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Find video protocols related to scientific articles indexed in Pubmed.
Dietary intake of Brazilian adolescents.
Public Health Nutr
PUBLISHED: 08-05-2014
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To analyse the dietary intake of Brazilian adolescents and investigate its association with sociodemographic factors as well as health-risk and health-protective behaviours.
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Frequency, distribution and time trends of types of leisure-time physical activity in Brazil, 2006-2012.
Int J Public Health
PUBLISHED: 07-07-2014
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To describe the frequency and the distribution of the main types of leisure time physical activity (LTPA) practiced by Brazilian adults in 2012 and to observe their time trends from 2006 to 2012.
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Consumption of alcoholic beverages, driving vehicles, a balance of dry law, Brazil 2007-2013.
Rev Saude Publica
PUBLISHED: 06-09-2014
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The study analyzes the trend in frequency of adults who drive under the influence of alcohol in major Brazilian cities after the passing of laws, which prohibit drunk driving. Data from the Surveillance System for Risk and Protective Factors for Chronic Diseases by Telephone Survey (VIGITEL) between 2007 and 2013 were analyzed. The frequency of adults who drove after abusive alcohol consumption was reduced by 45.0% during this period (2.0% in 2007 to 1.1% in 2013). Between 2007 and 2008 (-0.5%) and between 2012 and 2013 (-0.5%), significant reductions were observed in the years immediately after the publication of these laws that prohibit drunk driving. These improvements towards the control of drunk driving show a change in the Brazilian population's lifestyle.
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Vigitel--Aracaju, Sergipe, 2008: the effects of post-stratification adjustments in correcting biases due to the small amount of households with a landline telephone.
Rev Bras Epidemiol
PUBLISHED: 06-05-2014
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The Telephone Survey has several attractions, such as low operational costs and speed the process, when compared to the Household Survey. However, the exclusion of house holds without a landline phone canpose a serious question of the valid it yof the estimates.
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[Selection within households in health surveys].
Rev Saude Publica
PUBLISHED: 05-03-2014
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To compare the efficiency and accuracy of sampling designs including and excluding the sampling of individuals within sampled households in health surveys.
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Dietary sources of fiber intake in Brazil.
Appetite
PUBLISHED: 04-15-2014
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The objective of this study was to estimate the household availability of fibers in Brazil and to identify the dietary sources of this nutrient. Data from the 2008-2009 Household Budget Survey were used to estimate national household availability and density of fibers and also according to stratifications defined by income level, five regions and area (rural or urban). The contribution of the different food groups, classified by the nature, extent and purpose of processing, to total fibers available in Brazilian households was also determined. The mean density of per capita fibers was 7.6 g/1000 kcal. Higher availability and density of fibers was observed in households situated in rural areas and among low-income families. The main dietary sources of fiber were beans, bread, rice, fruit, vegetables and manioc flour. Fiber intake was found to be insufficient. Therefore, actions promoting a healthy diet are needed to improve the dietary quality of the Brazilian population.
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Body image and extreme attitudes toward weight in Brazilian schoolchildren (PeNSE 2012).
Rev Bras Epidemiol
PUBLISHED: 02-26-2014
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Adolescence is a period characterized by changes such as accelerated physical growth and sexual development. Besides having to deal with these changes, adolescents are faced with beauty standards and extreme valorization of physical appearance.
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Sociodemographic and behavioral factors associated with physical activity in Brazilian adolescents.
BMC Public Health
PUBLISHED: 01-24-2014
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Physical activity in adolescents is associated with short- and long-term health benefits. Physical activity can occur in various domains and is influenced by a complex network of factors. The aims of this study are 1) to describe the physical activity of Brazilian adolescents in physical education classes, during leisure time, and during active commuting and 2) to investigate the socio-demographic and behavioral factors associated with physical activity.
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Trends in prevalence of overweight and obesity in adults in 26 Brazilian state capitals and the Federal District from 2006 to 2012.
Rev Bras Epidemiol
PUBLISHED: 01-14-2014
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To describe the annual evolution of the prevalence of overweight and obesity in the adult population of the 26 Brazilian state capitals and the Federal District from 2006 to 2012.
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Trends in spending on eating away from home in Brazil, 2002-2003 to 2008-2009.
