scholarly journals General methodological aspects in the Brazilian National Survey on Child Nutrition (ENANI-2019): a population-based household survey

2021 ◽  
Vol 37 (8) ◽  
Author(s):  
Nadya Helena Alves-Santos ◽  
Inês Rugani Ribeiro de Castro ◽  
Luiz Antonio dos Anjos ◽  
Elisa Maria de Aquino Lacerda ◽  
Paula Normando ◽  
...  
Keyword(s):  
Nutritional Status ◽  
National Survey ◽  
Child Nutrition ◽  
Household Survey ◽  
Federal District ◽  
Population Based ◽  
Sample Collection ◽  
Nutrition Policies ◽  
Methodological Aspects ◽  
And Control

Abstract: This article aims to present general methodological aspects of the Brazilian National Survey on Child Nutrition (ENANI-2019), from the conception of the study design to details of the data collection. This is a household-based population survey with a sample calculated at 15,000 households to identify children under five years of age, conducted in 123 municipalities in Brazil’s 26 states and the Federal District. ENANI-2019 includes data on breastfeeding and dietary intake; anthropometric nutritional status of all children and their biological mothers; and nutritional status concerning the following micronutrients: iron (hemoglobin and ferritin), zinc, selenium, and vitamins A, B1, B6, B12, D, E, and folic acid of children from 6 to 59 months of age. A total of 193,212 households were visited, of which 19,951 were eligible, and 12,524 were included in the study. A total of 14,558 children were studied, of whom 13,990 (96.1%) and 13,921 (95.6%) had their body mass and length/stature measured, respectively, and 14,541 (99.9%) underwent 24-hour dietary recalls (24HR). Of the 12,598 children eligible for blood sample collection, 8,739 (69.3%) had at least one laboratory parameter measured. Data were collected from February 2019 to March 2020, when the survey was interrupted due to the COVID-19 pandemic. The evidence produced by the ENANI-2019 survey can back the formulation, follow-up, and/or reorientation of food and nutrition policies such as the promotion of breastfeeding and healthy eating and the prevention and control of different forms of malnutrition.

scholarly journals Methodological aspects of the anthropometric assessment in the Brazilian National Survey on Child Nutrition (ENANI-2019): a population-based household survey

2021 ◽  
Vol 37 (8) ◽  
Author(s):  
Luiz Antonio dos Anjos ◽  
Haroldo da Silva Ferreira ◽  
Nadya Helena Alves-Santos ◽  
Maiara Brusco de Freitas ◽  
Cristiano Siqueira Boccolini ◽  
...  
Keyword(s):  
Nutritional Status ◽  
Body Mass ◽  
National Survey ◽  
Child Nutrition ◽  
Household Survey ◽  
Population Based ◽  
Anthropometric Measurements ◽  
Under Five ◽  
Methodological Aspects ◽  
Anthropometric Assessment

Abstract: The article presents methodological aspects of anthropometric assessment of nutritional status in children under five years of age and their biological mothers. It discusses the strategies used for training and data collection in the Brazilian National Survey on Child Nutrition (ENANI-2019). ENANI-2019 is a population-based household survey conducted in 123 municipalities in Brazil’s 26 states and the Federal District. The anthropometric measurements were body mass and length/stature. The equipment was purchased according to its measurement capacity and precision, portability, and cost-benefit ratio after an extensive market search. The study used internationally established procedures described in manuals, videos, and support material developed for the study by a group of experts. The interviewers were trained to perform the anthropometric measurements and were assessed according to technical measurement error, which was considered adequate (0.30cm) for the children’s length/stature measurements. Measurement errors were identified, and the interviewers were retrained when necessary. Of the 14,558 children in the sample, body mass and length/stature measurements were taken in duplicate in 13,835 and 13,693 children, respectively. The standardized methodological aspects will be helpful in future population studies and were essential for obtaining greater reliability in the data for generating current evidence on the anthropometric assessment of the nutritional status of Brazilian children under five years of age, allowing new perspectives for public policy development.

