridades.

This paper presents a strategic analysis of the prevention of smoking in Spain. After a review of the situation of the epidemic and of the current prevention policies with the data available in 2019, it identifies the main problems to improve the prevention of smoking, while proposing strategies and key actions for the future. Considering as major objectives reducing the initiation of smoking and helping smokers quit, the different strategies of action and the key actions to be developed. In addition to helping smokers to stop smoking from the health services, key preventive actions include several public policies including taxation, banning advertising and other forms of promotion, the regulation of tobacco packaging, the expansion of smoke-free spaces, and information to the public on its effects. Some of them have followed a positive path for prevention in Spain but for others there is wide room for improvement. The MPOWER strategy of the WHO offers a guide for the development of the most effective tobacco control policies. In its light it is recommended to put emphasis on actions related to expanding smoke-free areas, to develop distance support services to stop smoking, to periodically carry out advertising campaigns of wide coverage to encourage quitting, to reinforce support for quitting in health care services, to finance pharmacological treatments, to expand the advertising ban to electronic devices that release nicotine, and to increase the tax burden on tobacco and other products delivering nicotine.

Este trabajo presenta un análisis estratégico de la prevención del tabaquismo en España. A partir de una revisión de la situación de la epidemia y de las políticas de prevención vigentes con los datos disponibles en el año 2019, se plantean los problemas prioritarios para mejorar la prevención del tabaquismo, proponiendo unas estrategias y acciones clave para el futuro. Considerando como grandes objetivos evitar el inicio en el tabaquismo y ayudar a los fumadores a dejar el consumo de tabaco, se valoran las diversas estrategias de actuación y las acciones clave a desarrollar. Además de ayudar a los fumadores a dejar de fumar desde los servicios sanitarios, destacan como acciones clave de prevención diversas políticas públicas como la política fiscal, la prohibición de la publicidad y otras formas de promoción, la regulación de los envases del tabaco, la generalización de los espacios sin humo, y la información a la ciudadanía sobre sus efectos perjudiciales. Algunas han seguido una evolución favorable en España, pero en otras hay amplio margen de mejora. La estrategia MPOWER de la Organización Mundial de la Salud ofrece una guía para el desarrollo de las políticas más efectivas de control del tabaquismo. A su luz, se recomienda poner énfasis en acciones relativas a ampliar las normas sobre aire limpio, en desarrollar servicios de apoyo a distancia para dejar de fumar, en realizar periódicamente campañas publicitarias de amplia cobertura para fomentar el abandono del tabaco, en reforzar el apoyo para dejar de fumar desde los servicios sanitarios, en financiar los tratamientos farmacológicos, en ampliar la prohibición de la publicidad de tabaco a los dispositivos electrónicos que liberan nicotina, y en incrementar la carga fiscal sobre el conjunto de labores de tabaco y otros productos con nicotina.

A population based perspective of twenty years of specialized ambulatory treatment for alcohol use disorders in publicly financed clinics. Barcelona 1996-2015.

OBJECTIVE: To provide information on persons treated for alcohol use disorders (AUD) over 20 years in a large city in a Southern European country and its trends, adding knowledge on the frequency of treatment from a population perspective. METHODS: This is a study of the number of annual admissions to ambulatory addiction treatment centers funded by the public sector in Barcelona (Catalonia, Spain) for the years 1996-2015. Descriptive analyses of AUD admissions were conducted, comparing changes in the number of patients entering treatment by different independent variables across periods. For city residents, sex and age-specific population annual treatment initiation rates were estimated. RESULTS: The number of ambulatory admissions to AUD treatment increased over the study period. There were about 2100 treatment admissions per year in 2011-2015, of which one fourth were women. About half of these patients had never been treated before for any substance use disorder. Annual rates of treatment initiation among city residents were 208 and 68 per 100,000 people aged 15 and older for men and women respectively, almost the double among 45-54 years old citizens. Rates of total AUD treatment admission increased moderately, but declined among younger adult men. CONCLUSIONS: These figures provide a basic population-based estimation for formal AUD treatment use in a Southern European urban setting with services available free of charge. The development of ambulatory publicly funded addiction centers may have improved access to treatment for people with AUD. age-related changes in treatment admissions may either be related to trends in the population pattern of drinking or to changes in the city demographics.

