Validade do peso e da altura auto-referidos: o estudo de Goiânia
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Data
2006
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Resumo
OBJECTIVE: To assess the validity of self-reported weight and height at the time of
diagnosing obesity, and to identify the sociodemographic and individual characteristics
that might be a source of information bias.
METHODS: This was a cross-sectional population-based study carried out in the
city of Goiânia in 2001. Interviews were conducted with 1,023 individuals aged 20-
64 years, in their homes, to collect sociodemographic and self-reported weight and
height information. On the same occasion, weight and height measurements were
made on these individuals. The mean differences and correlation coefficients between
self-reported and measured data were calculated according to age, body mass index
(BMI), schooling, income and height. RESULTS: Both the men and women overestimated their heights (p<0.05), by 0.9 cm
and 2.2 cm, respectively. There was no difference between self-reported and measured
weights, either for the men (-0.44 kg; p=0.06) or for the women (-0.03 kg; p>0.05).
The behavior of overestimating height was influenced by age, schooling, height and
body mass index. Although this index obtained from the self-reported data was
underestimated (p<0.05), by 0.27 kg/m 2 and 0.67 kg/m 2 for men and women respectively,
the measured and self-reported data presented a high degree of agreement. Both the
sensitivity and specificity of the self-reported body mass index were high, in relation
to identifying the measured index.
CONCLUSIONS: In epidemiological studies for monitoring the prevalence of excess
weight in populations, self-reported weights and heights constitute reliable data, which
gives validity to the methodology utilized.
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Obesidade, diagnóstico, Sensibilidade e especificidade, Índice de massa corporal, Obesity, diagnosis, Body mass index, Sensitivity and specificity
Citação
PEIXOTO, Maria do Rosário Gondim; BENICIO, Maria Helena D’Aquino; JARDIM, Paulo César Brandão Veiga. Validade do peso e da altura auto-referidos: o estudo de Goiânia. Revista de Saúde Pública, São Paulo, v. 40, n. 6, p. 1065-1072, 2006.