scholarly journals Methodological aspects of the micronutrient assessment in the Brazilian National Survey on Child Nutrition (ENANI-2019): a population-based household survey

2021 ◽  
Vol 37 (8) ◽  
Author(s):  
Inês Rugani Ribeiro de Castro ◽  
Paula Normando ◽  
Nadya Helena Alves-Santos ◽  
Flávia Fioruci Bezerra ◽  
Marta Citelli ◽  
...  
Keyword(s):  
Folic Acid ◽  
National Survey ◽  
Child Nutrition ◽  
Household Survey ◽  
Federal District ◽  
Lessons Learned ◽  
Clinical Test ◽  
Laboratory Assessment ◽  
Blood Samples ◽  
Methodological Aspects

This article aims to present methodological aspects on the collection, analyses, coverage, challenges, and the lessons learned from laboratory assessment of micronutrients on the Brazilian National Survey on Child Nutrition (ENANI-2019). This is a household survey on a probability sample of children under five years of age from 123 Brazilian municipalities in all 26 states and the Federal District. Blood samples were drawn by venipuncture at the homes of children 6 to 59 months of age. This procedure was performed by experienced phlebotomists from the laboratories located in the selected municipalities and scheduled in advance. Blood and serum levels were measured for biomarkers of nutritional status, using the services of a clinical test laboratory with nationwide coverage, for the following micronutrients: iron (hemoglobin and ferritin), zinc, selenium, folic acid, and vitamins A, B1, B6, B12, D, and E. C-reactive protein was analyzed as a marker of inflammation. A barcode identifier was used to track the blood samples and to link the biochemical test results to the other data collected in the survey. A total of 14,558 children were studied. Of the 12,598 eligible children, 8,829 (70.1%) had blood samples drawn. Of the total number of children who had samples drawn, 91.8% (n = 8,025) have results for at least nine of the 12 analyses performed. Coverage of the analysis varied from 95% (for vitamins A and E) to 84.2% (for folic acid). Aliquots of whole blood and serum were stored in a biorepository for future analyses. The results of this pioneering study in the country will back the formulation and, when necessary, the reorientation of public policies in food and nutrition.

scholarly journals Sampling plan of the Brazilian National Survey on Child Nutrition (ENANI-2019): a population-based household survey

2021 ◽  
Vol 37 (8) ◽  
Author(s):  
Maurício Teixeira Leite de Vasconcellos ◽  
Pedro Luis do Nascimento Silva ◽  
Inês Rugani Ribeiro de Castro ◽  
Cristiano Siqueira Boccolini ◽  
Nadya Helena Alves-Santos ◽  
...  
Keyword(s):  
National Survey ◽  
Child Nutrition ◽  
Household Survey ◽  
Population Based ◽  
Sampling Plan ◽  
Micronutrient Deficiencies ◽  
Blood Biomarkers ◽  
Children Under Five ◽  
Under Five ◽  
Geographic Regions

The article describes methodological aspects in defining the study population, sampling plan, and sample weigthing and calibration of effective sample of the Brazilian National Survey on Child Nutrition (ENANI-2019). This population-based household survey assessed breastfeeding and dietary intake, anthropometric assessment of nutritional status, and micronutrient deficiencies by blood biomarkers in children under five years of age. The data were obtained with a probability sample, with stratification by the five geographic regions in the country and clustering by census enumeration areas (CEAs). The sample was calculated at 15,000 households distributed in 1,500 CEAs, with 300 allocated in each of Brazil’s five major geographic regions and 10 eligible households per CEA, sampled using inverse sampling. The required population parameters were thus estimated to reach the study’s objectives. The basic sampling design weights were calculated as the inverse probabilities of the households’ inclusion in the study. Imputation was used to compensate for non-response to items in the target variables, except for data on the blood biomarkers. Finally, calibration used population totals of children in 60 post-strata, defined by cross-classification of the following variables: major geographic region, sex, and age. The final sample included 14,558 children residing in 12,524 households, distributed in 1,382 CEAs in the 26 states of Brazil and the Federal District. The data from the ENANI-2019 survey will support strategies for the promotion and implementation of public policies for children under five years of age.

