El papel de la mentalidad de crecimiento en el desempeño de estudiantes de escuela primaria / The Role Of Growth Mindset In Elementary School Children's Performance

Objetivo. Estudiar la relación entre el tipo de mentalidad y el desempeño en comprensión lectora y aritmética de 247 estudiantes de 9 a 12 años de edad de dos escuelas de Argentina. Método. Los participantes completaron un cuestionario basado en una Escala de Mentalidad de Crecimiento y pruebas estandarizadas de comprensión lectora y cálculo aritmético. Además, se utilizaron las calificaciones escolares proporcionadas por docentes y datos sobre el estatus social (ES) aportados por padres/cuidadores. El diseño fue no experimental y transversal. Resultados. Los análisis de regresión jerárquica mostraron que a mayor mentalidad de crecimiento, mejor desempeño escolar, aún al controlar el efecto del ES. La relación del desempeño con las calificaciones fue más fuerte que con las pruebas estandarizadas.

Objective. The aim of the paper was to study the relation between mindset and reading comprehension and arithmetic performance of 247 students aged 9 to 12 years from two schools in Argentina. Method. Participants were asked to complete a questionnaire based on a Growth Mindset Scale, and standardized tests of reading comprehension and arithmetic calculation. In addition, school grades provided by teachers and social status data provided by parents/caregivers were used. The design was non-experimental and cross-sectional. Results. Hierarchical regression analyzes showed that the higher the growth mindset, the better the school performance, even when controlling for the effect of social status on these variables. The relation of performance with grades was stronger than with standardized tests.

EEG Global Coherence in Scholar ADHD Children during Visual Object Processing.

Among neurodevelopmental disorders, attention deficit hyperactivity disorder (ADHD) is the main cause of school failure in children. Notably, visuospatial dysfunction has also been emphasized as a leading cause of low cognitive performance in children with ADHD. Consequently, the present study aimed to identify ADHD-related changes in electroencephalography (EEG) characteristics, associated with visual object processing in school-aged children. We performed Multichannel EEG recordings in 16-year-old children undergoing Navon's visual object processing paradigm. We mapped global coherence during the processing of local and global visual stimuli that were consistent, inconsistent, or neutral. We found that Children with ADHD showed significant differences in global weighted coherence during the processing of local and global inconsistent visual stimuli and longer response times in comparison to the control group. Delta and theta EEG bands highlighted important features for classification in both groups. Thus, we advocate EEG coherence and low-frequency EEG spectral power as prospective markers of visual processing deficit in ADHD. Our results have implications for the development of diagnostic interventions in ADHD and provide a deeper understanding of the factors leading to low performance in school-aged children.

Sleep bruxism in children: relationship with screen-time and sugar consumption.

OBJECTIVE/BACKGROUND: Consumption of added sugar and excessive screen-time is increasing worldwide and is associated with sleeping and behavior disorders, which are related with possible Sleep Bruxism (SB) in children. Therefore, the objective of this investigation was to examine the relationship between screen-time and sugar-consumption and possible SB in children. PATIENTS/METHODS: A cross-sectional study, including parents of 460 4- to 8-year-old children, was performed. Frequency of possible SB was assessed with the Children's Sleep Habits Questionnaire; sugar consumption with the Health Behaviour in School-Aged Children Food-Frequency Questionnaire. Comprehensive measures of screen-time (including cell phones, computers, electronic devices, electronic games, and TV) were taken. The time was recorded in hour/day. All data were analyzed with STATA© data analysis and statistical software version 13.0 (Copyright 1996-2016; Stata-Corp LP, College Station, TX, USA). Spearman correlation test and ordinal-multiple-variable regression analyses were used. RESULTS: Data of 440 subjects Mean age 6.2 years (S.D. 1.8) were analyzed. Prevalence of possible SB was 35% and screen-time was available for 92.9% of the children. Mean screen-time was 2.1 h/day. Parents reported 73% of the children (n = 319) to consume added sugar once a day every day and 20% more than once every day. Correlations of possible SB were statistically significant with screen-time (Rho = 0.8; p = 0.002) and sugar-consumption (Rho = 0.7; p = 0.03). Associations were found between possible SB and increase-to-increase screen-time and sugar-consumption (OR > 2). CONCLUSION: The results of this study demonstrated that as screen-time and sugar consumption increased, the frequency of bruxism in children increased.

Prevalence and Correlates of Meeting Physical Activity Guidelines Among Colombian Children and Adolescents.

