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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Underestimation of obesity and overweight based on self-report measures in the general population: prevalence and a proposal for correction models

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Author(s):
Lara Onofre Ferriani [1] ; Evandro Silva Freire Coutinho [2] ; Daniela Alves Silva [3] ; Carolina Perim de Faria [4] ; Maria del Carmen Bisi Molina [5] ; Isabela Judith Martins Benseñor [6] ; Maria Carmen Viana [7]
Total Authors: 7
Affiliation:
[1] Universidade Federal do Espírito Santo - Brasil
[2] Fundação Oswaldo Cruz - Brasil
[3] Universidade Federal do Espírito Santo - Brasil
[4] Universidade Federal do Espírito Santo - Brasil
[5] Universidade Federal do Espírito Santo - Brasil
[6] Universidade de São Paulo - Brasil
[7] Universidade Federal do Espírito Santo - Brasil
Total Affiliations: 7
Document type: Journal article
Source: Cadernos de Saúde Pública; v. 35, n. 6 2019-07-04.
Abstract

The study’s objectives: compare self-report measures of weight and height with direct measures; assess the impact of these discrepancies on body mass index (BMI) and prevalence of overweight and obesity; and apply correction models to the self-report measures and assess the degree of improvement in the corrected measures produced with the use of these models. A cross-sectional study was performed, assessing 4,151 adults (18 to 60 years) participating in the São Paulo Megacity Epidemiological Study. Linear regression models stratified by sex were proposed for correction of self-reported measures. Agreement was assessed with the intraclass correlation coefficient for the direct measures, self-report measures, and corrected measures, and kappa coefficient for BMI classification categories. Self-reported weight and the resulting BMI were underestimated, while height was overestimated, compared to direct measures. With all the correction models, the corrected measures were closer to the direct measures. Prevalence rates for excess weight, calculated by self-report measures, were underestimated by 24% in men and by 28% in women; with corrections, the underestimation decreased to 8% and 10%, respectively. The results showed moderate agreement for self-report measures and substantial agreement for corrected measures compared to direct measures. The use of correction equations for self-report data proved to be a useful method for producing more trustworthy estimates of prevalence of overweight and obesity in the general population, usually estimated from self-report measures of weight and height in population surveys. (AU)

FAPESP's process: 03/00204-3 - Epidemiological study of psychiatric disorders in the São Paulo Metropolitan Region: prevalence, risk factors, and social and economical burden
Grantee:Laura Helena Silveira Guerra de Andrade
Support Opportunities: Research Projects - Thematic Grants