scholarly journals Methodological aspects of the assessment of dietary intake in the Brazilian National Survey on Child Nutrition (ENANI-2019): a population-based household survey

2021 ◽  
Vol 37 (8) ◽  
Author(s):  
Elisa Maria de Aquino Lacerda ◽  
Cristiano Siqueira Boccolini ◽  
Nadya Helena Alves-Santos ◽  
Inês Rugani Ribeiro de Castro ◽  
Luiz Antonio dos Anjos ◽  
...  
Keyword(s):  
Quality Control ◽  
Data Collection ◽  
Dietary Intake ◽  
National Survey ◽  
Child Nutrition ◽  
Household Survey ◽  
Population Based ◽  
Current Status ◽  
Children Under Five ◽  
Under Five

Abstract: This manuscript aims to describe the methodological, operational, and quality control aspects of the assessment of dietary intake in children under five years of age participating in the Brazilian National Survey on Child Nutrition (ENANI-2019), a household survey in a probability sample of Brazilian households. Two instruments were developed to assess child feeding practices - a structured, current status-type questionnaire and a 24-hour dietary recall (24HR), both installed in a mobile data collection device used by previously trained interviewers. A Photographic Manual for Quantification of Children’s Dietary Intake was specifically developed for and used in the survey as a support aid to identify and quantify foods reported in the 24HR. During the fieldwork, continuous quality control of the records was performed. Data errors or incomplete data in the system were corrected, and the fieldwork team was systematically contacted and informed on their performance, with reiterated orientation on data collection. All children in the sample were evaluated with the two instruments, but data were obtained from the structured questionnaire on all children in the sample (n = 14,558) and 24HR on 14,541 children. ENANI-2019 developed innovative methods and materials based on the Brazilian and international literature to address knowledge gaps on under-five children’s dietary intake. Unprecedented results will be produced, which will allow updating food and nutrition guidelines for children under five years of age in Brazil.

scholarly journals Nutritional status of urban adolescents: individual, household and neighborhood factors based on data from The BH Health Study

2015 ◽  
Vol 31 (suppl 1) ◽  
pp. 232-245
Author(s):  
Stephanie Bispo ◽  
Maria Isabel Toulson Davisson Correia ◽  
Fernando Augusto Proietti ◽  
César Coelho Xavier ◽  
Waleska Teixeira Caiaffa
Keyword(s):  
Nutritional Status ◽  
Household Survey ◽  
Well Being ◽  
Population Based ◽  
Health Study ◽  
Multinomial Regression ◽  
Neighborhood Factors ◽  
Head Of Household ◽  
Individual Household ◽  
Belo Horizonte

Abstract The increasing prevalence of overweight in young people suggests that adolescent nutritional status is influenced by environmental factors. Using hierarchical modelling, this study aimed to analyse the association between individual, household and neighborhood factors and adolescent nutritional status and well-being. The study used data from a population-based household survey conducted in Belo Horizonte, the capital of the State of Minas Gerais, Brazil, between 2008 and 2009. Data was obtained from an adult and adolescent in each household using a confidential questionnaire and anthropometric measurements. Adolescent nutritional status was evaluated using multinomial regression analysis considering distal and proximal influences. The prevalence of overweight and thinness among the sample of 1,030 adolescents was 21.9% and 4.6%, respectively. Although variables from all blocks remained in the final model, head of household education level, family habits and family nutritional status were shown to strongly influence adolescent nutritional status. New approaches to public health are needed which focus on raising awareness and promoting health education targeting teenagers and their social context.

scholarly journals Influence of different body mass index cut-off values in assessing the nutritional status of adolescents in a household survey

