Understanding the relationship between gender and mental health in adolescence: the Gender Adherence Index (GAI).

Half of all mental health disorders appear during adolescence, although it is still far from clear how they relate to gender (not sex) criteria. This study aims both to analyse the relationship between gender and adolescent mental health and to propose an index: the Gender Adherence Index (GAI). We used cross-sectional, secondary data from 3888 adolescents (aged 13-19) from the FRESC Health Survey on Adolescence in Barcelona. We analysed the interaction among sex, age and socio-economic status with several mental health indices. Additionally, we computed a Gender Adherence Index (GAI) to transcend the information-poor binary sex label, and thus assess to what extent mental health can be predicted by the gender expression of adolescents irrespective of their biological sex. We found that older age and lower economic status have a greater impact on the emotional distress of girls, who reported lower self-perceived mental health than boys. Nevertheless, girls obtained higher scores regarding their prosocial behaviour, which is protective against mental health problems. The GAI was retained in all statistical models stressing it as a relevant metric to explain the variability of adolescent emotional distress. Young people who showed adherence to normative femininity in their lifestyles showed higher prosocial behaviour but did not tend to present more emotional distress. Despite its limitations, this is a novel attempt to explore the relationship between gender expression and mental health. Better defined indices of gender adherence could help us to improve our predictive capacity of mental health disorders during adolescence.

The Incidence of Obesity, Assessed as Adiposity, Is Reduced After 1 Year in Primary Schoolchildren by the POIBA Intervention.

BACKGROUND: Childhood obesity is becoming a serious problem, and prevention programs are needed. OBJECTIVE: The purpose of this study was to evaluate, after 1 y, the effectiveness of a multicomponent, school-based obesity intervention program. METHODS: This intervention, conducted in Barcelona, Spain, was a quasi-experimental obesity primary prevention intervention targeting schoolchildren aged 9-10 y. Participants were assigned to an intervention group (IG) (1464 students) or to a comparison group (CG) (1609 students). The intervention consisted of a 9-session classroom program, 6 weekly sessions of physical education and out-of-school physical activity, and a workshop for families. It lasted from October 2011 to May 2012. Data obtained at baseline (spring 2011) and follow-up (spring 2012) included information on nutrition and physical activity, through 2 self-reported questionnaires, and measurement of weight, height, triceps skinfold thickness, and waist circumference. The cumulative incidence rate (CIR) of obesity was calculated from triceps skinfold measures. A multilevel logistic regression model was fitted to determine the association between the intervention and the CIR of obesity. The effect size of the program was estimated with Cohen's criteria. RESULTS: The overall prevalence of obesity at baseline was 12.7%. At the 12-mo follow-up, the incidence of obesity was 7.8% in the IG compared with 11.4% in the CG (P < 0.005), representing 31% fewer new cases of obesity in the IG. The Cohen's d effect size of the program was 0.33. In the multilevel analysis, there was a protective effect of the intervention on the CIR of obesity at 12 mo (OR: 0.7; 95% CI: 0.5, 0.9) (P = 0.009). CONCLUSIONS: The first Prevención de la Obesidad Infantil en Barcelona (Childhood Obesity Prevention in Barcelona) (POIBA) intervention, targeting children aged 9-10 y, reduced the incidence of obesity as measured by adiposity. The intervention could prevent 1 in 3 new cases of childhood obesity in this age range.

Prevalence of obesity and related factors in schoolchildren aged 3 to 4 years.

