Cristina Kuschnir | UERJ - Universidade do Estado do Rio de Janeiro / Rio de Janeiro State University (original) (raw)

Papers by Cristina Kuschnir

Resumo Fundamentos: A doença arterial coronariana é a principal causa de óbito no mundo e os paci... more Resumo Fundamentos: A doença arterial coronariana é a principal causa de óbito no mundo e os pacientes submetidos à cirurgia de revascularização miocárdica (CRVM) constituem o grupo de maior risco. Objetivo: Analisar aspectos epidemiológicos na CRVM ...

Boletim da Academia Nacional de Medicina, Dec 31, 2021

Jornal de Pediatria, 2021

OBJECTIVE To investigate the association between birth weight and excess weight among students ag... more OBJECTIVE To investigate the association between birth weight and excess weight among students aged 6-14 years, adjusted for life course confounding factors. METHODS Cross-sectional study with 6-14-year-old schoolchildren in 2010; 796 school children from two public schools. In addition, a sub-sample was selected using a case-cohort study approach. Sociodemographic, breastfeeding, food introduction, previous weight gain, family history, current clinical and behavioral variables as well as maternal variables related to pregnancy, were collected. Multivariable weighted logistic regression was used to evaluate the association between birth weight and overweight. All prevalent cases of overweight (n = 160) were selected to compose the case group and a random sub-sample of all students participating in the study (n = 276 students, of whom 88 were cases) were the control group. RESULTS An unadjusted 6% increase in the excess weight prevalence ratio (p-value = 0.004) was found for each 100 g increase in birth weight. With adjustment for age, sex and behavioral variables (models 1 and 2), the association of birth weight with excess weight was positive and statistically significant, but it was no longer significant in the final model (model 3) when clinical variables were considered. CONCLUSIONS Although some of the secondary associations were statistically significant, we could not identify a significant association between birthweight and excess weight in adolescents.

Tobacco Induced Diseases, 2018

Public Health Nutrition, 2020

Objective:To evaluate dietary fibre intake in Brazilian adolescents and its association with nutr... more Objective:To evaluate dietary fibre intake in Brazilian adolescents and its association with nutritional status.Design:This was a cross-sectional study including data from the Brazilian multicentre Study of Cardiovascular Risks in Adolescents (ERICA). Data analysed were geographic region, sex, age, nutritional status, sexual maturation stage, socioeconomic status, school type and level of physical activity. For nutritional status classification, BMI/age was used by sex. Dietary intake was assessed by 24-h recall. Dietary fibre intake was expressed in g/d, and adequacy was determined using dietary reference intake (DRI) values. Complex sample design was considered in statistical analysis, and logistic regression was used to estimate OR for fibre intake and nutritional status.Setting:Brazilian municipalities with more than 100 000 inhabitants.Participants:A total of 71 740 adolescents aged 12–17 years were included.Results:The average total dietary fibre intake was 19·1 g/d (95 % CI 1...

Jornal de Pediatria, 2018

Objective: Blood pressure (BP) references for Brazilian adolescents are lacking in the literature... more Objective: Blood pressure (BP) references for Brazilian adolescents are lacking in the literature. This study aims to investigate the normal range of office BP in a healthy, non-overweight Brazilian population of adolescents. Method: The Brazilian Study of Cardiovascular Risks in Adolescents (Portuguese acronym ''ERICA'') is a national school-based study that included adolescents (aged 12 through 17 years), enrolled in public and private schools, in cities with over 100,000 inhabitants, from all five Brazilian macro-regions. Adolescents' height and body mass index (BMI) were classified in percentiles according to age and gender, and reference curves from the World Health Organization were adopted. Three consecutive office BP measurements were taken with a validated oscillometric device using the appropriate cuff size. The mean values of the last two readings were used for analysis. Polynomial regression models relating BP, age, and height were applied.