[Differences between immediate and 30-day deaths due to traffic injuries according to forensic sources]. / Diferencias entre fallecimientos inmediatos y a 30 días por lesiones por tráfico según fuentes forenses.

OBJECTIVE: To study immediate (same day of the collision) and delayed (within 30 days of the collision) deaths due to traffic injuries in Catalonia (Spain) according to forensic sources and to assess the differences between the two kinds of deaths. MATERIAL AND METHODS: An observational study was conducted of all the traffic accident deaths registered in the Institute of Legal Medicine of Catalonia between January 1(st) 2005 and December 31(st) 2014. Data analysis was performed using the SPSS v.18.0 statistical package. Comparisons of proportions were based on the χ(2) test. RESULTS: During the study period, 4044 deaths due to traffic injuries were recorded. Deaths within 30 days included more women, minors, elderly people, and pedestrians than immediate deaths. CONCLUSIONS: Traffic injury deaths in the 30 days following a crash differ from immediate deaths.

Injury-Related Mortality Over 12 Years in a Cohort of Patients with Alcohol Use Disorders: Higher Mortality Among Young People and Women.

BACKGROUND: The goal of this study was to estimate excess death due to external causes among 18- to 64-year-olds with alcohol use disorder (AUD) who were treated at public outpatient treatment centers, and the time elapsed from treatment initiation to death. METHODS: We conducted a retrospective longitudinal study among 7,012 outpatients aged 18 to 64 years who began treatment for AUD between 1997 and 2007. Deaths due to external causes (intentional and unintentional injuries) were monitored until the end of 2008. Person-years (PY) of follow-up and crude mortality rates (CMRs) were calculated for all study variables, for each sex, and for 2 age groups (18 to 34 and 35 to 64 years). Standardized mortality ratios (SMRs) were estimated by age group and sex. Survival was analyzed using the Kaplan-Meier method and Cox regression. RESULTS: We recorded 114 deaths due to external causes. The CMR was 2.7 per 1,000 PY (95% confidence interval [CI]: 2.2 to 3.2), with significant gender differences only among younger individuals (CMR for males = 3.9 per 1,000 PY [95% CI: 2.2 to 5.5] and CMR for females = 2.8 per 1,000 PY [95% CI: 0.1 to 5.6]). Unintentional injury was the most common cause of death (n = 65), of which acute poisoning (n = 25; 38.5%) and traffic accidents (n = 15; 23.1%) were the most prevalent. Suicide accounted for 91.8% (n = 49) of deaths from intentional injuries. The excess of mortality between the AUD group and the general population (SMR) was 9.5 higher than in the general population (95% CI: 7.9 to 11.4), with significant differences between genders (SMR = 6.1 [95% CI: 4.9 to 7.5] in males and SMR = 20.4 [95% CI: 13.9 to 29.9] in females). Approximately 35% of deaths among individuals aged <35 years and 60% among women occurred within a year of initiating treatment. CONCLUSIONS: This study highlights the importance of excess of mortality among people with AUD and patients' vulnerability during the initial years of treatment. Preventing premature deaths due to external causes among women and younger patients with AUD is a priority.

[Specialised treatment for alcohol abuse or dependence]. / Tratamiento especializado del abuso o dependencia del alcohol.

BACKGROUND: The National Plan for Drugs in Spain (PNSD) fostered the prevention and treatment of illegal drug use disorders, and now also covers alcohol use disorders. The goal of this paper is to estimate the number of persons in specialized treatment because of alcohol in public services. METHODS: Review of the key documents of the PNSD, the drug information system of Catalonia, and the Barcelona drug information system. For Catalonia and Barcelona data from 1991 to 2010 are presented. RESULTS: In recent years, there has been more information available for Spain as a whole, of varying validity and comprehensiveness. In Catalonia, the number of reported admissions to treatment for alcohol use disorders has risen: alcohol causes yearly over 40% of all admissions in the drug addiction treatment network; mean age is 44 years, and 23% are women. In Barcelona, admissions to treatment due to alcohol are more than 2.000 each year, relative frequency is 217 by 100.000 residents over 15 years for men and 67 for women. CONCLUSIONS: Available data shows that for alcohol, the drug information system needs further development in Spain, solving methodological issues. Available data for Catalonia suggests that the network of drug treatment centres has improved treatment for alcohol use disorders along with that of illegal drugs. This information is relevant, as there is almost no population based treatment data. This information should be completed for other Regional Administrations.

