Sheila Maria Alvim Matos

Prevalence, awareness, treatment and influence of socioeconomic variables on control of high blood pressure : results of the ELSA-Brasil study

High blood pressure (HBP) is the leading risk factor for years of life lost in Brazil. Factors associated with HBP awareness, treatment and control need to be understood better. Our aim is to estimate prevalence, awareness, and types of anti-hypertensive treatment and to investigate the association of HBP control with social position. Data of 15,103 (54% female) civil servants in six Brazilian state capitals collected at the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) baseline (2008-2010) were used to estimate prevalence and cross-sectional association of HBP control with education, per capita family income and self-reported race, using multiple logistic regression. Blood pressure was measured by the oscillometric method. 35.8% were classified as presenting HBP; 76.8% of these used anti-hypertensive medication. Women were more aware than men (84.8% v. 75.8%) and more often using medication (83.1% v. 70.7%). Adjusted HBP prevalence was, in ascending order, Whites (30.3%), Browns (38.2%) and Blacks (49.3%). The therapeutic schemes most used were angiotensin-converting enzyme inhibitors, in isolation (12.4%) or combined with diuretics (13.3%). Among those in drug treatment, controlled blood pressure was more likely in the (postgraduate) higher education group than among participants with less than secondary school education (PR = 1.21; 95% CI: 1.14–1.28), and among Asian (PR = 1.21; 95% CI: 1.12–1.32) and ‘Whites (PR = 1.19; 95% CI: 1.12–1.26) compared to Blacks. Socioeconomic and racial inequality—as measured by different indicators—are strongly associated with HBP control, beyond the expected influence of health services access.

Validation of a food frequency questionnaire for children and adolescents aged 4 to 11 years living in Salvador, Bahia

OBJECTIVE To assess the validity of a food frequency questionnaire (FFQ) by applying it to children and adolescents living in Salvador, Bahia. METHODS The validity of this FFQ with 98 food items was investigated among 108 children and adolescents who were selected from a sample of 1445 that had been planned for a study on the risk factors for asthma and other allergic diseases. The adults responsible for these children and adolescents gave responses for a 24-hour recall (R24h) and an FFQ. The average energy and nutrient values from the FFQ were compared with those from the R24h by means of the paired t test and Pearson correlation coefficients. The concordance was evaluated using the Bland-Altman method and kappa statistics. RESULTS The energy and nutrient intake estimated using the FFQ was significantly higher than what was obtained using the R24h. The correlation coefficients adjusted for energy were statistically significant for protein, fat, vitamin C and zinc. The weighted kappa values ranged from 0.06 for vitamin A (p = 0.24) to 0.34 for energy (p < 0.00). The results from the Bland-Altman plots for lipid, protein and zinc showed the most significant validity parameters, and zinc was found to show the best concordance. CONCLUSION The results suggest that the FFQ showed satisfactory validity for use in studies involving children and adolescents.

Giardia duodenalis infection and anthropometric status in preschoolers in Salvador, Bahia State, Brazil