Jornal de pediatria, Jan 27, 2018

To investigate the association between smoking and asthma, and possible associated factors in Bra... more To investigate the association between smoking and asthma, and possible associated factors in Brazilian adolescents. A cross-sectional, national, school-based study with adolescents aged 12-17 years, participants in the Study of Cardiovascular Risks in Adolescents (Estudo de Riscos Cardiovasculares em Adolescentes - ERICA). A total of 66,394 participants answered a self-administered questionnaire with questions about asthma, smoking, lifestyle and sociodemographic variables. Bivariate analysis between Current Asthma (CA) and Severe Asthma (SA) and the other study variables were performed using Chi-squared. Then, the crude and adjusted Prevalence Ratios (PR), and respective 95% Confidence Intervals (95% CI) of current asthma/severe asthma and smoking variables, corrected for sociodemographic and lifestyle variables, were estimated using generalized linear models with Poisson regression, logit link, and robust variance. The prevalence of current asthma and severe asthma were significa...

European journal of clinical nutrition, Jan 23, 2018

The association between active lifestyle components and vitamin D status in adolescents remains r... more The association between active lifestyle components and vitamin D status in adolescents remains relatively unexplored. We aimed to investigate independent and joint associations of moderate-to-vigorous physical activity (MVPA) and screen time with serum 25-hydroxyvitamin D [25(OH)D] concentrations in adolescents. This multicenter cross-sectional study involved 1152 Brazilian adolescents (age 12-17 years). Serum 25(OH)D was measured in a single laboratory and categorized as ≤20, 21-29, or ≥30 ng/mL. Demographic and lifestyle characteristics were assessed by self-reports. Ordered logistic regression was used to investigate potential associations of being physically active (MVPA ≥ 300 min/week) and excessive screen time (>2 h/day) with serum 25(OH)D concentrations. The prevalence of higher serum 25(OH)D concentrations (≥30 ng/mL) was 36.4%. In adjusted models, being physically active was associated with higher serum 25(OH)D concentrations only in boys [proportional odds ratio (POR) ...

The Journal of allergy and clinical immunology, Jan 7, 2018

Jornal de pediatria, Jan 18, 2018

To estimate the mean age at menarche and its association with nutritional status in Brazilian ado... more To estimate the mean age at menarche and its association with nutritional status in Brazilian adolescents. The study sample included female adolescents aged 12-17 who participated in a multicenter, school-based, country-wide, cross-sectional study entitled The Study of Cardiovascular Risk in Adolescents (Estudo de Riscos Cardiovasculares em Adolescentes [ERICA]). Mean and median ages at menarche in Brazil were estimated. The association of age at menarche with sociodemographic data and nutritional status were described as means and their respective 95% confidence intervals. Survival analysis was used to assess the age at menarche according to nutritional status categories and the log-rank test was used to compare the medians. Bivariate and multivariate analyses were performed using Cox regression to verify the association between menarche and other variables. A total of 73,624 students were evaluated, comprising 40,803 girls, of whom 37,390 reported menarche at a mean age of 11.71 y...

Journal of the American College of Nutrition, Jan 14, 2017

C-reactive protein is an acute-phase protein that has been found in association with adiposity an... more C-reactive protein is an acute-phase protein that has been found in association with adiposity and cardiovascular disease risk. In this paper, the objective was to assess the relationship of C-reactive protein to four anthropometric measurements: body mass index, waist-to-height ratio, C index, and waist circumference. A cross-sectional random sample of the Study of Cardiovascular Risk in Adolescents (Portuguese acronym "ERICA") was included in the study. The analysis was adjusted for the complex sampling design. Poisson regression models with robust variance were used to estimate a multivariate-adjusted prevalence rate ratio expressing the relationship of each anthropometric measure to C-reactive protein. We evaluated adolescents aged 12 to 17 years participating in the capital of Porto Alegre, Brazil. In all, 778 adolescents were included (60% female, 58% aged 15-17 years). Waist-to-height ratio was found to be the strongest adiposity marker associated with C-reactive pr...