Cad Saude Publica
PUBLISHED: 01-08-2014
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The study aims to describe trends in food consumption away from home in Brazil from 2002-2003 to 2008-2009 and to analyze the influence of income on this behavior. The authors used data collected by the Household Budget Surveys conducted by the Brazilian Institute of Geography and Statistics (IBGE) in 2002-2003 and 2008-2009. The information analyzed in this study involves records of food and beverage purchases for consumption away from home. Trends in eating away from home were estimated for the total population and according to demographic and economic strata. The association between the share of food consumed away from home and income was studied using regression models to estimate income elasticity coefficients. The share of eating away from home increased 25% during the period, reaching 28% of total spending on food. Each 10% increase in mean per capita income leads to a 3.5% increase in the share of food consumed away from home. This suggests that income growth will result in future increases in the share of eating away from home.
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[Validity of indicators on physical activity and sedentary behavior from the Brazilian National School-Based Health Survey among adolescents in Rio de Janeiro, Brazil].
Cad Saude Publica
PUBLISHED: 01-07-2014
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This study evaluated the relative validity of physical activity indicators from the questionnaire used in the Brazilian National School-Based Health Survey (PeNSE) in the city of Rio de Janeiro, Brazil, based on a sample of 174 students. The following indicators of weekly physical activity were evaluated: ACTIVE-300MIN (? 300 minutes/week); ACTIVE-150MIN (? 150 minutes), INACTIVE (no physical activity). Additionally, indicators of sedentary behavior were also assessed, as daily screen time (TV, videogames, and computer). The results from the questionnaire were compared with three 24-hour recalls. The results of ACTIVE-300MIN, ACTIVE-150MIN, and INACTIVE generated by PeNSE showed high accuracy. These indicators performed better than those of sedentary behavior in relation to frequency estimates as well as sensitivity, specificity, and correct classification rate. The indicators of physical activity from PeNSE showed satisfactory relative validity.
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Ultra-processed food products and obesity in Brazilian households (2008-2009).
PLoS ONE
PUBLISHED: 01-01-2014
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Production and consumption of industrially processed food and drink products have risen in parallel with the global increase in overweight and obesity and related chronic non-communicable diseases. The objective of this study was to analyze the relationship between household availability of processed and ultra-processed products and the prevalence of excess weight (overweight plus obesity) and obesity in Brazil.
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[Estimated sodium intake for the Brazilian population, 2008-2009].
Rev Saude Publica
PUBLISHED: 12-19-2013
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To update estimates of sodium intake in Brazil.
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International differences in cost and consumption of ready-to-consume food and drink products: United Kingdom and Brazil, 2008-2009.
Glob Public Health
PUBLISHED: 06-04-2013
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This paper tests the hypothesis that one important factor determining household availability of ready-to-consume products is their cost relative to the rest of the diet. National food expenditure surveys in the UK (2008) and Brazil (2008-09) were used. Purchased food quantities were converted into dietary energy (calories) and classified into three groups: (1) foods that are unprocessed or minimally processed; (2) processed culinary ingredients; and (3) ready-to-consume products, either processed or ultra-processed. The contribution of these groups to diets in each country was calculated as a percentage of total energy. Relative cost of ready-to-consume products in each country was calculated by dividing their cost by the cost of the rest of the diet (foods plus culinary ingredients). Linear regression analysis was used to test the association between the UK to Brazil ratios of the caloric share of different ready-to-consume products, and of the relative cost of these products. The caloric share of ready-to-consume products in the UK (63.4%) was well over double that of Brazil (27.7%), whereas their cost relative to the rest of the diet was 43% lower. The lower the relative cost of ready-to-consume products in the UK (compared with Brazil), the higher their relative consumption (R(2)=0.38, p<0.01).
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Increased contribution of ultra-processed food products in the Brazilian diet (1987-2009).