Evaluation of the effectiveness of a school-based cannabis prevention program.

BACKGROUND: The effectiveness of a cannabis prevention program in high school students was assessed. METHODS: A quasi-experimental study was designed to evaluate the effectiveness of an intervention implemented in an intervention group (IG) with 39 schools compared with a control group (CG) of 47 schools not exposed to the intervention. Of 224 secondary schools in Barcelona, 86 were assessed in the 2005-2006 school year through a personal questionnaire administered at baseline and 15 months after the intervention. Participants consisted of 4848 ninth graders (14-15 year-olds), 2803 assigned to the IG and 2043 to the CG, according to the type and size of the school and the socioeconomic status of the school's neighborhood. The intervention consisted of a school-based cannabis prevention program (xkpts.com), with four sessions and 16 activities, implemented over 6-10h, with materials for parents and web-based student involvement. Last-month cannabis use was assessed at baseline and at 15 months' follow-up. Process evaluation indicators were assessed. RESULTS: At 15 months follow-up, 8.2% of boys and 8.3% of girls in the IG became last-month cannabis users versus 11.8% of boys and 11.6% of girls in the CG. These differences were statistically significant (p=0.003), representing a 29% reduction in last-month cannabis users in the IG compared with the CG. The incidence of last-month cannabis use was lowest in classrooms that adhered to the program protocol. CONCLUSIONS: The xkpts.com program was effective in preventing progression to last-month cannabis use. Effectiveness was higher in classrooms that adhered closely to the protocol.

Psychiatric morbidity among young-adults cannabis users.

This cross-sectional study aims to determine lifetime prevalence of psychiatric disorders (including substance use disorders, -SUD and other non substance use disorders, -Non-SUD) among 289 young (18- 30 years) regular cannabis users, during the last year, in non-clinical settings in Barcelona. The Spanish version of the Psychiatric Interview for Substance and Mental Disorders (PRISM) was administered. Only 28% of the participants did not present any psychiatric disorder; while 65% had some SUD, the most common related to cannabis use (62%). Nearly 27% presented a non-SUD disorder. A younger age of initiation on alcohol use was associated with the presence of some SUD. Having consumed a greater number of "joints" in the last month was associated with the presence of both psychiatric disorders (SUD and non-SUD). While three quarters of subjects with non-SUD disorders had received some kind of treatment, only 28% of those with any SUD had received treatment. Given the low perception for need of treatment, there is a need for prevention strategies and to be able to offer therapies specifically tailored targeting young cannabis users.

Cost savings associated with 10 years of road safety policies in Catalonia, Spain.

OBJECTIVE: To determine whether the road safety policies introduced between 2000 and 2010 in Catalonia, Spain, which aimed primarily to reduce deaths from road traffic collisions by 50% by 2010, were associated with economic benefits to society. METHODS: A cost analysis was performed from a societal perspective with a 10-year time horizon. It considered the costs of: hospital admissions; ambulance transport; autopsies; specialized health care; police, firefighter and roadside assistance; adapting to disability; and productivity lost due to institutionalization, death or sick leave of the injured or their caregivers; as well as material and administrative costs. Data were obtained from a Catalan hospital registry, the Catalan Traffic Service information system, insurance companies and other sources. All costs were calculated in euros (€) at 2011 values. FINDINGS: A substantial reduction in deaths from road traffic collisions was observed between 2000 and 2010. Between 2001 and 2010, with the implementation of new road safety policies, there were 26 063 fewer road traffic collisions with victims than expected, 2909 fewer deaths (57%) and 25 444 fewer hospitalizations. The estimated total cost savings were around €18 000 million. Of these, around 97% resulted from reductions in lost productivity. Of the remaining cost savings, 63% were associated with specialized health care, 15% with adapting to disability and 8.1% with hospital care. CONCLUSION: The road safety policies implemented in Catalonia in recent years were associated with a reduction in the number of deaths and injuries from traffic collisions and with substantial economic benefits to society.

