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Cadernos Saúde Coletiva

versão impressa ISSN 1414-462Xversão On-line ISSN 2358-291X

Resumo

FERRIANI, Lara Onofre et al. Validity of self-reported measures of body weight and height in participants of the São Paulo Megacity Mental Health Survey. Cad. saúde colet. [online]. 2019, vol.27, n.2, pp.225-233.  Epub 27-Jun-2019. ISSN 1414-462X.  https://doi.org/10.1590/1414-462x201900020242.

Background

The use of valid indicators for the evaluation of the nutritional status of the population was very important.

Objective

The concordance between measured and self-reported data of body weight and height and BMI were evaluated and the factors that exert influence on the self-report.

Method

This is a cross-sectional population-based study of adults from the Metropolitan Region of SP (N=766). Calculation of the intraclass correlation coefficients and graphical analyzes of Bland & Altman were conducted, evaluating the agreement of these measures.

Results

In the total sample and for both genders, the self-reported body weight and the BMI were underestimated, while the self-reported height was overestimated. The imprecision in self-report was influenced by gender, age, school level,and nutritional status. The agreement between the measures was high in both genders and in the total sample (weight ICC 0.951/CI 0.938-0.961; height ICC 0.870/CI 0.597-0.939; BMI ICC 0.865/CI 0.677-0.928). The prevalence of overweight by self-reported measures was underestimated (13%) when compared to that calculated by the measured data.

Conclusion

Self-report can be influenced by several factors, producing imprecise measures. Its use in population surveys may lead to an important underestimation of the risk of illness and premature mortality for cardiovascular and metabolic diseases associated with overweight.

Palavras-chave : self report; nutritional status; anthropometry; body mass index; depression.

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