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Validity and reliability of self-reported weight, height and body mass index from telephone interviews. <http://www.scielo.br/pdf/csp/v26n1/12.pdf> (accessed 24 August 2012)

Universidade de São Paulo, São Paulo, Brasil.
Cadernos de saúde pública / Ministério da Saúde, Fundação Oswaldo Cruz, Escola Nacional de Saúde Pública (Impact Factor: 0.89). 01/2010; 26(1):110-22. DOI: 10.1590/S0102-311X2010000100012
Source: PubMed

ABSTRACT The objective of this study was to examine factors associated with the validity of self-reported anthropometric measures. The authors selected 726 adults, aged 40 or older, living in the greater metropolitan region of São Paulo, Brazil. Self-reported weights and heights obtained from telephone interviews were compared to values measured directly by means of a multicenter survey. Mean differences (+/-SD) between self-reported and measured weights and heights among men were 0.54 (+/-0.30kg) and 1.98 (+/-0.31cm); while among women, they were -0.48 (+/-0.23kg) and 3.97 (+/-0.28cm), respectively. Sensitivity and specificity to diagnose obesity were 71% and 98% for males, and 78% and 96%, for females, respectively. There was good agreement between measured and self-reported weights and body mass index (BMI) among both sexes, however, self-reported height was less reliable. Self-reported weight and height obtained from telephone interviews are valid to estimate the obesity prevalence in this population, although systematic bias was found. Thus, it is desirable that researchers develop their own equations depending on the population being studied.

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    • "Thus, undiagnosed cases of obesity may not have been reported because of the tendency to underestimate weight, especially among women, and overestimate height, especially among men. Despite this potential limitation, the use of self-reported weight and height has been widely used in epidemiological studies as an acceptable and valid method for Brazilian adults (Lucca and Moura, 2010). "
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    ABSTRACT: This study identified environmental variables associated with obesity in the adult population of a city in Brazil. It was conducted using the Surveillance System for Risk and Protective Factors for Chronic Diseases by Telephone Survey from 2008 to 2010. The body mass index (BMI) was calculated from the participants' self-reported weight and height. Obesity was defined as a BMI ≥ 30 kg/m2. The food establishments, georeferenced areas conducive to physical activity, total income of the neighbourhood, homicide rate and population density were used to characterise the environment. In addition, individual variables were considered. A multilevel logistic regression was performed. A total of 5,273 individuals were evaluated. The odds of obesity was found to be significantly decreased with increases in the number of establishments that sell healthy food, number of restaurants, number of places for physical activity and total income - in different models. In addition, these associations remained significant after adjustment for age, gender, education and consumption of meat with visible fat. This study contributes to a better understanding of the complex interaction between environmental and individual determinants of obesity and may aid in the development of effective interventions, such as the expansion of obesity control programs.
    04/2015; 2:337-341. DOI:10.1016/j.pmedr.2015.04.019
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    • "These data have been widely used in epidemiological studies [20] and have been previously validated for Brazilian adults. High correlation coefficients were found when the measurements were compared to the corresponding self-referred values and showed good results when analyzed for sensitivity and specificity [21]. "
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    ABSTRACT: Obesity is a significant global public health problem and the main cause of many chronic diseases in both developed and developing countries. The increase in obesity in different populations worldwide cannot be explained solely by metabolic and genetic factors; environmental and social factors also have a strong association with obesity. Thus, it is believed that the current obesity epidemic is the result of a complex combination of genetic factors and an obesogenic environment .The purpose of this study was to evaluate individual variables and variables within the built and social environment for their potential association with overweight and obesity in an urban Brazilian population. Cross-sectional study was carried out in a sample of 3404 adults living in the urban area of the city. Information from the surveillance system for chronic diseases of Brazilian Ministry of Health was used and individual data was collected by telephone interviews. The database was geocoded using the Brazilian System of Postal Codes for participant residences. An updated, existing list based on the current addresses of supermarkets and hypermarkets in the city was used as an indicator variable of the availability and access to food. Georeferenced information on parks, public squares, places for practicing physical activity and the population density were also used to create data on the built environment. To characterize the social environment, we used the health vulnerability index (HVI) and georeferenced data for homicide locations. The prevalence was 44% for overweight, poisson regression was used to create the final model. The environment variables that independently associated with overweight were the highest population density, very high health vulnerability index and the homicide rate adjusted for individuals variables. The results of the current study illustrate and confirm some important associations between individual and environmental variables and overweight in a representative sample of adults in the Brazilian urban context. The social environment variables relating to the socioeconomic deprivation of the neighborhood and the built environment variables relating to higher walkability were significantly associated with overweight and obesity in Belo Horizonte.
    BMC Public Health 10/2013; 13(1):988. DOI:10.1186/1471-2458-13-988 · 2.32 Impact Factor
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    • "This study involved only adults (individual aged 18–59 years old), who were interviewed in the years 2006, 2007, 2008 and 2009. Subjects aged above 60 years old were not included to assure better reliability of the data (Luca and Moura, 2010). Pregnant women and adults who did not provide weight and/or height information were excluded. "
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    ABSTRACT: This study investigates the prevalence and trends of obesity among Brazilian adults, from 2006 to 2009, according to socio-demographic variables. Data from the Surveillance System of Risk and Protective Factors for Chronic Non-Communicable Diseases through Telephone Interviews (VIGITEL) from a sample of adults living in all state capitals were used. Approximately, 41,500 individuals were interviewed each year. Obesity prevalence and recent trends were estimated in the total population and according to socio-demographic variables. In 2006, the obesity level reached 10.8% of adults, increasing to 13.5% in 2009. The increase in obesity was higher among women than men. For women, low levels of education and unemployment are also important factors. For men, higher obesity rate is seen among those who are young, resident of southeast region, higher educated and employed individuals. Despite obesity rates in Brazil not being among the highest in the world, the rapid increase in these rates, greater in women than men, demand immediate care. These findings will help to formulate strategies needed to reduce and prevent obesity.
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