2009 ◽  
Vol 25 (8) ◽  
pp. 1850-1857 ◽  
Author(s):  
Fabio da Silva Gomes ◽  
Luiz Antonio dos Anjos ◽  
Mauricio Teixeira Leite de Vasconcellos
Keyword(s):  
Body Mass Index ◽  
Nutritional Status ◽  
Body Mass ◽  
Task Force ◽  
Household Survey ◽  
Population Based ◽  
Female Adolescent ◽  
World Health ◽  
Adolescent Population ◽  
Health Organization

The purpose of this study was to evaluate the anthropometric nutritional status of the adolescent population of Niterói, Rio de Janeiro State, Brazil, and the influence of changes in the adopted body mass index (BMI) cut-offs in the nutritional status assessment of the adolescent population. A population-based survey conducted in 2003 obtained data from a probabilistic sample of 1,734 households and 523 adolescents. The multiple proportions test and prevalence ratios were used to analyze differences between estimates obtained from different BMI cut-offs. Changes in cut-off values from the old to the new recommendation of the World Health Organization (WHO) resulted in a significant increase in overweight prevalence among total, male and female adolescent population (25%, 27% and 23%, respectively) (p < 0.05). There were significant increases in the prevalence of low-BMI-for-age among the total (29% increase) and male (39%) adolescent populations when the proposal of the International Obesity Task Force was compared to current WHO BMI-for-age cut-offs (p < 0.05). It is shown that a simple change in cut-off values used to define the anthropometric nutritional status can significantly modify the nutritional profile of an adolescent population.

scholarly journals National Survey on Access, Use and Promotion of Rational Use of Medicines (PNAUM): household survey component methods

2016 ◽  
Vol 50 (suppl 2) ◽  
Author(s):  
Sotero Serrate Mengue ◽  
Andréa Dâmaso Bertoldi ◽  
Alexandra Crispim Boing ◽  
Noemia Urruth Leão Tavares ◽  
Tatiane da Silva Dal Pizzol ◽  
...  
Keyword(s):  
National Survey ◽  
Urban Areas ◽  
Comprehensive Evaluation ◽  
Household Survey ◽  
Population Based ◽  
Cross Sectional ◽  
Rational Use ◽  
Rational Use Of Medicines ◽  
And Gender ◽  
The Impact

ABSTRACT OBJECTIVE To describe methodological aspects of the household survey National Survey on Access, Use and Promotion of Rational Use of Medicines (PNAUM) related to sampling design and implementation, the actual obtained sample, instruments and fieldwork. METHODS A cross-sectional, population-based study with probability sampling in three stages of the population living in households located in Brazilian urban areas. Fieldwork was carried out between September 2013 and February 2014. The data collection instrument included questions related to: information about households, residents and respondents; chronic diseases and medicines used; use of health services; acute diseases and events treated with drugs; use of contraceptives; use of pharmacy services; behaviors that may affect drug use; package inserts and packaging; lifestyle and health insurance. RESULTS In total, 41,433 interviews were carried out in 20,404 households and 576 urban clusters corresponding to 586 census tracts distributed in the five Brazilian regions, according to eight domains defined by age and gender. CONCLUSIONS The results of the survey may be used as a baseline for future studies aiming to assess the impact of government action on drug access and use. For local studies using a compatible method, PNAUM may serve as a reference point to evaluate variations in space and population. With a comprehensive evaluation of drug-related aspects, PNAUM is a major source of data for a variety of analyses to be carried out both at academic and government level.

scholarly journals Misuse of Tramadol in the United States: An Analysis of the National Survey of Drug Use and Health 2002-2017

2020 ◽  
Vol 14 ◽  
pp. 117822182093000
Author(s):  
Scott A Reines ◽  
Bonnie Goldmann ◽  
Mark Harnett ◽  
Lucy Lu
Keyword(s):  
Drug Use ◽  
National Survey ◽  
Household Survey ◽  
The United States ◽  
Population Based ◽  
Cross Sectional ◽  
Health Related ◽  
Nationally Representative ◽  
The U.S ◽  
Intravenous Formulation