Diabetes research and clinical practice, 2017

To evaluate the prevalence of elevated glycated haemoglobin (HbA1c) levels in a population of ado... more To evaluate the prevalence of elevated glycated haemoglobin (HbA1c) levels in a population of adolescents participating in the Study of Cardiovascular Risk in Adolescents. This is a school-based cross-sectional study based on a complex sample of adolescents 12-17years old representative at the national and macro-regional levels and for each Brazilian state capital. Blood was collected in schools and then evaluated in a single laboratory. HbA1c levels were considered elevated if ⩾5.7% (39mmol/mol) and were analyzed according to sex, age, macro-region, type of school, skin color, and nutritional status. Data from 37,804 adolescents were analyzed. The mean level of HbA1c was 5.4% (95%CI 5.4-5.4) (36mmol/mol [95%CI 36-36]), and 20.5% (95%CI 19.1-22.0) of adolescents presented values ⩾5.7% (⩾39mmol/mol). Among males, 23.6% (95%CI 21.8-25.6) showed elevated HbA1c levels compared to 17.5% (95%CI 15.9-19.2) observed in females. The prevalence of elevated levels of HbA1c was higher in adoles...

Cadernos de saude publica, Jan 18, 2017

The Study of Cardiovascular Risk in Adolescents (ERICA) is a pioneering study that aimed to asses... more The Study of Cardiovascular Risk in Adolescents (ERICA) is a pioneering study that aimed to assess the prevalence of cardiovascular risk factors, including metabolic syndrome components in Brazilian adolescents. This study aims to describe the methodological aspects related to blood collection as well as to report pertaining results of the preparation, transport, storage, and exams in ERICA. Exams in ERICA were performed in a single laboratory and blood samples were collected in schools in a standardized manner. Logistics involved air transportation of samples to the reference laboratory with controlled temperature since sample collection. The serum was stored in local biorepositories in four centers to be used in future analyses. During the study, 284,247 exams were performed and rate of participation in exams was 56.2%, thus involving 40,732 adolescents. From the total, 92.6% of the samples reached the reference laboratory maintaining the temperature between 0-10°C. No clinical si...

Revista Brasileira de Epidemiologia, 2016

RESUMO: Introdução: O Estudo de Riscos Cardiovasculares em Adolescentes (ERICA) é um estudo multi... more RESUMO: Introdução: O Estudo de Riscos Cardiovasculares em Adolescentes (ERICA) é um estudo multicêntrico nacional cujo objetivo é traçar o perfil de risco cardiovascular, incluindo obesidade, alterações do metabolismo lipídico, glicídico e da pressão arterial de cerca de 75 mil adolescentes brasileiros. Objetivo: Descrever o instrumento desenvolvido para coleta de dados de recordatório alimentar de 24 horas (REC24h) no ERICA e relatar os resultados obtidos no estudo piloto. Métodos: Para o desenvolvimento do programa computacional que norteou a entrevista para aplicação do REC24h utilizou-se a técnica denominada Multiple Pass Method . O REC24h-ERICA utiliza a base de dados composta por 1.626 itens alimentares incluindo as formas de preparo e as unidades de medidas caseiras pré-definidas. Os dados de recordatório alimentar são coletados através de entrevista e digitados diretamente no REC24h-ERICA, evitando assim o uso de papel. Resultados: O estudo piloto incluiu 1.367 adolescentes...

Revista Brasileira de Epidemiologia, 2016

RESUMO: Objetivo: Descrever a metodologia de um estudo sobre associações entre crescimento intrau... more RESUMO: Objetivo: Descrever a metodologia de um estudo sobre associações entre crescimento intrauterino restrito (CIUR) e prevalência de sobrepeso, obesidade e hipertensão arterial em escolares. Métodos: O estudo, conduzido em dois estágios, foi desenvolvido em 2 escolas municipais de Niterói (RJ) de junho a dezembro de 2010, sendo elegíveis todos os escolares de 6 a 14 anos. O primeiro estágio consistiu em um inquérito nutricional e de potenciais fatores de risco. Foram aplicados questionários aos responsáveis e adolescentes. Concomitantemente, foram selecionados os participantes de um estudo caso-controle, com casos prevalentes definidos como todos os escolares que apresentaram excesso de peso (Z-score de índice de massa corporal -IMC/idade/sexo > +1,00). O grupo controle consistiu em uma amostra aleatória da população de estudo do inquérito, o que permitiu o cálculo de razões de prevalências. Foram realizados bioimpedância elétrica, exames de sangue, ultrassonografia da caróti...