Résumé OBJECTIF: Déterminer si les politiques de sécurité routière introduites entre 2000 et 2010 en Catalogne, Espagne, qui visaient principalement à réduire de 50% les décès causés par des collisions routières avant 2010, ont été associées à des avantages économiques pour la société. MÉTHODES: Une analyse des coûts a été réalisée dans une perspective sociétale sur un horizon temporel de 10 ans. Elle a pris en compte les coûts suivants: les admissions à l'hôpital, les transports en ambulance, les autopsies, les soins de santé spécialisés, la police, les pompiers et les dépannages routiers, l'adaptation au handicap et la productivité perdue en raison du placement des personnes dans des établissements spécialisés, les décès ou les congés des blessés ou de leurs aidants, ainsi que les coûts matériels et les frais administratifs. Les données provenaient du registre d'un hôpital catalan, du système d´information du Service catalan de la circulation, des compagnies d'assurance et d'autres sources. Tous les coûts ont été calculés en euros (€), selon les valeurs de l'année 2011. RÉSULTATS: Une diminution substantielle des décès causés par collision routière a été observée entre 2000 et 2010. Entre 2001 et 2010, grâce à la mise en œuvre de nouvelles politiques de sécurité routière, on a recensé une diminution de 26 063 collisions routières avec victimes, une diminution de 2909 décès (57%) et une diminution de 25 444 hospitalisations. Le total des économies estimé sur les coûts était d'environ 18 000 millions d'euros. En ce qui concerne ce chiffre, environ 97% résultaient de la réduction des coûts liés à la perte de productivité. Parmi les économies restantes, 63% étaient associées aux soins de santé spécialisés, 15% à l'adaptation au handicap et 8,1% aux soins hospitaliers. CONCLUSION: Les politiques de sécurité routière mises en place en Catalogne ces dernières années ont été associées à une réduction du nombre de décès et de blessures causés par des collisions routières et à des avantages économiques substantiels pour la société.

Resumen OBJETIVO: Determinar si las políticas de seguridad vial introducidas entre los años 2000 y 2010 en Cataluña, España, cuyo propósito principal era la reducción de los fallecimientos causados por accidentes de tráfico en un 50% hasta el 2010, estuvieron asociadas a un beneficio económico para la sociedad. MÉTODOS: Se llevó a cabo un análisis de costes desde una perspectiva social y un horizonte temporal de 10 años. Se tomaron en consideración los costes de las hospitalizaciones, el transporte en ambulancia, las autopsias, la atención sanitaria especializada, la policía, bomberos y asistencia en carretera, la adaptación a la discapacidad y la pérdida de productividad debido a la institucionalización, las bajas por enfermedad o fallecimiento de los heridos o sus cuidadores, así como los costes materiales y administrativos. Los datos se obtuvieron del registro de un hospital catalán, el sistema de información del servicio catalán de tráfico, compañías aseguradoras y otras fuentes. Todos los costes se calcularon en euros (€) según los valores del 2011. RESULTADOS: Entre los años 2000 y 2010 se observó una reducción importante de los fallecimientos causados por accidentes de tráfico. Entre el 2001 y el 2010, con la puesta en práctica de las nuevas políticas de seguridad vial, se produjeron 26 063 colisiones con víctimas menos de las esperadas, 2909 fallecimientos menos (57%), así como 25 444 hospitalizaciones menos. El ahorro total estimado fue de aproximadamente 18 000 millones de euros. De éstos, un 97% se derivó de la reducción de la pérdida de productividad, y del ahorro restante, el 63% estuvo asociado con la atención sanitaria especializada, el 15% con la adaptación a la discapacidad y el 8,1% con la atención hospitalaria. CONCLUSIÓN: Las políticas de seguridad vial puestas en marcha en Cataluña en los últimos años estuvieron asociadas a una reducción en el número de fallecidos y heridos por accidentes de tráfico, así como con beneficios económicos importantes para la sociedad.

Spinal cord injury and traumatic brain injury: a cost-of-illness study.