OBJECTIVE: To describe the prevalence of obesity and analyse possible differences in it according to sociodemographic characteristics, diet, physical activity, screen use and family perception of the weight and dietary habits of schoolchildren aged 3 to 4 years in Barcelona. METHODS: We conducted a cross-sectional study in a representative sample of schools selected based on the socioeconomic status (SES) of the corresponding neighbourhood and school ownership. We selected 101 schools in Barcelona and recruited pupils aged 3 to 4 years during the 2016-17 academic year (n = 2936 children). Anthropometric measurements were taken in each participant. Family members completed a questionnaire on eating habits, physical activity, sleeping hours, screen use and the family's perception of the child's weight and diet. The primary variable was the body mass index (BMI) for age and sex, subsequently categorised as normal weight, overweight or obese. RESULTS: Approximately 7.0% of girls and 7.1% of boys aged 3 to 4 years presented obesity. The prevalence of obesity (8.3%) was higher in neighbourhoods of lower SES compared to those of higher SES (5.2%; p = .004). Parents of children with obesity reported that the child had some excess weight or excess weight in 46.9% of cases, 3.9% indicated the child's weight was appropriate and 0.9% that the child was a little underweight or underweight (p < .001). DISCUSSION: The prevalence of obesity in children aged 3 to 4 years is high. There are social and geographical inequalities, and obesity was more prevalent in areas of lower SES. A large percentage of the families of children with obesity do not consider that the child's weight is excessive.

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. Influenza-related consultations decreased, whereas confidence in vaccination increased. Despite the decrease observed in adopting preventive measures, some behaviours were still being adopted long time after the pandemic in general population.

Knowledge, attitude and perceptions of breast cancer screening among native and immigrant women in Barcelona, Spain.

OBJECTIVE: Inequalities between immigrant and native populations in terms of access and use of health services have been described. The objective is to compare knowledge, attitudes, vulnerabilities, benefits and barriers related to breast cancer (BC) and screening mammography among women from different countries resident in Barcelona. METHODS: A cross-sectional survey carried out in Barcelona in 2009. The study population consisted of female residents in Barcelona between 45 and 69 years of age; participants were Spanish nationals or immigrants from low-income countries. 960 participants were asked 72 questions, mainly with Likert responses. The dependent variables were five quantitative scales: (1) knowledge of BC and early detection, (2) attitude towards health and BC, (3) vulnerability to BC, (4) barriers to mammography, (5) benefits of mammography. The independent variables were country of origin, social class, setting, cohabitation, age, mammography use, length of residence and fluency of the language. Analyses compared scale scores stratified by the independent variables. Multivariable linear regression models were fitted to determine the relationship between the scales and the independent variables. RESULTS: We observed inequalities according to country of origin on all scales after adjustment for independent variables. Chinese women presented the greatest differences with respect to native women, followed by Maghrebi and Filipino women. Inequalities exist on the vulnerability and barriers scales according to social class and urban/rural setting, and on the attitude scale according to social class. CONCLUSIONS: Country of origin, social class and urban/rural setting are key contributors to inequality in these scales.

Retail Food Environment around Schools in Barcelona by Neighborhood Socioeconomic Status: Implications for Local Food Policy.

Childhood obesity is a relevant public health problem. The school food environment has been identified as an important factor for promoting healthy eating behaviors. This study assessed the availability of and proximity to unhealthy food stores around schools (n = 22) in the city of Barcelona and its association with neighborhood socioeconomic status (NSES). We conducted this cross-sectional study between 2019 and 2020. First, we identified all food retailers (n = 153) within a 400-m buffer around each school and identified those selling unhealthy food products. Then, we used Poison regression models to measure the association between NSES and the healthy food availability index (HFAI), adjusting for population density and distance. A total of 95% of the food establishments studied were classified as unhealthy (n = 146). In all, 90% of schools that had, at least, two unhealthy retailers in their proximity. There were significant differences in the mean distance to unhealthy establishments according to neighborhood SES and population density (p < 0.05). We found a positive association between schools located in higher SES neighborhoods and a higher availability and affordability of healthy food products (IIR = 1.67, 95% CI = 1.45−1.91 p = 0.000). We found strong social inequalities in the supply of healthy foods in Barcelona. Local food policy interventions addressing retail food environment around schools should consider socioeconomic inequalities.

Cancer mortality inequalities in urban areas: a Bayesian small area analysis in Spanish cities.