Revista de saúde pública, 2016

OBJECTIVE To estimate the prevalence of arterial hypertension and obesity and the population attr... more OBJECTIVE To estimate the prevalence of arterial hypertension and obesity and the population attributable fraction of hypertension that is due to obesity in Brazilian adolescents. METHODS Data from participants in the Brazilian Study of Cardiovascular Risks in Adolescents (ERICA), which was the first national school-based, cross-section study performed in Brazil were evaluated. The sample was divided into 32 geographical strata and clusters from 32 schools and classes, with regional and national representation. Obesity was classified using the body mass index according to age and sex. Arterial hypertension was defined when the average systolic or diastolic blood pressure was greater than or equal to the 95th percentile of the reference curve. Prevalences and 95% confidence intervals (95%CI) of arterial hypertension and obesity, both on a national basis and in the macro-regions of Brazil, were estimated by sex and age group, as were the fractions of hypertension attributable to obesi...

Revista de Saúde Pública, 2016

OBJECTIVE To estimate the prevalence of sexual initiation and contraceptive use at the last sexua... more OBJECTIVE To estimate the prevalence of sexual initiation and contraceptive use at the last sexual intercourse of Brazilian adolescents, according to sociodemographic features. METHODS The data were obtained from the Study of Cardiovascular Risks in Adolescents (ERICA), a national school-based cross-sectional study. We included 74,589 adolescents from 32 geographic strata (27 capitals and five sets of municipalities with more than 100,000 inhabitants of each of the five macro-regions of the Country). Information on sexual initiation and contraceptive use at the last sexual intercourse (male condom and oral contraceptive pill) has been used. We have estimated prevalence and confidence intervals (95%CI) considering sample weights according to sex, age, type of school, residence status, macro-region and capitals. RESULTS We observed that 28.1% (95%CI 27.0-29.2) of the adolescents had already initiated sexual life, with higher prevalence among those aged 17 years (56.4%, 95%CI 53.9-58.9...

Resumo Fundamentos: A doença arterial coronariana é a principal causa de óbito no mundo e os paci... more Resumo Fundamentos: A doença arterial coronariana é a principal causa de óbito no mundo e os pacientes submetidos à cirurgia de revascularização miocárdica (CRVM) constituem o grupo de maior risco. Objetivo: Analisar aspectos epidemiológicos na CRVM ...

Boletim da Academia Nacional de Medicina, Dec 31, 2021

Jornal de Pediatria, 2021

OBJECTIVE To investigate the association between birth weight and excess weight among students ag... more OBJECTIVE To investigate the association between birth weight and excess weight among students aged 6-14 years, adjusted for life course confounding factors. METHODS Cross-sectional study with 6-14-year-old schoolchildren in 2010; 796 school children from two public schools. In addition, a sub-sample was selected using a case-cohort study approach. Sociodemographic, breastfeeding, food introduction, previous weight gain, family history, current clinical and behavioral variables as well as maternal variables related to pregnancy, were collected. Multivariable weighted logistic regression was used to evaluate the association between birth weight and overweight. All prevalent cases of overweight (n = 160) were selected to compose the case group and a random sub-sample of all students participating in the study (n = 276 students, of whom 88 were cases) were the control group. RESULTS An unadjusted 6% increase in the excess weight prevalence ratio (p-value = 0.004) was found for each 100 g increase in birth weight. With adjustment for age, sex and behavioral variables (models 1 and 2), the association of birth weight with excess weight was positive and statistically significant, but it was no longer significant in the final model (model 3) when clinical variables were considered. CONCLUSIONS Although some of the secondary associations were statistically significant, we could not identify a significant association between birthweight and excess weight in adolescents.