Rev Saude Publica
PUBLISHED: 05-29-2013
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OBJECTIVE To establish temporal trends in household food and drink consumption in Brazil, taking into account the extent and purpose of its industrial processing. METHODS Data was obtained from Household Budget Surveys conducted in Brazil in 1987-1988, 1995-1996, 2002-2003 and 2008-2009. In all surveys, probabilistic samples of households in the metropolitan areas were studied and, for the last two surveys, the scope was national. The units of analysis were food purchases records of clusters of households. The purchased food items were divided according to the extent and purpose of their industrial processing into: in natura or minimally processed foods, processed culinary ingredients and ready-to-consume, processed and ultra-processed food and drink products. The quantity of each item was converted into energy. For each survey, the daily availability of calories per capita and the caloric share of the food groups were estimated. For the national surveys, estimates were calculated by income quintiles. Temporal trends were assessed using linear regression models and difference of means tests. RESULTS The caloric share of ready-to-consume products significantly increased between 2002-2003 and 2008-2009 (from 23.0% to 27.8% of total calories), mainly because of the increase in the consumption of ultra-processed products (20.8% to 25.4%). In the same period, there was a significant reduction in the caloric share of foods and culinary ingredients. The increase in the ultra-processed products caloric share occurred across all income quintiles. There was an uniform increase in the caloric share of ready-to-consume products in the metropolitan areas, mostly in place of ultra-processed products, accompanied by a decrease in the share of in natura or minimally processed foods and culinary ingredients. CONCLUSIONS The share of ultra-processed products significantly increased in the Brazilian diet, as seen in the metropolitan areas since the 1980s, and confirmed at a national level in the 2000s.
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[Trends in tobacco consumption from 2006 to 2011 in Brazilian capitals according to the VIGITEL survey].
Cad Saude Publica
PUBLISHED: 04-10-2013
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The aim of this study was to analyze trends in indicators of smoking in Brazilian State capitals, according to the Surveillance System for Risk and Protective Factors for Chronic Illnesses Using a Telephone Survey (VIGITEL) in adults, from 2006 to 2011. A simple linear regression model was used (a = 5%). There was a decrease in the prevalence of smokers and heavy smokers among men and in individuals 35 to 54 years of age. Smoking also decreased among individuals with 9-11 years of schooling and in the Northeast, North, and Central West regions. For heavy smokers, the largest decline was in the Northeast. Brazils regulatory policy has been responsible for the decline in tobacco prevalence.
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Behavioural patterns of protective and risk factors for non-communicable diseases in Brazil.
Public Health Nutr
PUBLISHED: 01-11-2013
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OBJECTIVE: To identify behavioural patterns of protective and risk factors for non-communicable diseases (NCD) and to explore the association between these patterns and sociodemographic characteristics. DESIGN: Principal component analysis was used to identify behavioural patterns from a list of twelve protective and risk factors for NCD. Linear regression was used to explore the association between the patterns and sociodemographic characteristics. SETTING: Participants from the Brazilian Surveillance System of Risk and Protective Factors for NCD through Telephone Interviews (VIGITEL) from the years 2009 and 2010 were included. SUBJECTS: A sample of 108 706 adults was included in the analysis. RESULTS: Two behavioural patterns were identified in the analysis, a prudent pattern and a risky pattern. The first involved mostly protective behaviours, while the second one involved essentially the risky ones. Both the less prudent and the more risky behaviour patterns were concentrated in younger men, with lower education, from the more developed region. CONCLUSIONS: Public policies to decrease NCD should be aware of the possible tendency towards behavioural patterns in order to be more effective.
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A feasibility study of cell phone and landline phone interviews for monitoring of risk and protection factors for chronic diseases in Brazil.
Cad Saude Publica
PUBLISHED: 03-02-2011
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The study objective was to evaluate the feasibility of interviews by cell phone as a complement to interviews by landline to estimate risk and protection factors for chronic non-communicable diseases. Adult cell phone users were evaluated by random digit dialing. Questions asked were: age, sex, education, race, marital status, ownership of landline and cell phones, health condition, weight and height, medical diagnosis of hypertension and diabetes, physical activity, diet, binge drinking and smoking. The estimates were calculated using post-stratification weights. The cell phone interview system showed a reduced capacity to reach elderly and low educated populations. The estimates of the risk and protection factors for chronic non-communicable diseases in cell phone interviews were equal to the estimates obtained by landline phone. Eligibility, success and refusal rates using the cell phone system were lower than those of the landline system, but loss and cost were much higher, suggesting it is unsatisfactory as a complementary method in such a context.
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[Contributions by food demand studies to the development of public policies in nutrition].
Cad Saude Publica
PUBLISHED: 02-07-2011
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Food choice in diet composition is a determinant of individual health status. Currently, there are gradually fewer conditions involving food scarcity and more involving excess food. Changes in income and relative prices generate measurable effects on the populations food intake patterns. Economic models have significant explanatory power for food demand, and the interactions between consumption, income, and prices are usually expressed as elasticity. However, the construction of some studies shows important shortcomings, especially for public policy application. This conceptual article discusses the potential contribution of food demand studies, suggesting improvements in the structural design of such studies with the inclusion of current nutritional concepts for redirecting the nutritional transition from under-nutrition to healthy eating, avoiding the present trend towards epidemic obesity.