BACKGROUND: Intra-urban inequalities in mortality have been infrequently analysed in European contexts. The aim of the present study was to analyse patterns of cancer mortality and their relationship with socioeconomic deprivation in small areas in 11 Spanish cities. METHODS: It is a cross-sectional ecological design using mortality data (years 1996-2003). Units of analysis were the census tracts. A deprivation index was calculated for each census tract. In order to control the variability in estimating the risk of dying we used Bayesian models. We present the RR of the census tract with the highest deprivation vs. the census tract with the lowest deprivation. RESULTS: In the case of men, socioeconomic inequalities are observed in total cancer mortality in all cities, except in Castellon, Cordoba and Vigo, while Barcelona (RR = 1.53 95%CI 1.42-1.67), Madrid (RR = 1.57 95%CI 1.49-1.65) and Seville (RR = 1.53 95%CI 1.36-1.74) present the greatest inequalities. In general Barcelona and Madrid, present inequalities for most types of cancer. Among women for total cancer mortality, inequalities have only been found in Barcelona and Zaragoza. The excess number of cancer deaths due to socioeconomic deprivation was 16,413 for men and 1,142 for women. CONCLUSION: This study has analysed inequalities in cancer mortality in small areas of cities in Spain, not only relating this mortality with socioeconomic deprivation, but also calculating the excess mortality which may be attributed to such deprivation. This knowledge is particularly useful to determine which geographical areas in each city need intersectorial policies in order to promote a healthy environment.

Preventive control of breast and cervical cancer in immigrant and native women in Spain: the role of country of origin and social class.

The study describes the periodic use of cervical and breast cancer screening by women residing in Spain, according to their country of origin, and analyzes whether the observed associations are modified by social class. A cross-sectional design was used, with the study population consisting of women residing in Spain in 2006, ages 25-65 years (N = 10,093) and 40-69 years (N = 6674) in the cervical and breast cancer screening groups, respectively. The information source was Spain's National Health Survey of 2006. The dependent variables were: undergoing periodic cervical cancer screening (every 5 years or less) and breast cancer screening (every 2 years or less). The independent variables were: country of origin, social class, health care coverage, cohabitation, and age. A descriptive analysis was carried out, and robust Poisson regression models were fitted. Women from low-income countries underwent fewer periodic screening exams for cervical cancer and breast cancer. Independent of country of origin, women from the manual classes underwent fewer screening exams than those from the non-manual classes. In the 50-69 years age group, it was mainly women from the manual classes from low-income countries who underwent fewer periodic mammograms. Having only public health care coverage and not cohabiting with a partner were also associated with lower prevalences of use.

[Satisfaction with the breast cancer screening program in Barcelona: a comparison between 2006 and 2016.] / Satisfacción hacia el programa de cribado de cáncer de mama de Barcelona por parte de las mujeres: Comparativa entre 2006 y 2016.

OBJECTIVE: Satisfaction represents the subjective experience derived from the fulfillment or non-fulfillment of the expectations that the subject has regarding assistance. The debate generated by the screening programs requires studying satisfaction as one more element in the evaluation. In 2006, a study was carried out in Barcelona on the satisfaction and expectations generated around screening. Ten years later another was carried out in order to study evolution during this time. The objective of the current study is to investigate the satisfaction with the Breast Cancer Screening Program (BCSP) in Barcelona and to compare with the results obtained in a previous study carried out 10 years ago. METHODS: This was a cross-sectional study, whose study population was women participating in the BCSM. We conducted random sampling. The questionnaire asked for opinion about the informative materials and the information sessions, their level of participation (regular or irregular) and their overall satisfaction with the program. Women who had been referred for further examinations were asked specific questions about their satisfaction with the follow-up process. We conducted a descriptive analysis and compare the results to those obtained in the 2006 survey. We assessed the correlation between satisfaction and importance using the Pearson's correlation coefficient, and we also performed logistic regression analyses. All statistical analyses were conducted using SPSS. RESULTS: Participants were generally satisfied with the program, the professionalism and treatment received from the medical professionals. There was a significant positive correlation with the importance given to each of these dimensions. Women who stated that they did not feel nervous while waiting for the results of the mammography reported that they felt very satisfied with the information received [OR=1.86 (95% CI 1.03-3.36)] and with the equipment used [OR=1.97 (1.02-3.85)]. Non-working women were more satisfied with the information obtained [OR=1.86 (CI 1.06-2.9)]. Most of the results showed improvement with respect to those of the 2006 survey. CONCLUSIONS: It's necessary to continue working towards providing the best possible information, and paying special attention to the most vulnerable groups.