BACKGROUND: Global estimates have shown that a small proportion of children and adolescents are physically active. However, the evidence on physical activity (PA) among Colombian children and adolescents is limited. The objective of this study was to describe the prevalence and correlates of meeting PA guidelines among Colombian children and adolescents. METHODS: Data were collected as part of the National Survey of Nutrition 2015. A national sample of 16,612 children and adolescents (3-17 y) was included. Prevalence estimates of meeting PA and active play guidelines were calculated, and Poisson regression models were conducted to identify correlates of PA. RESULTS: Low proportion of Colombian children and adolescents met the PA guidelines. Low engagement in active play was observed among preschoolers. Correlates varied by age group. Female sex was a consistent negative correlate of meeting PA guidelines across all age groups. CONCLUSIONS: Urgent actions are needed to promote active play and PA among Colombian children and adolescents. The correlates identified in our study can help inform the development of actions to overcome the disparities and provide opportunities for children to achieve their full potential for healthy growth and development.

Sleep habits and circadian preferences in school-aged children attending a Mexican double-shift school system.

OBJECTIVE: To determine the differences between sleep habits and circadian preference in school-aged children attending a Mexican double-shift school system. METHODS: This cross-sectional study consisted of 400 elementary public-school children (mean age = 10.77, SD = 0.70 y, from fourth, fifth and sixth grades) in Reynosa, Tamaulipas, in northeastern Mexico. Attending a double-shift school system: 200 from the morning shift and 200 in the afternoon shift. Specific questions regarding sleep habits were collected and for circadian preference, the Morningness-Eveningness Scale for Children (MESC) was used. RESULTS: Multivariate analysis reported no sex differences. Children attending at the morning shift during weekdays rose earlier, reported shorter time in bed and earlier midpoint of sleep than those in the afternoon shift. On weekends, morning shift children went to bed later than afternoon shift. Morning shift reported greater social jetlag, shorter average sleep length and more sleep deficit than afternoon shift. During weekdays and weekends evening type children went to bed later, rose later and reported later midpoint of sleep. Also, evening type reported more social jetlag than morning types. CONCLUSION: This study suggests that early school start times can have a detrimental effect on Mexican children. Moreover, the morning shift children may be at more risk of poor health due to the higher social jetlag, as well as a higher tendency to be sleep deprived. On the other hand, the afternoon shift represents an important social environment that allows children to follow their natural physiological needs and a more optimal sleep health.

Differences of Salivary Ph, Feature, And Volume Of Children At Three Kindergartens With Different Socioeconomic Standard / Diferenças do Ph Salivar, Característica e Volume, de Crianças Em Três Jardins De Infância Com Diferentes Padrões Socioeconômicos

Introduction: Saliva is the most important biological factor to protect against dental caries. When saliva flow is reduced, oral health problems such as dental caries and oral infections can develop. It was suggested that the effect of low salivary pH is more in plaque close to the area of susceptible tooth surface. The presence of saliva in pre-school age children is a significant indicator in oral health assessment oral health. There has been an association between salivary cortisol and socioeconomic variable. Descriptions above have encouraged us to examine the salivary pH, feature, and volume of pre-school-aged community. Thus, this study was aimed to describe the differences in salivary pH, feature, and volume of the children in the three pre-school with different location and socioeconomics aspect. Methods: Descriptive survey, with a population of pre-school students in 3 different kindergartens with different socioeconomic environment. Inclusion criteria were the pre-school-aged community and got permission from parents. Exclusion criteria were a pre-school-aged community under medication treatment causes hyposalivation or hypersalivation and children who did not want to be involved in the study, with total sampling as the sampling technique, resulted in as much a 101 respondents as the study sample. The saliva was collected with unstimulated technique. Data analysis was performed using relative frequency distribution. Results: The salivary pH was slightly higher in male children than female by 0.1. The average pH value was 7.25. The salivary feature was mostly frothy bubbly, followed by thin and watery, and the sticky bubbly feature was found the least. The salivary volume of the pre-school-aged community was mostly in the very less category, followed by the less category, with no normal category was found. the p-values of salivary pH and salivary features were below 0.05 There are no significant differences between the salivary pH and salivary feature of children from the three studied kindergartens. However, there is a significant difference in the salivary volume found in children from kindergartens located in high socioeconomic standard and middle socioeconomic standard areas, which have a higher salivary volume than the children from kindergartens situated in areas with lower socioeconomic standard. Conclusion: since the reduced salivary volume was associated to children with lower socioeconomic standard, this association can justify the higher risk for caries described in the literature (AU)