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Regional and socioeconomic distribution of household food availability in Brazil, in 2008-2009.
Rev Saude Publica
PUBLISHED: 01-20-2011
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To describe the regional and socioeconomic distribution of household food availability in Brazil.
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Estimates of obesity trends in Brazil, 2006-2009.
Int J Public Health
PUBLISHED: 01-17-2011
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This study investigates the prevalence and trends of obesity among Brazilian adults, from 2006 to 2009, according to socio-demographic variables.
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Increasing consumption of ultra-processed foods and likely impact on human health: evidence from Brazil.
Public Health Nutr
PUBLISHED: 01-08-2011
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To assess time trends in the contribution of processed foods to food purchases made by Brazilian households and to explore the potential impact on the overall quality of the diet.
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Risk and protection factors for chronic non communicable diseases by telephone survey--VIGITEL-2009.
Rev Bras Epidemiol
PUBLISHED: 01-05-2011
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To describe the risk and protection factors for non communicable diseases with data from Telephone-based Surveillance of Risk and Protective Factors for Chronic Diseases (VIGITEL) in 2009.
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Family income, food prices, and household purchases of fruits and vegetables in Brazil.
Rev Saude Publica
PUBLISHED: 06-06-2010
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To analyze the influence of family income and food prices on the participation of fruits and vegetables in the food purchases of Brazilian households.
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Discrepancies among ecological, household, and individual data on fruits and vegetables consumption in Brazil.
Cad Saude Publica
PUBLISHED: 03-11-2010
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Information on fruits and vegetables consumption in Brazil in the three levels of dietary data was analyzed and compared. Data about national supply came from Food Balance Sheets compiled by the FAO; household availability information was obtained from the Brazilian National Household Budget Survey (HBS); and actual intake information came from a large individual dietary intake survey that was representative of the adult population of São Paulo city. All sources of information were collected between 2002 and 2003. A subset of the HBS, representative of São Paulo city, was used in our analysis in order to improve the quality of the comparison with actual intake data. The ratio of national supply to household availability of fruits and vegetables was 2.6 while the ratio of national supply to actual intake was 4.0. The discrepancy ratio in the comparison between household availability and actual intake was smaller, 1.6. While the use of supply and availability data has advantages, as lower cost, must be taken into account that these sources tend to overestimate actual intake of fruits and vegetables.
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A new classification of foods based on the extent and purpose of their processing.
Cad Saude Publica
PUBLISHED: 02-24-2010
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This paper describes a new food classification which assigns foodstuffs according to the extent and purpose of the industrial processing applied to them. Three main groups are defined: unprocessed or minimally processed foods (group 1), processed culinary and food industry ingredients (group 2), and ultra-processed food products (group 3). The use of this classification is illustrated by applying it to data collected in the Brazilian Household Budget Survey which was conducted in 2002/2003 through a probabilistic sample of 48,470 Brazilian households. The average daily food availability was 1,792 kcal/person being 42.5% from group 1 (mostly rice and beans and meat and milk), 37.5% from group 2 (mostly vegetable oils, sugar, and flours), and 20% from group 3 (mostly breads, biscuits, sweets, soft drinks, and sausages). The share of group 3 foods increased with income, and represented almost one third of all calories in higher income households. The impact of the replacement of group 1 foods and group 2 ingredients by group 3 products on the overall quality of the diet, eating patterns and health is discussed.
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[Sugar and overall macronutrient profile in the Brazilian family diet (2002-2003)].
Cad Saude Publica
PUBLISHED: 02-05-2010
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This study evaluated the impact of calories from sugar on the calorie share of other macronutrients in the Brazilian family diet. The studys estimates are based on data from the Household Budget Survey conducted by the Brazilian Institute of Geography and Statistics from July 2002 to June 2003. Multiple linear regression models were used to study the impact of sugar calories on each of the macronutrients in household food acquisition, controlling for total energy content in food acquisition and socio-demographic variables. Each calorie from sugar purchases increases the share of calories from fat by 0.3 calories and decreases the share of calories from protein by 0.7 calories. Each calorie of sugar from processed foods increases the share from fat by 1.6 calories and the share from saturated fatty acids by 0.4 calories and decreases the share from non-sugar carbohydrates by 0.8 calories. The findings shed further light on the harmful role of sugar for human health.
