Article

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: 0.98). 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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    • "However, self-reported height and weight were a major source of study on weight status in the large-scale household survey. In addition, many studies have also demonstrated that there is a strong correlation and high level of agreement between measured and selfreported BMI383940. "
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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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    Full-text · Article · Apr 2015
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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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