OBJETIVO: La satisfacción representa la vivencia subjetiva derivada del cumplimiento o incumplimiento de las expectativas que el sujeto tiene respecto a la asistencia. El debate generado por los programas de cribado, requiere estudiar la satisfacción como un elemento más en la evaluación. En el año 2006 se llevó a cabo en Barcelona un estudio sobre la satisfacción y las expectativas generadas alrededor del cribado. Diez años después se realizó otra con el fin de poder estudiar la evolución durante este tiempo. El objetivo del presente estudio es investigar la satisfacción con el Programa de Cribado del Cáncer de Mama (BCSP) de Barcelona y compararlo con los resultados obtenidos en un estudio previo realizado hace 10 años. METODOS: Estudio transversal. La población de estudio fueron las mujeres de 50 a 69 años participantes en el PDPCM (105.528 mujeres). El muestreo fue aleatorio y estratificado por distritos; las fuentes de información fueron el padrón de habitantes y los registros de cada oficina técnica. Se llevó a cabo un análisis descriptivo y estratificado por edad y clase social. Se compararon los resultados con los del 2006. La correlación entre la satisfacción y la importancia mediante el coeficiente de relación de Pearson. Se ajustaron modelos de regresión logística. RESULTADOS: Destaca la satisfacción hacia la profesionalidad y el trato recibido. Las mujeres que declararon no sentirse nerviosas durante la espera de resultados, presentaron una OR=1,86 (IC95% 1,03-3.36) de sentirse muy satisfechas respecto a la información y OR=1,97 (IC95% 1,02-3,85) respecto a los equipamientos. Las no trabajadoras en activo se sintieron más satisfechas con la información OR=1,86 (IC95% 1,06-2,9). Las de clase media fueron las más satisfechas con la profesionalidad, OR=2.26 (IC95% 1,08-4,73) respecto clase alta. CONCLUSIONES: Es importante seguir trabajando la información que se facilita prestando especial atención a los grupos que se muestran menos satisfechos en el estudio llevado a cabo.

[Personality traits associated with the substance consumption in young people in a context of vulnerability]. / Rasgos de la personalidad asociados al consumo de sustancias en jóvenes en contexto de vulnerabilidad.

OBJECTIVE: To analyze the patterns of alcohol and cannabis consumption, and their associated factors, in young people aged 16 and 21 in a context of vulnerability. METHOD: Cross-sectional study based on a pre-test questionnaire from an evaluation study, administered to a convenience sample of 365 young people from Social Guarantee Programs (SGP), or who attended activities of community entities from disadvantaged neighborhoods in Barcelona. Dependent variables were experimental, regular, and problematic alcohol and cannabis consumption, while independent variables were impulsivity, sensation seeking, expectations, and beliefs regarding drug use, social skills, and contextual variables. Associations were established using multivariate logistic regression models. RESULTS: The prevalence of intensive alcohol consumption (24.2% for binge drinking and 33.3% for binge drinking) and experimental (51.1%) and problematic cannabis use (12.9%) was higher in SGP students than entity youth. Likewise, they presented higher scores on the impulsivity scales, sensation seeking, expectations and beliefs favorable to alcohol consumption. In general, the prevalence of experimental alcohol consumption was higher in girls than in boys. Regular binge drinking was associated with intense sensations seeking (adjusted odds ratio [aOR]: 1.06; 95% confidence interval [95%CI]: 1.01-1.12), while attending SGP was associated with problematic cannabis use (aOR: 2.73; 95%CI: 1.26-5.89). Positive expectations to alcohol and cannabis use were associated with problematic substance use. CONCLUSION: Individual risk, linked to the higher risk trajectories of SGP students, is associated with a higher problematic consumption of alcohol and cannabis than in young people from community entities exposed to an environmental risk of high frequency of consumption.