Introdução: A saliva é o fator biológico mais importante na proteção contra a cárie dentária. Quando o fluxo salivar é reduzido, podem ocorrer problemas na saúde bucal, como cáries e infecções orais. Foi sugerido que o efeito do baixo pH salivar é aumentado na placa, próxima à área de superfície dentária suscetível. A presença de saliva em crianças em idade pré-escolar é um indicador significativo na avaliação da saúde bucal. Houve associação entre cortisol salivar e variáveis socioeconômicas. As descrições acima nos encorajaram a examinar o pH salivar, características e volume da comunidade em idade pré-escolar. Assim, este estudo teve como objetivo descrever as diferenças de pH, característica e volume salivar das crianças de três pré-escolas com localização e aspectos socioeconômicos distintos. Material e Métodos: Pesquisa descritiva, com população de estudantes da pré-escola de três diferentes jardins de infância com diferentes ambientes socioeconômicos. Os critérios de inclusão foram comunidade em idade pré-escolar e permissão dos pais. Os critérios de exclusão foram comunidade em idade pré-escolar sob tratamento medicamentoso que causa hipossalivação ou hipersalivação e também crianças que não quiseram se envolver no estudo, com amostragem total resultando em 101 entrevistados como a amostra do estudo. A saliva foi coletada com a técnica não estimulada. A análise dos dados foi realizada usando distribuição de frequência relativa. Resultados: O pH salivar foi ligeiramente superior nas crianças do sexo masculino do que no feminino em 0,1. O valor médio do pH foi de 7,25. O aspecto salivar era principalmente espumoso com bolhas, seguido de aspecto tênue e aguado, e o aspecto pegajoso e espumante foi o menos encontrado. O volume salivar dos estudantes em idade pré-escolar encontrava-se majoritariamente na categoria inferior a todas, seguida da categoria menos, não sendo encontrada nenhuma categoria normal, onde os valores de p do pH salivar e características salivares estavam abaixo de 0,05. Não há diferenças significativas entre o pH salivar e a característica salivar das crianças dos três diferentes jardins de infância estudados. No entanto, existe uma diferença significativa no volume salivar encontrado em crianças de creches localizadas em áreas de médio e alto padrão socioeconômico, que apresentaram maior volume salivar do que as crianças de creches situadas em áreas de menor padrão socioeconômico. Conclusão: O volume salivar reduzido esteve associado a crianças com menor padrão socioeconômico, logo essa associação pode justificar o maior risco de cárie descrito na literatura. (AU)

Effects of Gender and Body Weight on Children's Peer Choice During Physical Activities.

The present study investigated possible effects of gender and body weight on children's peer choices during physical activities. Twenty-four school-aged children (12 overweight and 12 non-overweight) were observed during 2 play sessions: the 1st session consisted of 2 tests that required agility (A) and 1 that required strength (S) in an A-S-A design; the 2nd session consisted of 2 strength tests and 1 agility in an S-A-S design. Before each session, 2 participants were asked to choose members for their teams. Results suggest that peer gender is a stronger predictor of children's playmate choices than their body weight. More specifically, children preferred to choose a peer of the same gender who was overweight rather than a peer of the opposite gender who was not overweight. However, when there was a choice between an overweight peer and a non-overweight peer of the same gender, the non-overweight child was favored.

Adolescents healthy lifestyle / Estilo de vida saudável dos adolescentes

Abstract Objective: Using a wide and representative sample of adolescents from 37 countries, this study aimed to analyze how age changes adolescents' healthy lifestyle. Methods: The study included 148,839 adolescents who participated in the Health Behavior in School-aged Children 2010 survey. A composite score of a healthy lifestyle was created using the combination of daily physical activity, daily fruit and vegetable consumption, <2 h daily on screen-based behaviors, abstinence from alcohol, and abstinence from tobacco products. Healthy lifestyle measures were based on self-report. Results: 4.7% of boys and 4.4% of girls aged 11 years, 3% of boys and 2% of girls aged 13 years, and 1.5% of boys and 0.8% of girls aged 15 scored perfectly on the healthy lifestyle score. As age increased, the prevalence of adolescents with a healthy lifestyle decreased. In 37 countries and regions, the prevalence of healthy behaviors decreased linearly between early adolescence and the age of 15 years. Conclusions: In general, adolescents do not have a healthy lifestyle. Results from this study highlight that there is still much work to be done in promoting healthy lifestyles and to raise awareness among adolescents of the potential risk to their health status.

