Validity of self-reported measures of weight and height and its impact on nutritional status prediction by body mass index

Introdução: medidas autorreferidas de massa e estatura têm sido utilizadas para avaliação do estado nutricional em estudos epidemiológicos. Objetivo: verificar a validade da massa e da estatura autorreferidas, bem como do índice de massa corporal (IMC) obtido com estes valores. Método: participaram 395 homens e 549 mulheres . Os dados foram coletados entre estudantes da Universidade Santa Cecília - Santos. Todos os sujeitos referiam a sua massa e estatura, para a realização das medidas em seguida.Utilizou-se o teste t de Student para amostras dependentes para comparação das médias, a correlação linear de Pearson (r) e Coeficiente de Correlação Intraclasse (R) entre as duas formas de obtenção dos resultados. Resultados: os homens autorreferiram de forma válida tanto sua massa (p=0,125; r=0,963; R=0,912) quanto sua estatura (p=0,058; r=0,974; R=0,921), validando a avaliação do estado nutricional. Já as mulheres tenderam a subestimar sua massa corporal (p=0,000; r=0,882; R=0,888) e superestimar sua estatura (p=0,000; r=0,854; R=0,814), causando subestimativa no valor de IMC. Conclusão: para o grupo estudado não seria válido utilizar as medidas autorreferidas de massa e estatura das mulheres para estimativa do seu estado nutricional pelo índice de massa corporal.INTRODUCTION: the nursing staff must inform parents with children suffering from congenital heart defects regarding their needs related to this situation. The most common needs are the seven, as follows: Information related to cardiopathy, promotion of physical activities, adequate diet, care with buccal health, prevention of infectious endocarditis, care during cyanosis crisis and drug administration. OBJECTIVE: to characterize how much information these parents have regarding this disorder. METHOD: systematic mapping on the literature in MEDLINE, Cochrane, CINAHL, LILACS and SciELO databases, from 1997 to 2007, obtaining 17 papers. RESULTS: the following needs, cyanosis crisis, promotion of physical activities and drug administration, were not adequately studied. The majority amongst the 17 papers was concentrated on the remaining four needs. Beside this, parent's knowledge is not satisfactory and is fragmented. It happens either in developed countries as well as in the underdeveloped ones. In general, care is performed by nurses, dental physicians and physicians. Training programs for parents are scarce and only one is described as successful. Changes are mandatory in terms of reorganization of services involving training and support for parents. Besides, validation of programs and protocols of care to promote training and development is required. These programs must be flexible to allow adaptation to clinical situation and to social, cultural and economic determinant factors acting on the family