Tobacco Induced Diseases, 2018

Public Health Nutrition, 2020

Objective:To evaluate dietary fibre intake in Brazilian adolescents and its association with nutr... more Objective:To evaluate dietary fibre intake in Brazilian adolescents and its association with nutritional status.Design:This was a cross-sectional study including data from the Brazilian multicentre Study of Cardiovascular Risks in Adolescents (ERICA). Data analysed were geographic region, sex, age, nutritional status, sexual maturation stage, socioeconomic status, school type and level of physical activity. For nutritional status classification, BMI/age was used by sex. Dietary intake was assessed by 24-h recall. Dietary fibre intake was expressed in g/d, and adequacy was determined using dietary reference intake (DRI) values. Complex sample design was considered in statistical analysis, and logistic regression was used to estimate OR for fibre intake and nutritional status.Setting:Brazilian municipalities with more than 100 000 inhabitants.Participants:A total of 71 740 adolescents aged 12–17 years were included.Results:The average total dietary fibre intake was 19·1 g/d (95 % CI 1...

Jornal de Pediatria, 2018

Objective: Blood pressure (BP) references for Brazilian adolescents are lacking in the literature... more Objective: Blood pressure (BP) references for Brazilian adolescents are lacking in the literature. This study aims to investigate the normal range of office BP in a healthy, non-overweight Brazilian population of adolescents. Method: The Brazilian Study of Cardiovascular Risks in Adolescents (Portuguese acronym ''ERICA'') is a national school-based study that included adolescents (aged 12 through 17 years), enrolled in public and private schools, in cities with over 100,000 inhabitants, from all five Brazilian macro-regions. Adolescents' height and body mass index (BMI) were classified in percentiles according to age and gender, and reference curves from the World Health Organization were adopted. Three consecutive office BP measurements were taken with a validated oscillometric device using the appropriate cuff size. The mean values of the last two readings were used for analysis. Polynomial regression models relating BP, age, and height were applied.

Jornal de pediatria, Jan 27, 2018

To investigate the association between smoking and asthma, and possible associated factors in Bra... more To investigate the association between smoking and asthma, and possible associated factors in Brazilian adolescents. A cross-sectional, national, school-based study with adolescents aged 12-17 years, participants in the Study of Cardiovascular Risks in Adolescents (Estudo de Riscos Cardiovasculares em Adolescentes - ERICA). A total of 66,394 participants answered a self-administered questionnaire with questions about asthma, smoking, lifestyle and sociodemographic variables. Bivariate analysis between Current Asthma (CA) and Severe Asthma (SA) and the other study variables were performed using Chi-squared. Then, the crude and adjusted Prevalence Ratios (PR), and respective 95% Confidence Intervals (95% CI) of current asthma/severe asthma and smoking variables, corrected for sociodemographic and lifestyle variables, were estimated using generalized linear models with Poisson regression, logit link, and robust variance. The prevalence of current asthma and severe asthma were significa...

European journal of clinical nutrition, Jan 23, 2018

The association between active lifestyle components and vitamin D status in adolescents remains r... more The association between active lifestyle components and vitamin D status in adolescents remains relatively unexplored. We aimed to investigate independent and joint associations of moderate-to-vigorous physical activity (MVPA) and screen time with serum 25-hydroxyvitamin D [25(OH)D] concentrations in adolescents. This multicenter cross-sectional study involved 1152 Brazilian adolescents (age 12-17 years). Serum 25(OH)D was measured in a single laboratory and categorized as ≤20, 21-29, or ≥30 ng/mL. Demographic and lifestyle characteristics were assessed by self-reports. Ordered logistic regression was used to investigate potential associations of being physically active (MVPA ≥ 300 min/week) and excessive screen time (>2 h/day) with serum 25(OH)D concentrations. The prevalence of higher serum 25(OH)D concentrations (≥30 ng/mL) was 36.4%. In adjusted models, being physically active was associated with higher serum 25(OH)D concentrations only in boys [proportional odds ratio (POR) ...