Three-Year Follow-Up of the POIBA Intervention on Childhood Obesity: A Quasi-Experimental Study.

Childhood obesity has increased worldwide over the past four decades. This quasi-experimental study aimed to assess the effectiveness of a multicomponent and multilevel school-based intervention (POIBA) at 3 years of follow-up. The nutrition intervention focused on food groups, food pyramid, nutrients, portions, and balanced menus. In total, 3624 children participated in the study. Anthropometric measurements and information on food frequency and behavior, physical activity, and daily screen use were collected in the intervention (IG) and comparison group (CG). Positive unadjusted changes toward adherence to recommendations were found for water, meat, sweets, and fried potato consumption, proper breakfast, not having dinner in front of the TV, out-of-school physical activity, and daily screen use. Three scores were used to calculate the proportion of children making more than one change to improve healthy habits regarding physical activity (global Activity score), nutrition (global Nutrition score), and both (global score). Students exposed to the intervention had a significantly better global Activity score (16.2% IG vs. 11.9% CG; p = 0.012) and Global score (63.9% IG vs. 58.5% CG; p = 0.025). Intervention effects on obesity incidence at 3-year follow-up lost significance but maintained the positive trend. In conclusion, school-based interventions including a family component could be useful to address the childhood obesity problem.

[Prevalence of binge drinking among high school students and urban contextual factors.] / Prevalencia de los episodios de consumo intensivo de alcohol entre estudiantes de secundaria y factores urbanos contextuales.

OBJECTIVE: Many teenagers experiment with addictive substances such as alcohol. The objective of this study was to estimate the frequency of binge drinking among secondary school students and its relationship with sex, grade, and type of school, as well as with urban contextual factors of the school neighborhood: socioeconomic level, density of alcohol outlet premises, and tourist pressure. METHODS: This was an observational cross-sectional study. The study population were the students of 8th and 10th grade (2nd and 4th year of ESO) in the city of Barcelona in 2016. Alcohol use, sex, grade, type of school and school neighborhood were taken from the FRESC survey. The wealth of the neighborhood and tourist pressure were extracted from municipal statistics. The density of alcohol outlets was obtained by direct observation with the OHCITIES instrument. We estimated the prevalence of binge drinking (consumption of five or more units on one occasion) stratifying by age, sex and ownership of the school. We calculated a robust Poisson regression model with the individual and contextual variables and analyzed the situation of those neighborhoods with the highest prevalence of binge. RESULTS: The self-declared frequency of binge drinking in the last 30 days was 6.1% in this sample of 2,329 students, 2.2% in 8th grade and 10.3% in 10th grade. It was higher in boys (7%) than in girls (5.1%), and slightly higher in private subsidized schools (6.4%) than in public schools (5.5%). In the Poisson regression models, neither the coefficients of the three contextual variables nor the type of school reached statistical significance, contrary to those obtained with the individual variables of sex and year. The adjusted prevalence of binge in the 36 neighborhoods ranged from 0 to 18.2%. Comparing the contextual variables of the 8 neighborhoods with the lowest prevalence of binge with the others, both a greater density of local alcohol sales and higher tourism pressure were associated with a higher prevalence of binge drinking, while for wealth there were no significant differences. CONCLUSIONS: The use of alcohol in early adolescence is related to individual variables such as sex and age. Urban contextual factors such as a higher tourist pressure and the density of premises that sell alcohol may exert also some influence.