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Per capita versus adult-equivalent estimates of calorie availability in household budget surveys.
Cad Saude Publica
PUBLISHED: 02-02-2010
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This study aims to estimate an adult-equivalent scale for calorie requirements and to determine the differences between adult-equivalent and per capita measurements of calorie availability in the Brazilian population. The study used data from the 2002-2003 Brazilian Household Budget Survey. The calorie requirement for a reference adult individual was based on the mean requirements for adult males and females (2,550kcal/day). The conversion factors were defined as the ratios between the calorie requirements for each age group and gender and that of the reference adult. The adult-equivalent calorie availability levels were higher than the per capita levels, with the largest differences in rural and low-income households. Differences in household calorie availability varied from 22kcal/day (households with adults and an adolescent) to 428kcal/day (households with elderly individuals), thus showing that per capital measurements can underestimate the real calorie availability, since they overlook differences in household composition.
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Sugar and total energy content of household food purchases in Brazil.
Public Health Nutr
PUBLISHED: 04-30-2009
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To study the role of energy derived from sugar (both table sugar and sugar added to processed foods) in the total energy content of food purchases in Brazil.
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[Influence of income on food expenditures away from home among Brazilian families, 2002-2003].
Cad Saude Publica
PUBLISHED: 04-23-2009
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This study describes and evaluates the influence of income on the percentage of food expenditures away from home for Brazilian families. Food acquisition data from the National Household Budget Survey conducted from 2002 to 2003 (POF 2002/2003) by the Brazilian Institute of Geography and Statistics (IBGE) or National Census Bureau was used in the analysis. Information on food-and-drink expenditures away from home was analyzed. The influence of income on the share of food purchased away from home in the household budget, adjusted for socio-demographic variables, was analyzed through elasticity coefficients estimated in multiple linear regression. Food purchased away from home accounted for 21% of total food expenditures by Brazilian households. A 10% increase in income increased the share of food purchased away from home by 3%. Income elasticity was high, especially for the lowest income families. The results demonstrate an important influence of income on food expenditures away from home, and higher income is associated with a greater share of food purchased away from home.
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[Estimated sodium intake by the Brazilian population, 2002-2003].
Rev Saude Publica
PUBLISHED: 02-13-2009
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To estimate the magnitude and distribution of sodium intake in Brazil and to identify major dietary sources contributing to this intake.
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Consumer attitudes, knowledge, and behavior related to salt consumption in sentinel countries of the Americas.
Rev. Panam. Salud Publica
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To describe individual attitudes, knowledge, and behavior regarding salt intake, its dietary sources, and current food-labeling practices related to salt and sodium in five sentinel countries of the Americas.
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[Cost and energy density of diet in Brazil, 2008-2009].
Cad Saude Publica
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This study aimed to evaluate the relationship between the cost and energy density of diet consumed in Brazilian households. Data from the Brazilian Household Budget Survey (POF 2008/2009) were used to identify the main foods and their prices. Similar items were grouped, resulting in a basket of 67 products. Linear programming was applied for the composition of isoenergetic baskets, minimizing the deviation from the average household diet. Restrictions were imposed on the inclusion of items and the energy contribution of the various food groups. A reduction in average cost of diet was applied at intervals of R$0.15 to the lowest possible cost. We identified an inverse association between energy density and cost of diet (p < 0.05), and at the lowest possible cost we obtained the maximum value of energy density. Restrictions on the diets cost resulted in the selection of diets with higher energy density, indicating that cost of diet may lead to the adoption of inadequate diets in Brazil.
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Consumption of ultra-processed foods and likely impact on human health. Evidence from Canada.
Public Health Nutr
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To investigate consumption of ultra-processed products in Canada and to assess their association with dietary quality.
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Availability of added sugars in Brazil: distribution, food sources and time trends.
Rev Bras Epidemiol
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To describe the regional and socio-economic distribution of consumption of added sugar in Brazil in 2002/03, particularly products, sources of sugar and trends in the past 15 years.
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JoVE Visualize is a tool created to match the last 5 years of PubMed publications to methods in JoVE's video library.

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In developing our video relationships, we compare around 5 million PubMed articles to our library of over 4,500 methods videos. In some cases the language used in the PubMed abstracts makes matching that content to a JoVE video difficult. In other cases, there happens not to be any content in our video library that is relevant to the topic of a given abstract. In these cases, our algorithms are trying their best to display videos with relevant content, which can sometimes result in matched videos with only a slight relation.