The Journal of allergy and clinical immunology, Jan 7, 2018

Jornal de pediatria, Jan 18, 2018

To estimate the mean age at menarche and its association with nutritional status in Brazilian ado... more To estimate the mean age at menarche and its association with nutritional status in Brazilian adolescents. The study sample included female adolescents aged 12-17 who participated in a multicenter, school-based, country-wide, cross-sectional study entitled The Study of Cardiovascular Risk in Adolescents (Estudo de Riscos Cardiovasculares em Adolescentes [ERICA]). Mean and median ages at menarche in Brazil were estimated. The association of age at menarche with sociodemographic data and nutritional status were described as means and their respective 95% confidence intervals. Survival analysis was used to assess the age at menarche according to nutritional status categories and the log-rank test was used to compare the medians. Bivariate and multivariate analyses were performed using Cox regression to verify the association between menarche and other variables. A total of 73,624 students were evaluated, comprising 40,803 girls, of whom 37,390 reported menarche at a mean age of 11.71 y...

Journal of the American College of Nutrition, Jan 14, 2017

C-reactive protein is an acute-phase protein that has been found in association with adiposity an... more C-reactive protein is an acute-phase protein that has been found in association with adiposity and cardiovascular disease risk. In this paper, the objective was to assess the relationship of C-reactive protein to four anthropometric measurements: body mass index, waist-to-height ratio, C index, and waist circumference. A cross-sectional random sample of the Study of Cardiovascular Risk in Adolescents (Portuguese acronym "ERICA") was included in the study. The analysis was adjusted for the complex sampling design. Poisson regression models with robust variance were used to estimate a multivariate-adjusted prevalence rate ratio expressing the relationship of each anthropometric measure to C-reactive protein. We evaluated adolescents aged 12 to 17 years participating in the capital of Porto Alegre, Brazil. In all, 778 adolescents were included (60% female, 58% aged 15-17 years). Waist-to-height ratio was found to be the strongest adiposity marker associated with C-reactive pr...

Diabetes research and clinical practice, 2017

To evaluate the prevalence of elevated glycated haemoglobin (HbA1c) levels in a population of ado... more To evaluate the prevalence of elevated glycated haemoglobin (HbA1c) levels in a population of adolescents participating in the Study of Cardiovascular Risk in Adolescents. This is a school-based cross-sectional study based on a complex sample of adolescents 12-17years old representative at the national and macro-regional levels and for each Brazilian state capital. Blood was collected in schools and then evaluated in a single laboratory. HbA1c levels were considered elevated if ⩾5.7% (39mmol/mol) and were analyzed according to sex, age, macro-region, type of school, skin color, and nutritional status. Data from 37,804 adolescents were analyzed. The mean level of HbA1c was 5.4% (95%CI 5.4-5.4) (36mmol/mol [95%CI 36-36]), and 20.5% (95%CI 19.1-22.0) of adolescents presented values ⩾5.7% (⩾39mmol/mol). Among males, 23.6% (95%CI 21.8-25.6) showed elevated HbA1c levels compared to 17.5% (95%CI 15.9-19.2) observed in females. The prevalence of elevated levels of HbA1c was higher in adoles...

Cadernos de saude publica, Jan 18, 2017

The Study of Cardiovascular Risk in Adolescents (ERICA) is a pioneering study that aimed to asses... more The Study of Cardiovascular Risk in Adolescents (ERICA) is a pioneering study that aimed to assess the prevalence of cardiovascular risk factors, including metabolic syndrome components in Brazilian adolescents. This study aims to describe the methodological aspects related to blood collection as well as to report pertaining results of the preparation, transport, storage, and exams in ERICA. Exams in ERICA were performed in a single laboratory and blood samples were collected in schools in a standardized manner. Logistics involved air transportation of samples to the reference laboratory with controlled temperature since sample collection. The serum was stored in local biorepositories in four centers to be used in future analyses. During the study, 284,247 exams were performed and rate of participation in exams was 56.2%, thus involving 40,732 adolescents. From the total, 92.6% of the samples reached the reference laboratory maintaining the temperature between 0-10°C. No clinical si...