OBJETIVO: Muchos adolescentes experimentan con sustancias adictivas como el alcohol. El objetivo de este estudio fue estimar la prevalencia del consumo intensivo episódico de alcohol (binge drinking o atracón de bebida) en estudiantes de secundaria y su relación con el género, el curso y el tipo de escuela, así como con factores urbanos contextuales del barrio de escolarización: nivel socioeconómico, densidad de locales de venta de alcohol y presión turística. METODOS: Se trató de un estudio observacional transversal. La población estudiada fue el alumnado de 2º y 4º de Enseñanza Secundaria Obligatoria (ESO) de la ciudad de Barcelona en 2016. El consumo de alcohol, el sexo, el curso, el tipo de escuela y el barrio de escolarización se extrajeron de la encuesta FRESC. La riqueza del barrio y la presión turística se extrajeron de las estadísticas municipales. La densidad de establecimientos de venta de alcohol se obtuvo por observación directa mediante el instrumento OHCITIES. Se estimó la prevalencia de episodios de consumo intensivo de alcohol (cinco o más unidades en una ocasión), estratificando por edad, sexo y titularidad de la escuela. Se calcularon modelos de regresión de Poisson con varianza robusta para estimar las variables relacionadas con una mayor prevalencia de consumo intensivo. RESULTADOS: La frecuencia autodeclarada de episodios de consumo intensivo en los últimos 30 días fue del 6,1% en esta muestra de 2.329 estudiantes, 2,2% en 2º curso y 10,3% en 4º curso. Fue mayor en los chicos (7%) que en las chicas (5,1%), y ligeramente mayor en las escuelas privadas subvencionadas (6,4%) que en las escuelas públicas (5,5%). En los modelos de regresión de Poisson, ni los coeficientes de las tres variables de contexto ni el tipo de escuela alcanzaron significación estadística, a diferencia de los obtenidos con las variables individuales de sexo y curso. La prevalencia ajustada de episodios de consumo intensivo en los barrios osciló entre 0 y el 18,2%. Al comparar las variables contextuales de los ocho barrios con menor prevalencia de consumo intensivo con los demás, tanto una mayor densidad de locales de venta de alcohol como una mayor presión turística se asociaron a una mayor prevalencia de episodios de consumo intensivo, mientras que para la riqueza no hubo diferencias estadísticamente significativas. CONCLUSIONES: El consumo de alcohol en la adolescencia temprana está asociado con variables individuales como el sexo y la edad. Factores urbanos contextuales como una mayor presión turística y la densidad de los locales que venden alcohol podrían ejercer también cierta influencia.

Trends in socioeconomic inequalities in cancer mortality in Barcelona: 1992-2003.

BACKGROUND: The objective of this study was to assess trends in cancer mortality by educational level in Barcelona from 1992 to 2003. METHODS: The study population comprised Barcelona inhabitants aged 20 years or older. Data on cancer deaths were supplied by the system of information on mortality. Educational level was obtained from the municipal census. Age-standardized rates by educational level were calculated. We also fitted Poisson regression models to estimate the relative index of inequality (RII) and the Slope Index of Inequalities (SII). All were calculated for each sex and period (1992-1994, 1995-1997, 1998-2000, and 2001-2003). RESULTS: Cancer mortality was higher in men and women with lower educational level throughout the study period. Less-schooled men had higher mortality by stomach, mouth and pharynx, oesophagus, larynx and lung cancer. In women, there were educational inequalities for cervix uteri, liver and colon cancer. Inequalities of overall and specific types of cancer mortality remained stable in Barcelona; although a slight reduction was observed for some cancers. CONCLUSION: This study has identified those cancer types presenting the greatest inequalities between men and women in recent years and shown that in Barcelona there is a stable trend in inequalities in the burden of cancer.

Socioeconomic inequalities in mortality in Barcelona: a study based on census tracts (MEDEA Project).

