Agreement between self-reported and measured weight among older adults in southern Brazil

• Autor(a) principal: Bielemann,Renata Moraes
• Data de Publicação: 2019
• Outros Autores: Pete,Nathalia Brandão, Cardoso,Andressa Souza, Costa,Caroline dos Santos, Gonzales,Maria Cristina
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Geriatrics, Gerontology and Aging (Online)
• Texto Completo: https://ggaging.com/details/569
• topic: self report; body weight; nutritional status; aged.

<p><b>OBJECTIVE:</b> To evaluate the agreement between self-reported and measured weight among older adults living in the city of Pelotas, southern Brazil.<br> <b>METHODS:</b> Cross-sectional analyses using data from the second follow-up of “COMO VAI?”, a longitudinal population-based study that included community-dwelling older adults from the urban region of Pelotas. Weight was self-reported and measured at the same visit. Standing height was estimated based on knee height, which was measured at the first follow-up (2014). Body mass index was categorized as normal (&lt; 24.9 kg/m²), overweight (between 25.0 and 29.9 kg/m²) or obese (&ge; 30 kg/m²). Agreement between self-reported and measured weight and between body mass index based on self-reported and measured weight was evaluated using Lin’s concordance correlation coefficient and a Bland-Altman plot. The kappa coefficient was used to evaluate the agreement between body mass index according to self-reported and measured weight.<br> <b>RESULTS:</b> Ninety-nine participants were visited at home, where their weight was self-reported and directly measured. The mean difference between measured and self-reported weight was 1.8 kg (95%CI 0.5; 3.1) in men and -0.1 kg (95%CI -1.1; 0.8) in women. Nutritional status according to self-reported and measured weight showed good agreement (81% of the elderly correctly classified themselves) with a kappa of 0.71 in men and 0.68 in women, and a weighted kappa of 0.75 in men and 0.72 in women.<br> <b>CONCLUSIONS:</b> There was good agreement between self-reported and measured weight in women, but strong agreement for nutritional status according to self-reported and measured weight in both sexes, thus self-reported weight can be used to monitor nutritional status in older adults.</p>