Resumo Objetivo Com o uso de uma amostra ampla e representativa de adolescentes de 37 países, analisar como a idade muda o estilo de vida saudável dos adolescentes. Métodos Participaram 148.839 adolescentes provenientes da pesquisa Health Behavior in School-aged Children, de 2010. Foi elaborado um escore composto de um estilo de vida saudável, com a combinação de atividade física diária, consumo diário de frutas e vegetais, menos de duas horas diárias de comportamento sedentário baseado em tempo de tela, abstinência de álcool e abstinência de produtos de tabaco. As medidas do estilo de vida saudável foram baseadas em autorrelato. Resultados Obtiveram um escore perfeito no estilo de vida saudável 4,7% dos meninos e 4,4% das meninas de 11 anos, 3% dos meninos e 2% das meninas de 13 anos e 1,5% dos meninos e 0,8% das meninas de 15 anos. Com o aumento da idade, a prevalência de adolescentes com estilo de vida saudável diminuiu. Em 37 países e regiões, a prevalência de comportamentos saudáveis diminuiu linearmente entre o início da adolescência e os 15 anos. Conclusões Em geral, os adolescentes não têm um estilo de vida saudável. Os resultados deste estudo destacam que ainda há muito trabalho a ser feito na promoção de estilos de vida saudáveis e na conscientização dos adolescentes sobre os riscos potenciais para o seu estado de saúde.

The association of perceived neighbourhood factors and social class with depressive symptoms among Grade 6 elementary school children in Jamaica.

This project investigated the association between Jamaican school-age children's perception of their communities and their levels of depressive symptoms. A cross-sectional survey of sixth-grade students from schools in Kingston, Jamaica was conducted. Results of correlational analyses indicated that there were significant associations between neighbourhood factors and depressive symptoms while multiple regression analyses suggested that neigbourhood factors and social class were predictive of children's depressive symptoms. It appears that the perception of neighbourhood factors, particularly neighbourhood quality and network are associated with depressive symptom while neighbourhood factors may mediate the relationship between low social class and depressive symptoms.

Adolescents' healthy lifestyle.

OBJECTIVE: Using a wide and representative sample of adolescents from 37 countries, this study aimed to analyze how age changes adolescents' healthy lifestyle. METHODS: The study included 148,839 adolescents who participated in the Health Behavior in School-aged Children 2010 survey. A composite score of a healthy lifestyle was created using the combination of daily physical activity, daily fruit and vegetable consumption, <2h daily on screen-based behaviors, abstinence from alcohol, and abstinence from tobacco products. Healthy lifestyle measures were based on self-report. RESULTS: 4.7% of boys and 4.4% of girls aged 11 years, 3% of boys and 2% of girls aged 13 years, and 1.5% of boys and 0.8% of girls aged 15 scored perfectly on the healthy lifestyle score. As age increased, the prevalence of adolescents with a healthy lifestyle decreased. In 37 countries and regions, the prevalence of healthy behaviors decreased linearly between early adolescence and the age of 15 years. CONCLUSIONS: In general, adolescents do not have a healthy lifestyle. Results from this study highlight that there is still much work to be done in promoting healthy lifestyles and to raise awareness among adolescents of the potential risk to their health status.

Distorsión de la imagen corporal en madres hacia sus hijos con sobrepeso u obesidad / Distorted body image of overweight or obese children among mothers

Pediatric obesity is a major public health problem in the country. The imbalance between caloric intake and expense has been recognized as a major contributing factor, however, despite many strategies to combat this pathology the results remain discouraging. The mother is an important treatment intermediary that can have a distorted motherly perception (DMP) about their child's nutritional status. The purpose of this study was to assess motherly perception of body image (MPBI) of their school-age children. We selected mothers with children between 7 and 17 years old from schools in Santiago, Chile. We assessed nutritional status with body index mass (BMI) and pubertal growth (Tanner) and compared MPBI with actual nutritional status. We observed that 54.8% of mothers of obese children and 78.3% of mothers of overweight children had DMP, estimating their child as thinner. DMP among mothers of overweight and obese children could affect treatment adherence and is a key point for intervention.