The aim of this study is to describe inequalities in socioeconomic indicators and in mortality by sex in the census tracts of Barcelona city during the period 1996-2003. The results show that there is excess mortality in coastal and northern areas. This distribution is similar to that of socioeconomic deprivation and therefore there is an association between mortality and socioeconomic indicators, not only for total mortality but also for the specific causes of death studied. This type of analysis can be useful for planning of public health policy since it allows small areas with high mortality risk to be detected.

[Constructing a deprivation index based on census data in large Spanish cities(the MEDEA project)]. / Construcción de un índice de privación a partir de datos censales en grandes ciudades españolas (Proyecto MEDEA).

OBJECTIVES: a) To describe the methodology used to construct a deprivation index by census tract in cities, to identify the tracts with the least favorable socioeconomic conditions, and b) to analyze the association between this index and overall mortality. METHODS: Several socioeconomic indicators (Census 2001) were defined by the census tracts of the following cities: Barcelona, Bilbao, Madrid, Seville and Valencia. The correlations with the standardized mortality ratio (1996-2003), and the dimensionality of the socioeconomic indicators were studied. Finally, the selected indicators were aggregated in an index, in which the results of the factor loadings from extraction of a factor by principal components were used as weighting values. RESULTS: The indicators with the strongest correlations with overall mortality were those related to work, education, housing conditions and single parent homes. In the analysis of dimensionality, a first dimension appeared that contained indicators related to work (unemployment, manual and eventual workers) and education (insufficient education overall and in young people). In all the cities studied, the index created with these 5 indicators explained more than 75% of their variability. The correlations between this index and mortality generally showed higher values than those obtained with each indicator separately. CONCLUSIONS: The deprivation index proposed could be a useful instrument for health planning as it detects small areas of large cities with unfavorable socioeconomic characteristics and is associated with mortality. This index could contribute to the study of social inequalities in health in Spain.

[Methods to smooth mortality indicators: application to analysis of inequalities in mortality in Spanish cities [the MEDEA Project]]. / Métodos para la suavización de indicadores de mortalidad: aplicación al análisis de desigualdades en mortalidad en ciudades del Estado español (Proyecto MEDEA).

Although there is some experience in the study of mortality inequalities in Spanish cities, there are large urban centers that have not yet been investigated using the census tract as the unit of territorial analysis. The coordinated project <> was designed to fill this gap, with the participation of 10 groups of researchers in Andalusia, Aragon, Catalonia, Galicia, Madrid, Valencia, and the Basque Country. The MEDEA project has four distinguishing features: a) the census tract is used as the basic geographical area; b) statistical methods that include the geographical structure of the region under study are employed for risk estimation; c) data are drawn from three complementary data sources (information on air pollution, information on industrial pollution, and the records of mortality registrars), and d) a coordinated, large-scale analysis, favored by the implantation of coordinated research networks, is carried out. The main objective of the present study was to explain the methods for smoothing mortality indicators in the context of the MEDEA project. This study focusses on the methodology and the results of the Besag, York and Mollié model (BYM) in disease mapping. In the MEDEA project, standardized mortality ratios (SMR), corresponding to 17 large groups of causes of death and 28 specific causes, were smoothed by means of the BYM model; however, in the present study this methodology was applied to mortality due to cancer of the trachea, bronchi and lung in men and women in the city of Barcelona from 1996 to 2003. As a result of smoothing, a different geographical pattern for SMR in both genders was observed. In men, a SMR higher than unity was found in highly deprived areas. In contrast, in women, this pattern was observed in more affluent areas.

[Socioeconomic inequalities in mammography screening in Spanish women aged 45 to 69]. / Desigualdades socioeconómicas en el control mamográfico en mujeres españolas de 45 a 69 años de edad.