Revista Brasileira de Epidemiologia, 2016

RESUMO: Introdução: O Estudo de Riscos Cardiovasculares em Adolescentes (ERICA) é um estudo multi... more RESUMO: Introdução: O Estudo de Riscos Cardiovasculares em Adolescentes (ERICA) é um estudo multicêntrico nacional cujo objetivo é traçar o perfil de risco cardiovascular, incluindo obesidade, alterações do metabolismo lipídico, glicídico e da pressão arterial de cerca de 75 mil adolescentes brasileiros. Objetivo: Descrever o instrumento desenvolvido para coleta de dados de recordatório alimentar de 24 horas (REC24h) no ERICA e relatar os resultados obtidos no estudo piloto. Métodos: Para o desenvolvimento do programa computacional que norteou a entrevista para aplicação do REC24h utilizou-se a técnica denominada Multiple Pass Method . O REC24h-ERICA utiliza a base de dados composta por 1.626 itens alimentares incluindo as formas de preparo e as unidades de medidas caseiras pré-definidas. Os dados de recordatório alimentar são coletados através de entrevista e digitados diretamente no REC24h-ERICA, evitando assim o uso de papel. Resultados: O estudo piloto incluiu 1.367 adolescentes...

Revista Brasileira de Epidemiologia, 2016

RESUMO: Objetivo: Descrever a metodologia de um estudo sobre associações entre crescimento intrau... more RESUMO: Objetivo: Descrever a metodologia de um estudo sobre associações entre crescimento intrauterino restrito (CIUR) e prevalência de sobrepeso, obesidade e hipertensão arterial em escolares. Métodos: O estudo, conduzido em dois estágios, foi desenvolvido em 2 escolas municipais de Niterói (RJ) de junho a dezembro de 2010, sendo elegíveis todos os escolares de 6 a 14 anos. O primeiro estágio consistiu em um inquérito nutricional e de potenciais fatores de risco. Foram aplicados questionários aos responsáveis e adolescentes. Concomitantemente, foram selecionados os participantes de um estudo caso-controle, com casos prevalentes definidos como todos os escolares que apresentaram excesso de peso (Z-score de índice de massa corporal -IMC/idade/sexo > +1,00). O grupo controle consistiu em uma amostra aleatória da população de estudo do inquérito, o que permitiu o cálculo de razões de prevalências. Foram realizados bioimpedância elétrica, exames de sangue, ultrassonografia da caróti...

Revista de saúde pública, 2016

OBJECTIVE To estimate the prevalence of arterial hypertension and obesity and the population attr... more OBJECTIVE To estimate the prevalence of arterial hypertension and obesity and the population attributable fraction of hypertension that is due to obesity in Brazilian adolescents. METHODS Data from participants in the Brazilian Study of Cardiovascular Risks in Adolescents (ERICA), which was the first national school-based, cross-section study performed in Brazil were evaluated. The sample was divided into 32 geographical strata and clusters from 32 schools and classes, with regional and national representation. Obesity was classified using the body mass index according to age and sex. Arterial hypertension was defined when the average systolic or diastolic blood pressure was greater than or equal to the 95th percentile of the reference curve. Prevalences and 95% confidence intervals (95%CI) of arterial hypertension and obesity, both on a national basis and in the macro-regions of Brazil, were estimated by sex and age group, as were the fractions of hypertension attributable to obesi...

Revista de Saúde Pública, 2016

OBJECTIVE To estimate the prevalence of sexual initiation and contraceptive use at the last sexua... more OBJECTIVE To estimate the prevalence of sexual initiation and contraceptive use at the last sexual intercourse of Brazilian adolescents, according to sociodemographic features. METHODS The data were obtained from the Study of Cardiovascular Risks in Adolescents (ERICA), a national school-based cross-sectional study. We included 74,589 adolescents from 32 geographic strata (27 capitals and five sets of municipalities with more than 100,000 inhabitants of each of the five macro-regions of the Country). Information on sexual initiation and contraceptive use at the last sexual intercourse (male condom and oral contraceptive pill) has been used. We have estimated prevalence and confidence intervals (95%CI) considering sample weights according to sex, age, type of school, residence status, macro-region and capitals. RESULTS We observed that 28.1% (95%CI 27.0-29.2) of the adolescents had already initiated sexual life, with higher prevalence among those aged 17 years (56.4%, 95%CI 53.9-58.9...