Peso e altura autorreferidos para determinação do estado nutricional de adultos e idosos: validade e implicações em análises de dados

• Autor(a) principal: Del Duca, Giovâni Firpo
• Data de Publicação: 2012
• Outros Autores: González-Chica, David Alejandro, Santos, Janaína Vieira dos, Knuth, Alan Goularte, Camargo, Maria Beatriz Junqueira de, Araújo, Cora Luíza
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Cadernos de Saúde Pública
• Texto Completo: https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/4948
• topic: Estado Nutricional; Antropometria; Índice de Massa Corporal; Auto-Relato; Viés (Epidemiologia)

This study evaluated the validity of self-reported weight and height for determining nutritional status and the implications of their use for analyzing associations with health outcomes. A population-based cross-sectional study in Pelotas, Rio Grande do Sul State, Brazil, in 2007 (n = 2,986) drew a sub-sample of 276 individuals aged > 20 years. Mean self-reported weight was similar to measured weight; height was overestimated in men (1.4cm) and women (2.5cm); real body mass index (BMI) was underestimated by about 1kg/m². Even with small mean differences, data variability was great. The results were influenced by gender, age, and schooling. The use of self-reported measures underestimated prevalence of overweight and obesity, and unpredictable errors were found in the analysis of association with health outcomes (underestimation, overestimation, and reversal of real effect measures). Correction equations reduced the mean differences but did not resolve variability of the differences, classification errors, or biases in the associations.