La obesidad pediátrica es un importante problema de salud pública en el país. El desequilibrio entre ingesta y gasto energético ha sido reconocido como la principal causa, pero pese a las múltiples estrategias para enfrentar esta patología los resultados continúan siendo desalentadores. La madre es un mediador importante en el tratamiento, pudiendo influir la distorsión de la imagen corporal (DIC) en el estado nutricional (EN) de sus hijos. El propósito de este trabajo fue evaluar en población escolar la percepción de la imagen corporal (PIC) de la madre hacia su hijo. Se seleccionaron madres con hijos con edades de 7 a 17 años de colegios de Santiago de Chile. Se determinó el EN según índice de masa corporal (IMC) y desarrollo puberal (Tanner). Se evaluó la PIC de la madre comparándose con lo real. Se observó que el 54,8% de las madres de niños obesos y el 78,3% de las madres de niños con sobrepeso presenta DIC, evaluando a su hijo más delgado. La DIC de la madre con su hijo con sobrepeso u obeso, podría repercutir en la escasa adherencia al tratamiento, siendo un punto clave en el cual intervenir.

The Child Behavior Checklist-Obsessive-Compulsive Subscale Detects Severe Psychopathology and Behavioral Problems Among School-Aged Children.

OBJECTIVE: The aims of this study were (1) to assess obsessive-compulsive symptoms (OCS) dimensionally in a school-aged community sample and to correlate them with clinical and demographical variables; (2) to determine a subgroup with significant OCS ("at-risk for OCD") using the Child Behavior Checklist (CBCL-OCS) and (3) to compare it with the rest of the sample; (4) To review the CBCL-OCS subscale properties as a screening tool for pediatric OCD. METHODS: Data from the Brazilian High Risk Cohort were analyzed. The presence and severity of OCS were assessed through the CBCL-OCS subscale. DSM-IV psychiatric diagnoses were obtained by the Developmental and Well-Being Assessment. Behavioral problems were assessed using the Strengths and Difficulties Questionnaire, the Youth Strengths Inventory, and the CBCL internalizing and externalizing behavior subscales. RESULTS: A total of 2512 (mean age: 8.86 ± 1.84 years; 55.0% male) children were included. Moderate correlations were found between OCS severity and functional impairment (r = 0.36, p < 0.001). Children with higher levels of OCS had higher rates of psychiatric comorbidity and behavioral problems (p < 0.001). A score of 5 or higher in the CBCL-OCS scale determined an "at-risk for OCD" subgroup, comprising 9.7% of the sample (n = 244), with behavioral patterns and psychiatric comorbidities (e.g., tics [odds ratios, OR = 6.41, p < 0.001]), anxiety disorders grouped [OR = 3.68, p < 0.001] and depressive disorders [OR = 3.0, p < 0.001] very similar to those described in OCD. Sensitivity, specificity, positive predictive value, and negative predictive value of the CBCL-OCS for OCD diagnosis were, respectively, 48%, 91.5%; 15.1%, and 98.2%. CONCLUSIONS: The dimensional approach suggests that the presence of OCS in children is associated with higher rates of comorbidity, behavioral problems, and impairment. The "at-risk for OCD" group defined by the CBCL revealed a group of patients phenotypically similar to full blown OCD.

National Trends in Hemoglobin Concentration and Prevalence of Anemia among Chinese School-Aged Children, 1995-2010.

OBJECTIVE: To assess the trend of sex disparity in hemoglobin concentration and prevalence of anemia among Chinese school-aged children from 1995 to 2010. STUDY DESIGN: Data were collected from 360 866 children aged 7, 9, 12, 14, and 17 years during 4 cross-sectional surveys (1995, 2000, 2005, and 2010) of the Chinese National Surveys on Students Constitution and Health. Shifts in hemoglobin concentration distributions were compared by sex. Average shifts and sex differences were calculated with quantile regression models. Logistic regression was used to estimate the prevalence odds ratio of sex for prevalence of anemia in different surveys. RESULTS: The mean hemoglobin concentration increased among Chinese children between 1995 and 2010, from 132.7 to 138.3 g/L in boys, and from 127.7 to 132.3 g/L in girls. The prevalence of anemia decreased from 18.8% in 1995 to 9.9% in 2010. It was higher in rural than urban children among all age groups. The prevalence odds ratios of girls versus boys for anemia increased in both urban and rural areas over time. CONCLUSION: Hemoglobin concentration and prevalence of anemia improved among Chinese school-aged children over time. Hemoglobin concentration improved faster in boys than girls and as a result the relative prevalence of anemia in girls compared with boys increased. Sex-specific preventive guidelines and public health policies for childhood anemia are needed in China.

Discretionary Foods Have a High Contribution and Fruit, Vegetables, and Legumes Have a Low Contribution to the Total Energy Intake of the Mexican Population.