The aim of this study was to estimate the association between Giardia duodenalis infection and anthropometric deficits, as measured by weight-for-age and height-for-age. This cross-sectional study included 629 children from 12 to 48 months of age, selected from 30 geographic areas in the city of Salvador, Bahia State, Brazil. Poisson regression and linear regression were used for the multivariate statistical analyses. G. duodenalis was diagnosed in 13.5% of the children. The childrens breastfeeding duration and living conditions (garbage collection and paved streets or sidewalks) modified the effect of G. duodenalis infection on anthropometric status. Among infected children, there were statistically significant associations between weight deficit and shorter breastfeeding (PR = 2.22; 95%CI: 1.56-3.14) and inadequate paving of streets and sidewalks (PR = 2.00; 95%CI: 1.37-2.92), while height deficit was associated with deficient public garbage collection (PR = 2.21; 95%CI: 1.31-2.51). In the linear regression, the association with the anthropometric indicators remained positive and statistically significant. The childs unhealthy living environment aggravated the negative effect of G. duodenalis infection on anthropometric status, and breastfeeding was a protective factor in the outcome.The aim of this study was to estimate the association between Giardia duodenalis infection and anthropometric deficits, as measured by weight-for-age and height-for-age. This cross-sectional study included 629 children from 12 to 48 months of age, selected from 30 geographic areas in the city of Salvador, Bahia State, Brazil. Poisson regression and linear regression were used for the multivariate statistical analyses. G. duodenalis was diagnosed in 13.5% of the children. The childrens breastfeeding duration and living conditions (garbage collection and paved streets or sidewalks) modified the effect of G. duodenalis infection on anthropometric status. Among infected children, there were statistically significant associations between weight deficit and shorter breastfeeding (PR=2.22; 95%CI: 1.56-3.14) and inadequate paving of streets and sidewalks (PR=2.00; 95%CI: 1.37-2.92), while height deficit was associated with deficient public garbage collection (PR=2.21; 95%CI: 1.31-2.51). In the linear regression, the association with the anthropometric indicators remained positive and statistically significant. The childs unhealthy living environment aggravated the negative effect of G. duodenalis infection on anthropometric status, and breastfeeding was a protective factor in the outcome.

Maternal obesity, environmental factors, cesarean delivery and breastfeeding as determinants of overweight and obesity in children: results from a cohort

BackgroundOverweight and obesity are a public health problem with a multifactorial aetiology. The objective of this study was to evaluate risk factors for overweight and obesity in children at 6 years of age, including type of delivery and breastfeeding.MethodsThis study relates to a cohort of 672 mother-baby pairs who have been followed from birth up to 6 years of age. The sample included mothers and infants seen at all ten maternity units in a large Brazilian city. Genetic, socioeconomic, demographic variables and postnatal characteristics were analyzed. The outcome analyzed was overweight and/or obesity defined as a body mass index greater than or equal to +1 z-score. The sample was stratified by breastfeeding duration, and a descriptive analysis was performed using a hierarchical logistic regression. P-values of <0.05 were considered significant.ResultsPrevalence rates (PR) of overweight and obesity among the children were 15.6% and 12.9%, respectively. Among the subset of breastfed children, factors associated with the outcome were maternal overweight and/or obesity (PR 1.92; 95% confidence interval “95% CI” 1.15–3.24) and lower income (PR 0.50; 95% CI 0.29–0.85). Among children who had not been breastfed or had been breastfed for shorter periods (less than 12 months), predictors were mothers with lower levels of education (PR 0.39; 95% CI 0.19–0.78), working mothers (PR 1.83; 95% CI 1.05–3.21), caesarean delivery (PR 1.98; 95% CI 1.14 – 3.50) and maternal obesity (PR 3.05; 95% CI 1.81 – 5.25).ConclusionsMaternal obesity and caesarean delivery were strongly associated with childhood overweight and/or obesity. Lower family income and lower levels of education were identified as protective factors. Breastfeeding duration appeared to modify the association between overweight/obesity and the other predictors studied.

The prevalence of wheezing and its association with body mass index and abdominal obesity in children.

Objective. To evaluate the relative importance of body mass index (BMI) and abdominal obesity in the prevalence of wheezing in Brazilian children. Materials and methods. This is a cross-sectional study of male and female students, 6–12 years old, from the public elementary schools of São Francisco do Conde, Bahia, Northeast Brazil. Reports of wheezing in the past 12 months were collected using a questionnaire from the International Study of Asthma and Allergies in Childhood Program (ISAAC) phase III, adapted to Portuguese. Anthropometric, demographic, and socioeconomic information was collected. Multivariate logistic regression analyses were used to assess the associations of interest. Results. Of the children surveyed, 10.6% reported wheezing. Excess weight was observed in 16.2%, 10.5%, and 7.9% of the sample, measured by BMI, waist circumference (WC), and the waist-to-height ratio (WHtR), respectively. The percentage of patients with wheezing attributable to BMI ≥ 85th percentile (8.2%) slightly exceeded those identified with abdominal obesity, WC ≥ 80th percentile (7.3%) and WHtR > 0.5 (7.1%). Conclusion. The results suggest that an excess of fat deposits, either in the abdominal region or elsewhere in the body, increased the risk of wheezing. Since obesity is an important public health problem worldwide, control of this problem may partially reduce the occurrence of wheezing in youth.