BACKGROUND: Among traumatic injuries, spinal cord injuries (SCI) and traumatic brain injuries (TBI) are of major importance because of their epidemiological and economic impact on society. The overall objective of this study was to estimate the economic cost associated with people with SCI and TBI in Spain in 2007. METHODS: A cost-of-illness analysis was performed, considering the perspective of society, using a 1-year time horizon. Medical costs, adaptation costs, material costs, administrative costs, and costs of police, firefighters and roadside assistance, productivity losses due to institutionalization and sick leave, as well as an estimate of productivity losses of carers, and productivity losses due to death were included. RESULTS: The economic cost associated with people with SCI is between EUR 92,087,080.97 and 212,496,196.41 (USD 131 million and 302 million) according to the injury mechanism, and between EUR 1,079,223,688.66 and 3,833,752,692.78 (USD 1,536 million and 5,458 million) for people with TBI. CONCLUSIONS: There is an urgent need to develop effective interventions known to prevent SCI and TBI, and to evaluate their effectiveness and efficiency.

Psychometric properties of the CAST and SDS scales in young adult cannabis users.

AIM: To assess the validity of two cannabis use severity scales among young cannabis users and to evaluate their ability to detect Substance Use Disorders (SUD). PARTICIPANTS: 241 volunteers (18-25 years), with a wide spectrum of cannabis use in the last 12 months. MEASUREMENTS: The Cannabis Abuse Screening Test (CAST) and Severity of Dependence Scale (SDS) were self-administered. The Psychiatric Interview for Substance and Mental Disorders (PRISM) was used as gold standard for cannabis use disorders according to DSM-IV. Reliability and validity were assessed for two different CAST coding algorithms (b-binary and f-full) and for the SDS. In addition, the cannabis use diagnostic criteria contained in the PRISM were grouped to approximate forthcoming proposed DSM-V criteria to further evaluate these scales. FINDINGS: 26.6% (95% CI: 21.0-32.2) of the subjects met criteria for cannabis dependence, and 49.0% (95% CI: 42.7-55.3) for cannabis use disorders. For both scales internal consistency (Cronbach's alpha>0.71) and test-retest intraclass correlation coefficients (>0.80) were good. The score 12 in the CAST-full discriminated better than others between presence and absence of dependence (27.0%; 95% CI: 21.4-32.6) while the score for discrimination of SUD was 9 (51.5%; 95% CI: 45.1-57.8). For the SDS the values were 7 (22.0%; 95% CI: 16.8-27.2) and 3 (64.7%; 95% CI: 58.7-70.8), respectively. According to proposed DSM-V criteria, for moderate and severe addiction the values for the CAST-f were 7 (68.5%; 95% CI: 62.5-74.3) and 12 (27%; 95% CI: 21.3-32.6) and for the SDS, 3 (65.0%; 95% CI: 58.7-70.8) and 7 (22%; 95% CI: 17.0-34.3), respectively. CONCLUSIONS: The CAST and SDS applied to young cannabis users are reliable and valid measures to detect cannabis use disorders when compared to both DSM-IV and proposed DSM-V criteria.

Incidence trends of traumatic spinal cord injury and traumatic brain injury in Spain, 2000-2009.

AIMS: The aim of the present study was to estimate the incidence of hospital discharges for traumatic spinal cord injury (TSCI) and traumatic brain injury (TBI) in Spain by injury circumstances (traffic crashes and others), injury severity, gender and age group and to describe its trends over the period 2000-2009. METHODS: It is a study of trends that includes hospital discharges with a primary diagnosis of TSCI or TBI. Crude and age-standardised rates were calculated per million inhabitants. Changes in rates between 2000 and 2009 were assessed through calculation of the relative risk adjusted for age, using Poisson regression. RESULTS: Between 2000 and 2009 in Spain, 10,274 patients were admitted for traumatic TSCI, and 206,503 for TBI. The annual incidence rate for TSCI was 23.5 per million, that for TBI was 472.6 per million. The overall incidence rate for TSCI fell significantly between 2000 and 2009 by 24.2% (traffic-related 40.9%, other 12.9%), as did that for TBI (23.8% overall, 60.2% traffic-related, with no change for other circumstances). Among people aged 65 years and over, no change was observed for TSCI, incidence of TBI fell significantly when due to traffic crashes, but there was a dramatic increase of 87% in men and 89.3% in women when due to other circumstances. CONCLUSIONS: Over the last decade the incidence of these types of injury has fallen significantly when the injury resulted from traffic crashes, and to a lesser extent when from other circumstances. However TBI incidence among people aged 65 and over injured in non-traffic-related circumstances has risen dramatically.