BACKGROUND: Overweight and obesity prevalences in Mexico are among the highest in the world, with dietary factors being the third-leading category of risk contributing to the burden of disease. Consequently, studying the compliance of the Mexican population to food-based dietary recommendations is essential for informing nutritional policies. OBJECTIVES: We described the energy contribution of food groups to total dietary energy intake of the Mexican population and by sociodemographic subgroups and compared these results with Mexican dietary recommendations. METHODS: Twenty-four-hour dietary recalls for participants aged ≥5 y (n = 7983) from the 2012 Mexican National Health and Nutrition Survey were used. Foods and beverages were classified into 8 groups (the first 6 were called "basic foods" and the last 2 "discretionary foods"), as follows: 1) cereals, 2) legumes, 3) milk and dairy, 4) meat and animal products, 5) fruit and vegetables, 6) fats and oils, 7) sugar-sweetened beverages (SSBs), and 8) products high in saturated fat and/or added sugar (HSFAS). Recommendations were based on the Mexican Dietary Guidelines (MDG). Energy contributions from the food groups by age, sex, region, residence (rural or urban), and socioeconomic status (SES) were estimated. RESULTS: The highest contribution to total energy intake came from cereals (33%) followed by HSFAS (16%), meat and animal products (14%), and SSBs (9.8%). Fruit and vegetables (5.7%) and legumes (3.8%) had the lowest contribution. Energy contribution of several food groups differed significantly between population subgroups. Overall, discretionary foods contributed more than one-quarter of total energy intake (26%) and were 13 percentage points above the maximum allowed by the recommendations, whereas the intakes of legumes and fruit and vegetables were much lower than recommended. CONCLUSIONS: Our results show the need to generate a food environment conducive to a healthier diet in the Mexican population.

Determinants of Anemia among School-Aged Children in Mexico, the United States and Colombia.

Anemia affects approximately 25% of school-aged children (SAC-aged 5.00-14.99 years) globally. We determined in three countries the prevalence and determinants of anemia in SAC. Data on sociodemographics, inflammation and nutrition status were obtained from the 2006 Mexican National Nutrition Survey, the 2003-6 US National Health and Nutrition Examination Surveys, and the 2010 Encuesta Nacional de Nutrición Situación Colombia. In the US, vitamin A and iron deficiency (ID) were available only for girls aged 12.00-14.99 years to which our analysis was limited. Associations were evaluated by country using multivariable logistic regression adjusting for confounders and complex survey design. The prevalence of anemia and ID were: Mexico 12% (ID 18%), n = 3660; US 4% (ID 10%), n = 733; and Colombia 4% (ID 9%), n = 8573. The percentage of anemia associated with ID was 22.4% in Mexico, 38.9% in the US and 16.7% in Colombia. In Mexico, anemia was associated with ID (adjusted OR: 1.5, p = 0.02) and overweight (aOR 0.4, p = 0.007). In the US, anemia was associated with black race/ethnicity (aOR: 14.1, p < 0.0001) and ID (aOR: 8.0, p < 0.0001). In Colombia, anemia was associated with black race/ethnicity (aOR: 1.6, p = 0.005), lowest socio-economic status quintile (aOR: 1.8, p = 0.0005), ID (aOR: 2.7, p < 0.0001), and being stunted (aOR: 1.6, p = 0.02). While anemia was uniformly associated with iron deficiency in Mexico, Columbia, and the United States, other measured factors showed inconsistent associations with anemia. Additional data on anemia determinants in SAC are needed to guide interventions.

Obsessive-compulsive symptoms are associated with psychiatric comorbidities, behavioral and clinical problems: a population-based study of Brazilian school children.

Pediatric-onset obsessive-compulsive disorder (OCD) is underdiagnosed, and many affected children are untreated. The present study seeks to evaluate the presence and the clinical impact of OCD and obsessive-compulsive symptoms (OCS) in a large sample of school-age children. In Phase I, we performed an initial screening using the Family History Screen (FHS). In Phase II, we identified an "at-risk" sample, as well as a randomly selected group of children. A total of 2,512 children (6-12 years old) were assessed using the FHS, the Development and Well-Being Assessment (DAWBA), the Strengths and Difficulties Questionnaire (SDQ), and the Child Behavior Checklist (CBCL). Data analyses included descriptive and multivariate analytical techniques. 2,512 children (mean age: 8.86 ± 1.84 years; 55.0% male) were categorized into one of the three diagnostic groups: OCD (n = 77), OCS (n = 488), and unaffected controls (n = 1,947). There were no significant socio-demographic differences (age, gender, socioeconomic status) across groups. The OCS group resembled the OCD on overall impairment, including school problems and delinquent behaviors. However, the OCD group did have significantly higher rates of several comorbid psychiatric disorders, including separation anxiety, generalized anxiety, and major depressive disorder, than OCS or unaffected controls. Moreover, the OCD group also scored higher than the SDQ, as well as on each of CBCL items rated by the parent. Our findings suggest that there is a psychopathological continuum between OCS and OCD in school-aged children. The presence of OCS is associated with functional impairment, which needs further investigation in longitudinal studies.

