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[Agreement of anthropometric measures in a population-based epidemiological study: Ribeirão Preto, SP, 2006. OBEDIARP
Vanilde de Castro1, Suzana Alves de Moraes, Isabel Cristina Martins de Freitas
1Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil.
Abstract:
This study aimed to assess the agreement between measured and self-reported height and weight measures in 632 adults. The agreement was calculated using an intra-class correlation coefficient (estimated by ANOVA using one classification criterion), mean differences and agreement limits, according to Bland and Altman. The intra-category agreement of the nutritional status was assessed by Kappa statistics. In men, ICCs were 0.926 (95%CI: 0.894-0.959) and 0.873 (95%CI: 0.799-0.946), for weight and height measures, respectively, with the following mean difference and agreement limits for BMI: 0.143 kg/m(2) (-2.844-3.129). In women, ICCs were 0.981 (95%CI: 0.973-0.988) and 0.794 (95%CI: 0.687-0.900) respectively, with the following mean difference and agreement limits for BMI: 0.462 kg/m(2) (-2.457-3.382). Kappa coefficients for nutritional status in men and women were, respectively, 0.777 (95%CI: 0.683-0.872) and 0.793 (95%CI: 0.725-0.862). Self-reported measures are appropriate alternatives to classify nutritional status in epidemiological studies.
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