[Changes in smoking prevalence among adolescents in Spain]. / Cambios en la prevalencia del tabaquismo en los adolescentes en España.

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). RESULTS: The prevalence of daily smokers varies among studies, in boys from 8.5 to 13.3% and in girls from 12.7 to 16.4%. Although some series show variations, the trend from 1993 to 2008 is downwards. With data from recent years, weighted annual declines in smoking prevalence in adolescence can be estimated to be 6.47% for boys and 6.96% for girls. CONCLUSIONS: There is a decreasing pattern in adolescent daily smoking prevalence in Spain from the different existing studies, which provide consistent data, although surveillance must be kept due to fluctuations. This is in agreement with tobacco sales statistics and health surveys in the adult population. However, the pace of change should be more rapid and constant.

[Assessment of surveys of adolescents about smoking and the use of alcohol and cannabis in Spain]. / Valoración de las encuestas a adolescentes sobre consumo de tabaco, alcohol y cannabis en España.

INTRODUCTION: Monitoring health-related behaviors in adolescence requires instruments capable of providing valid data The objective of this paper is to review and assess existing information sources on smoking and alcohol and cannabis use by age and sex among adolescents in Spain. METHODS: A search was carried out for studies with repeated observations over time, and their methods and characteristics reviewed. For each study, the number of surveys, their frequency and their sample size are assessed, as well as the instrument used, the available indicators, and the availability, accessibility and comparability of the information. RESULTS: Five sources of information providing data over extended periods of time with accessible data are identified: the National survey on drug use in secondary-school children (Encuesta estatal sobre uso de drogas en estudiantes de secundaria; ESTUDES); the Health behavior in school-aged children study (ECERSHBSC); the Monitoring system for risk factors associated with non-transmissible diseases in young people (Sistema de Vigilancia de Factores de Riesgo Asociados a Enfermedades No Transmisibles dirigido a poblacion juvenil; SIVFRENT-J); the Study of risk factors in secondary school children (Estudio de factores de riesgo en estudiantes de secundaria; FRESC); and the Monitoring study of health behaviors in adolescents (Estudio de monitorizacion de las conductas de salud de los adolescents; EMCSAT). Two of the surveys cover the whole of Spain, one is regional, and two are city-specific. All use solid methods and representative sampling techniques. In some, changes have occurred that make comparison of the evolution of some indicators difficult. Report accessibility is variable; comparability is limited for some surveys. Some provide almost no stratified data. CONCLUSIONS: There are valuable sources of data, but all have shortcomings. Changing the measurement instrument in a survey for comparison with others raises dilemmas as to the internal comparability of series.

Effects of socialization and family factors on adolescent excessive drinking in Spain.

Adolescent drinking has an important health and social impact in many countries. In Spain, this behavior often takes place in groups and in open areas (known as "botellón"). The aim of this study is to describe the prevalence of excessive drinking among Spanish adolescents and its association with socialization and family factors. A national school survey was conducted in 2006 among 26,454 students aged 14-18 years who were selected by two-stage cluster sampling (schools and classrooms). The questionnaire was self-completed with paper and pencil. The outcomes were: habitual excessive drinking or HED (average consumption ≥30 g/day of alcohol among men, and ≥20 g/day among women), binge drinking (drinking 5 or more standard alcohol units in a 2-hour interval), and drunkenness. Logistic regression models were used to estimate the effect of socialization and family factors. Monthly prevalence of HED, binge drinking and drunkenness was 11.2%, 30.9% and 25.6%, respectively. The main factors positively associated with HED were: frequently going out for fun in the evenings, high proportion of friends who drink or get drunk, early onset of alcohol use, low perceived risk of drinking, truancy, illegal drug use, and amount of money spent for personal needs. Family factors were weakly associated with outcomes. Socialization in leisure environments with friends who drink excessively is an important predictor of adolescent excessive drinking in Spain. Thus, prevention must also focus on the community level, limiting alcohol access, building socialization environments without alcohol, and increasing adolescents' risk perception of drinking.