Income Inequality or Performance Gap? A Multilevel Study of School Violence in 52 Countries.

PURPOSE: The purpose of the study was to examine the association between income inequality and school violence and between the performance inequality and school violence in two international samples. METHODS: The study used data from Trends in International Mathematics and Science Study 2011 and from the Central Intelligence Agency of United States which combined information about academic performance and students' victimization (physical and social) for 269,456 fourth-grade students and 261,747 eighth-grade students, with gross domestic product and income inequality data in 52 countries. Ecological correlations tested associations between income inequality and victimization and between school performance inequality and victimization among countries. Multilevel ordinal regression and multilevel regression analyses tested the strength of these associations when controlling for socioeconomic and academic performance inequality at school level and family socioeconomic status and academic achievement at student level. RESULTS: Income inequality was associated with victimization rates in both fourth and eighth grade (r ≈ .60). Performance inequality shows stronger association with victimization among eighth graders (r ≈ .46) compared with fourth graders (r ≈ .30). Multilevel analyses indicate that both an increase in the income inequality in the country and school corresponds with more frequent physical and social victimization. On the other hand, an increase in the performance inequality at the system level shows no consistent association to victimization. However, school performance inequality seems related to an increase in both types of victimizations. CONCLUSIONS: Our results contribute to the finding that income inequality is a determinant of school violence. This result holds regardless of the national performance inequality between students.

School-based and community-based actions for scaling-up diagnosis and treatment of schistosomiasis toward its elimination in an endemic area of Brazil.

This study evaluated a school-based and a community-based scheme for diagnosis, treatment and follow-up of schistosomiasis mansoni among school-aged children in views of resolution CD49.R19 of the Pan American Health Organization toward the elimination of schistosomiasis as a public health problem in the Americas and subsequent commitments endorsed by the Brazilian government. The school-aged population from a representative municipality of the endemic area of Northeastern Brazil was randomly allocated to either school-based or community-based scheme. The two schemes were compared with regard to coverage of diagnosis by the Kato-Katz method (KK) at baseline, treatment of the positives for Schistosoma mansoni with praziquantel, treatment of the positives for soil-transmitted helminthes (STH) with mebendazole, as well as follow-up of treatment efficacy and reinfection assessed respectively at four and 12 months after treatment. Nutritional status of the positives for S. mansoni was assessed at baseline and re-assessed at 12 months after treatment. Coverage of diagnosis and treatment was satisfactory (>75%) in both schemes. Diagnosis coverage at baseline and at 12 months was significantly higher in the community scheme, whereas treatment coverage did not differ significantly between the two schemes either at baseline or at 12 months. The number of children covered per day was significantly higher in the schools than in the community at baseline but not at follow-up, when daily coverage was higher in the community. With regard to S. mansoni, overall treatment efficacy rate at four months was 90.8%, and reinfection rate at 12 months was 21.6%. For STH, overall treatment efficacy was 45.4% and reinfection, 32.8%. The nutritional status of the positives for S. mansoni at baseline did not change significantly at 12 months post-treatment. Actions targeted at this particularly vulnerable high-risk group should combine school-based and community-based interventions as well as preventive measures to reduce transmission.

Food intake and anthropometric evaluation in school-aged children of Buenos Aires / Ingesta alimentaria y evaluación antropométrica en niños escolares de Buenos Aires

Introduction. The main objectives of this study were to analyze food intake and to determine the prevalence of overweight and obesity in school-aged children. Population and Methods. Fifth-grade children from 80 randomly-selected public schools from the Buenos Aires metropolitan area were included. Data on food intake were collected using a 24-hour recall period and frequency of weekly consumption. Data on weight and height were also collected. Results. The sample was made up of 1673 children (854 girls and 819 boys), with an average age of 10.9 years old. The average calorie intake was 2316 kcal/day (±888) with an adequacy ratio of 115.8% in relation to the dietary reference intake. Of the total assessed children, 21.3% was overweight and 14.3% was obese. Mean intake of dietary fiber was 9 g/day (dietary reference intake: 28 g/day, 32.1% of adequacy). Only 2% of children complied with the recommended intake of vegetables and 17%, with the recommended intake of fruit. The most frequently consumed high calorie density foods were: soft drinks/juices, candies, sweet cookies and high fat seasonings and dressings. Conclusions. The high calorie intake, together with the prevalence of overweight and obesity in the studied population, justifies the need to implement nutrition education programs targeted at encouraging a healthier diet.(AU)