Objective: To analyze the rates of misuse - that is, use in any way not directed by a doctor - of products containing oral tramadol, a Schedule IV opioid, from the National Survey of Drug Use and Health (NSDUH), as compared to comparator Schedule II opioids (morphine, oxycodone, and hydrocodone) and alprazolam, a commonly prescribed Schedule IV controlled substance in the U.S. Methods: The NSDUH is a congressionally mandated household survey that collects information on tobacco, alcohol, and drug use, mental health and other health-related issues in the US. A cross-sectional surveillance study design was used to examine lifetime and past year misuse of oral tramadol and comparators of interest among NSHUH respondents aged 12 years or older. Based on when particular data were available, the past-year misuse analysis includes NSDUH data from 2015 to 2017, and the lifetime misuse analysis includes NSDUH data from 2002 to 2014. Results: In 2015 to 2017, past-year misuse of oral tramadol was approximately 4% of the total number of prescriptions, versus 7% to 8% for all of the comparators when adjusted for drug availability. In 2002 to 2014, lifetime misuse of oral tramadol remained at 1.5% or less over the 13-year period, and was lower than reported for hydrocodone (6%) and oxycodone (4%), respectively. Comparison of oral tramadol and alprazolam showed misuse of tramadol was also much lower than alprazolam. Too few reports of tramadol misuse by injection (n = 7) were reported, versus 570, 1096, and 32 reports of injection of morphine, oxycodone, and hydrocodone, respectively, during the 16-year analysis period to allow for any population-based estimation. Only morphine has an intravenous formulation available and tramadol was not available as an intravenous formulation in the U.S. during that time period. Conclusions: This analysis shows a low prevalence of oral tramadol misuse, relative to other commonly prescribed opioids, in a nationally representative sample of noninstitutionalized US residents. Estimates of reported oral tramadol misuse have remained relatively stable over time and are substantially lower than those reported for comparators when adjusted for prescription volume. Reports of oral tramadol misuse are also much less than alprazolam, another Schedule IV drug.

scholarly journals Remarkable variability in SARS-CoV-2 antibodies across Brazilian regions: nationwide serological household survey in 27 states

2020 ◽  
Author(s):  
Pedro C Hallal ◽  
Fernando P Hartwig ◽  
Bernardo L Horta ◽  
Gabriel D Victora ◽  
Mariângela F Silveira ◽  
...  
Keyword(s):  
Sample Size ◽  
Indigenous People ◽  
Rapid Test ◽  
Household Survey ◽  
Federal District ◽  
Population Based ◽  
The South ◽  
The North ◽  
Slow Progression ◽  
The City

AbstractPopulation based data on COVID-19 are essential for guiding public policies. We report on the first of a series of planned seroprevalence surveys relying upon on household probabilistic samples of 133 large sentinel cities in Brazil, including 25,025 participants from all 26 states and the Federal District. Seroprevalence of antibodies to SARS-CoV-2, assessed using a lateral flow rapid test, varied markedly across the country’s cities and regions, from below 1% in most cities in the South and Center-West regions to up to 25% in the city of Breves in the Amazon (North) region. Eleven of the 15 cities with the highest seroprevalence were located in the North, including the six cities with highest prevalence which were located along a 2,000 km stretch of the Amazon river. Overall seroprevalence for the 90 cities with sample size of 200 or greater was 1.4% (95% CI 1.3–1.6). Extrapolating this figure to the population of these cities, which represent 25% of the country’s population, led to an estimate of 760,000 cases, as compared to the 104,782 cases reported in official statistics. Seroprevalence did not vary significantly between infancy and age 79 years, but fell by approximately two-thirds after age 80 years. Prevalence was highest among indigenous people (3.7%) and lowest among whites (0.6%), a difference which was maintained when analyses were restricted to the North region, where most indigenous people live. Our results suggest that pandemic is highly heterogenous, with rapid escalation in Brazil’s North and Northeast, and slow progression in the South and Center-West regions.

Sign in / Sign up

Export Citation Format

Share Document