Velocidade de ganho de peso nos primeiros anos de vida e excesso de peso entre 5-11 anos de idade, Salvador, Bahia, Brasil

Overweight children are more prone to become overweight or obese adults. The most effective prevention is intervention in early childhood. We analyzed the association between early weight gain and overweight/obesity in 1,056 children under 11 years of age. Data were collected on lifestyle, sanitation, socioeconomic status, birth weight, and breastfeeding. Weight gain from birth until different age brackets ( 12 to 18, > 18 to 24, and > 24 to 60 months) was considered a continuous variable in z-scores. Overweight was defined as body mass index (BMI) > +1 z-score, based on 2006 and 2007 World Health Organization (WHO) guidelines. Poisson regression and linear regression were used in the multivariate statistical analysis. Weight gain rate was associated with BMI, and overweight or obesity in the 5-11-year age bracket increased twofold for each unit increase in the weight gain standard deviation between 24 and 60 months of age (RR = 2.08; 95%CI: 1.87-2.32). For all early childhood age brackets, there was an association between rapid weight gain and subsequent overweight or obesity.

Padrões alimentares de crianças menores de cinco anos de idade residentes na capital e em municípios da Bahia, Brasil, 1996 e 1999/2000

This cross-sectional study included 3,817 preschool children, of whom 1,770 in Salvador, Bahia State, Brazil, and 2,047 in urban and rural areas from nine other municipalities (counties) in the same State. The study used 24-hour recall and principal components analysis to identify and compare dietary patterns. The sample was stratified by age and area. In the first six months of life, breast milk composed the second and third patterns, with positive loadings for children in all 10 municipalities. For children under 17 months of age, pattern 1 was characterized by cows milk, flour, and sugar, except in rural areas. Pattern 2 was similar for children aged 6-17 months and consisted of bread/cookies, rice, beans, and meat. For children 18-23 months of age in urban areas, pattern 1 showed negative loadings for sugar, cows milk, and flour. In children over 24 months of age, fruits were not part of the first pattern. The study showed low consumption of milk and low variety of fruits and vegetables. This food consumption profile indicates the need for early interventions to promote healthy eating habits.Estudo transversal com 3.817 pre-escolares, 1.770 residentes em Salvador, Bahia, Brasil, e 2.047 nas areas urbana e rural de 10 municipios baianos. Utilizou-se recordatorio de 24 horas (R24h) e empregou-se analise fatorial por componentes principais com objetivo de identificar e comparar os principais padroes alimentares dessas criancas. Estratificou-se a amostra por idade e area. Antes dos seis meses de vida o leite materno compos o 2o e 3o padroes com carga positiva para criancas dos dez municipios. Para menores de 17 meses, o padrao 1 foi caracterizado por leite de vaca, farinhas e acucares. Em areas urbanas, pao/biscoito, arroz, feijao e carne integraram o padrao 2 aos 6-17 meses. Aos 18-23 meses, o padrao 1 apresentou carga negativa para acucares, leite de vaca e farinhas, exceto na area rural. Frutas nao fizeram parte do padrao 1 no grupo de 24 meses e mais. Observou-se baixo consumo de leite materno e pouca variacao de frutas e legumes a partir dos seis meses. Tal perfil de consumo alimentar indica a necessidade de intervencoes cada vez mais precoces para promocao de habitos alimentares saudaveis.

Factors associated with leisure time physical activity among ELSA-Brasil participants: Ecological model.