OBJECTIVE: To analyse mammography screening in Spanish women aged 45 to 69 according sociodemographic variables and to describe the role of population-based breast cancer screening programmes in terms of variability of said screening. METHODS: Cross-sectional study of the 2011 National Health Survey. The study population includes women living in Spain between late 2011 and early 2012. The weighted sample analysed corresponds to 3,086 women aged 45 to 69. The dependent variables were mammograms and when the last mammogram was performed and why. Independent variables were age, social class, occupational status, country of origin, area of origin (rural/urban), health cover and years the programme had been in place. Logistic regression models were performed, with odds ratio (OR) adjusted according to age and 95% confidence intervals (95% CI). RESULTS: Approximately 91.9% indicated that they had had a mammogram before. The women who had had their last mammography screening in the previous 1 to 2 years were associated with the highest social class (OR: 1.69; 95% CI: 1.03-2.75). The reason for performing the last periodic mammogram via a population-based programme was associated with women aged between 60 and 69 years (OR: 1.51; 95% CI: 1.04-2.19). CONCLUSIONS: The results show that there are still inequalities in preventive practices. Possible risk groups need to be identified in order to promote the implementation of specific actions.

Social inequalities in quality of life in a cohort of women diagnosed with breast cancer in Barcelona (DAMA Cohort).

BACKGROUND: Breast cancer is a challenge for women's health-related quality of life (QoL), compromising their physical health and emotional well-being. QoL is equally distributed among different social groups. The aim of this study to analyze the impact of clinical characteristics and social determinants of health on the QoL of a cohort of women diagnosed and/or treated for breast cancer between 2003 and 2013 in one of the main hospitals in Barcelona's public health network. METHODS: We performed a descriptive cross-sectional study in a cohort of 2235 women with various stages of breast cancer at different stages of their disease. Data were obtained using questionnaires QLQ-C30 and QLQ-BR23 from the European Organization for Research and Treatment of Cancer (EORTC), which include a set of functional and symptomatic scales. We conducted descriptive and bivariate analysis using the Chi-Square test and adjusted for relevant variables using logistic regression. The dependent variables were the functional scales of QoL and the independent variables were sociodemographic and clinical variables. RESULTS: We observed significant differences for most QoL functions. Women from the most disadvantaged class, those in social isolation, or those who had suffered relapses showed the poorest results for most of the function scales. In contrast, age had differential effects depending on the function studied. CONCLUSIONS: The QoL of women diagnosed with breast cancer is closely linked to both their social and economic status, and to their stage of disease progression. It is necessary to explore interventions that focus on the social determinants of health in order to mitigate their effects on breast cancer survivors' QoL.

A childhood obesity prevention programme in Barcelona (POIBA Project): Study protocol of the intervention.

BACKGROUND: Childhood obesity preventive interventions should promote a healthy diet and physical activity at home and school. This study aims to describe a school-based childhood obesity preventive programme (POIBA Project) targeting 8-to-12- year-olds. DESIGN AND METHODS: Evaluation study of a school-based intervention with a pre-post quasi-experimental design and a comparison group. Schools from disadvantaged neighbourhoods are oversampled. The intervention consists of 9 sessions, including 58 activities of a total duration between 9 and 13 hours, and the booster intervention of 2 sessions with 8 activities lasting 3 or 4 hours. They are multilevel (individual, family and school) and multicomponent (classroom, physical activity and family). Data are collected through anthropometric measurements, physical fitness tests and lifestyle surveys before and after the intervention and the booster intervention. In the intervention group, families complete two questionnaires about their children's eating habits and physical activity. The outcome variable is the cumulative incidence rate of obesity, obtained from body mass index values and body fat assessed by triceps skinfold thickness. The independent variables are socio-demographic, contextual, eating habits, food frequency, intensity of physical activity and use of new technologies. EXPECTED IMPACT FOR PUBLIC HEALTH: It is essential to implement preventive interventions at early ages and to follow its effects over time. Interventions involving diet and physical activity are the most common, being the most effective setting the school. The POIBA Project intervenes in both the school and family setting and focuses on the most disadvantaged groups, in which obesity is most pronounced and difficult to prevent.