Introducción. Los principales objetivos de este estudio fueron analizar la ingesta alimentaria y determinar la prevalencia de sobrepeso y obesidad en niños escolares. Población y métodos. Se incluyeron niños de 5º grado provenientes de 80 escuelas públicas, aleatoriamente seleccionadas, del área metropolitana de Buenos Aires. Los datos de ingesta fueron recolectados a través del recordatorio de 24 h y de la frecuencia de consumo semanal. También se recabaron datos de peso y talla. Resultados. La muestra quedó constituida por 1673 niños (854 mujeres y 819 varones), con una edad promedio de 10,9 años. La ingesta calórica promedio fue de 2316 kcal/día (± 888) con un porcentaje de adecuación respecto de la ingesta dietética de referencia de 115,8%. El 21,3% de los niños evaluados presentó sobrepeso y el 14,3% obesidad. La ingesta media de fibra fue de 9 g/día (ingesta dietética de referencia: 28 g/día, 32,1% adecuación). Solo el 2% de los niños cumplió con la recomendación de ingesta de verduras y el 17% con la de frutas. Los alimentos de alta densidad calórica más frecuentemente consumidos fueron: gaseosas/jugos, golosinas, galletitas dulces y aderezos de alto contenido graso. Conclusiones. La elevada ingesta calórica hallada, sumada a la prevalencia de sobrepeso y obesidad en la población estudiada, justifican la necesidad de implementar programas de educación nutricional para estimular una alimentación más saludable.(AU)

Food intake and anthropometric evaluation in school-aged children of Buenos Aires / Ingesta alimentaria y evaluación antropométrica en niños escolares de Buenos Aires

Introduction. The main objectives of this study were to analyze food intake and to determine the prevalence of overweight and obesity in school-aged children. Population and Methods. Fifth-grade children from 80 randomly-selected public schools from the Buenos Aires metropolitan area were included. Data on food intake were collected using a 24-hour recall period and frequency of weekly consumption. Data on weight and height were also collected. Results. The sample was made up of 1673 children (854 girls and 819 boys), with an average age of 10.9 years old. The average calorie intake was 2316 kcal/day (±888) with an adequacy ratio of 115.8% in relation to the dietary reference intake. Of the total assessed children, 21.3% was overweight and 14.3% was obese. Mean intake of dietary fiber was 9 g/day (dietary reference intake: 28 g/day, 32.1% of adequacy). Only 2% of children complied with the recommended intake of vegetables and 17%, with the recommended intake of fruit. The most frequently consumed high calorie density foods were: soft drinks/juices, candies, sweet cookies and high fat seasonings and dressings. Conclusions. The high calorie intake, together with the prevalence of overweight and obesity in the studied population, justifies the need to implement nutrition education programs targeted at encouraging a healthier diet.

Introducción. Los principales objetivos de este estudio fueron analizar la ingesta alimentaria y determinar la prevalencia de sobrepeso y obesidad en niños escolares. Población y métodos. Se incluyeron niños de 5º grado provenientes de 80 escuelas públicas, aleatoriamente seleccionadas, del área metropolitana de Buenos Aires. Los datos de ingesta fueron recolectados a través del recordatorio de 24 h y de la frecuencia de consumo semanal. También se recabaron datos de peso y talla. Resultados. La muestra quedó constituida por 1673 niños (854 mujeres y 819 varones), con una edad promedio de 10,9 años. La ingesta calórica promedio fue de 2316 kcal/día (± 888) con un porcentaje de adecuación respecto de la ingesta dietética de referencia de 115,8%. El 21,3% de los niños evaluados presentó sobrepeso y el 14,3% obesidad. La ingesta media de fibra fue de 9 g/día (ingesta dietética de referencia: 28 g/día, 32,1% adecuación). Solo el 2% de los niños cumplió con la recomendación de ingesta de verduras y el 17% con la de frutas. Los alimentos de alta densidad calórica más frecuentemente consumidos fueron: gaseosas/jugos, golosinas, galletitas dulces y aderezos de alto contenido graso. Conclusiones. La elevada ingesta calórica hallada, sumada a la prevalencia de sobrepeso y obesidad en la población estudiada, justifican la necesidad de implementar programas de educación nutricional para estimular una alimentación más saludable.