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OBJECTIVE: To confirm the adequacy of the formula suggested in the literature and/or to develop appropriate equations for the Brazilian population of immobilized patients based on simple anthropometric measurements. METHODS: Hospitalized patients were submitted to anthropometry and methods to estimate weight and height of bedridden patients were developed by multiple linear regression. RESULTS: Three hundred sixty eight persons were evaluated at two hospital centers and five weight-predicting and two height-predicting equations were developed from the measurements obtained. Among the new equations developed, the simplest one for weight estimate was: Weight (kg) = 0.5759 x (arm circumference, cm) + 0.5263 x (abdominal circumference, cm) + 1.2452 x (calf circumference, cm) -4.8689 x (Sex, male = 1 and female = 2) -32.9241 (r = 0.94); and the one for height estimate was: Height (cm) = 58.6940 - 2.9740 x (Sex) -0.0736 x (age, years) + 0.4958 x (arm length, cm) + 1.1320 x (half- span, cm) (r = 0.88). The estimates thus calculated did not differ significantly from actual measurements, with p = 0.94 and 0.89 and a mean error of 6.0 and 2.1% for weight and height, respectively. CONCLUSION: We suggest that these equations can be used to estimate the weight and height of bedridden patients when necessary or when these parameters cannot be measured with a scale and a stadiometer. OBJETIVO: Verificar a adequação das fórmulas sugeridas na literatura, e desenvolver equações preditivas de peso e altura para a população hospitalizada brasileira, a partir de medidas antropométricas usuais. MÉTODOS: Realizou-se antropometria e bioimpedância de pacientes hospitalizados. Por meio de regressão linear múltipla, desenvolveram-se fórmulas com o objetivo de prever o peso e a altura. Os resultados foram comparados com os obtidos de fórmulas da literatura e com as medidas reais. RESULTADOS: Foram avaliadas 368 pacientes e desenvolvidas equações preditivas do peso e da altura, ou seja: para estimativa de peso, peso (kg)= 0,5759 x (circunferência do braço, cm) + 0,5263 x (circunferência abdominal, cm) + 1,2452 x (circunferência da panturrilha, cm) -4,8689 x (Sexo, masculino= 1 feminino= 2) -32,9241 (r= 0,94, p<0.001); e altura (cm)= 58,6940 -2,9740 x (Sexo) -0,0736 x (idade, anos) + 0,4958 x (comprimento do braço, cm) + 1,1320 x (meia envergadura, cm) (r= 0,88, p<0.001). As estimativas realizadas foram estatisticamente semelhantes às medidas reais, p= 0,94 e 0,89 e erro médio de 6,0% e 2,1%, respectivamente para o peso e altura. Quando aplicadas as formulas preconizadas pela literatura, os resultados encontrados foram estatisticamente diferentes do real (p<0,001). CONCLUSÃO: Sugere-se que estas equações sejam utilizadas para prever peso e altura de pacientes acamados

Weight and height prediction of immobilized patients