The main objective of the study was identify the prevalence and factors associated with leisure time physical activity (LTPA) in adult participants of the Longitudinal Study of Adult Health (ELSA-Brasil). The LTPA was measured using the International Physical Activity Questionnaire (IPAQ), long version. A hierarchical ecological model was built with the possible factors associated with LTPA distributed across blocks. We estimated crude and adjusted odds ratios (ORs) and 95% confidence intervals (95% CIs) using logistic regression. In men, being more educated, having a high family income, living in environments with conditions and opportunities for PA, being retired and being overweight were positively associated, while current smoking, obesity and abdominal obesity were associated negatively with the LTPA. Among women, being over 60years old, being more educated, having a high family income, living in an environment with conditions and opportunities for PA practice and being retired were positively associated, while being overweight, obese and having abdominal obesity were associated negatively with the LTPA. The proposed ecological model explains the LTPA through the social, physical and personal environment and highlights gender differences in physical activity.

Dietary patterns of children under five years of age living in the State capital and other counties of Bahia State, Brazil, 1996 and 1999-2000

This cross-sectional study included 3,817 preschool children, of whom 1,770 in Salvador, Bahia State, Brazil, and 2,047 in urban and rural areas from nine other municipalities (counties) in the same State. The study used 24-hour recall and principal components analysis to identify and compare dietary patterns. The sample was stratified by age and area. In the first six months of life, breast milk composed the second and third patterns, with positive loadings for children in all 10 municipalities. For children under 17 months of age, pattern 1 was characterized by cows milk, flour, and sugar, except in rural areas. Pattern 2 was similar for children aged 6-17 months and consisted of bread/cookies, rice, beans, and meat. For children 18-23 months of age in urban areas, pattern 1 showed negative loadings for sugar, cows milk, and flour. In children over 24 months of age, fruits were not part of the first pattern. The study showed low consumption of milk and low variety of fruits and vegetables. This food consumption profile indicates the need for early interventions to promote healthy eating habits.Estudo transversal com 3.817 pre-escolares, 1.770 residentes em Salvador, Bahia, Brasil, e 2.047 nas areas urbana e rural de 10 municipios baianos. Utilizou-se recordatorio de 24 horas (R24h) e empregou-se analise fatorial por componentes principais com objetivo de identificar e comparar os principais padroes alimentares dessas criancas. Estratificou-se a amostra por idade e area. Antes dos seis meses de vida o leite materno compos o 2o e 3o padroes com carga positiva para criancas dos dez municipios. Para menores de 17 meses, o padrao 1 foi caracterizado por leite de vaca, farinhas e acucares. Em areas urbanas, pao/biscoito, arroz, feijao e carne integraram o padrao 2 aos 6-17 meses. Aos 18-23 meses, o padrao 1 apresentou carga negativa para acucares, leite de vaca e farinhas, exceto na area rural. Frutas nao fizeram parte do padrao 1 no grupo de 24 meses e mais. Observou-se baixo consumo de leite materno e pouca variacao de frutas e legumes a partir dos seis meses. Tal perfil de consumo alimentar indica a necessidade de intervencoes cada vez mais precoces para promocao de habitos alimentares saudaveis.

Association between Body Image Dissatisfaction and Self-Rated Health, as Mediated by Physical Activity and Eating Habits: Structural Equation Modelling in ELSA-Brasil

This study investigated whether the association between body image dissatisfaction and poor self-rated health is mediated by insufficient physical activity and unhealthy eating habits. The participants were 6727 men and 8037 women from the baseline (2008–2010) of the Longitudinal Study of Adult Health (Estudo Longitudinal de Saúde do Adulto, ELSA-Brasil). Structural equation modelling was used. Associations were found between body image dissatisfaction and poor self-rated health in both sexes. Insufficient physical activity was a mediator. However, unhealthy eating habits were found to exert a mediator effect only via insufficient physical activity. Body image dissatisfaction was found to associate, both directly and possibly indirectly, with poor self-rated health, mediated by insufficient physical activity and unhealthy eating habits. Accordingly, encouraging physical activity and healthy eating can contribute to reducing body image dissatisfaction and favour better self-rated health.