Estudos de validação: qual análise utilizar?

Ribeiro, Leonardo Gonçalves; Cardoso, Letícia de Oliveira

doi:10.1590/s1517-86922009000500017

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…This adjustment of nutrients using energy is seen as a methodological strategy developed to correctly try to estimate parameters and try to control any eventual confusion effect caused by energy in validation 8,10 studies. The Reduction of coefficient values after the adjustment by energy is useful to other studies [27][28][29][30][31] , which may evidence the presence of systematic errors on sub-or-super account of food consumption 5,31. A large number of validation studies used the Pearson's or the Spearman's correlation coefficient when comparing the methods 9,[27][28][29][30][32][33][34][35][36][37][38][39][40] which turned results more difficult to be evaluated. In spite of the coefficient's attained values, the use of ICC was adopted for viewing the several publications which point to overestimates association when using Pearson's correlation in samples with great inter-subject variability, which as a consequence, could lead to false conclusions concerning the method's validity 23,41 .…”

Section: Discussionmentioning

confidence: 99%

Validation of a quantitative food frequency questionnaire developed to under graduate students

Komatsu

Oku

Gimeno

et al. 2013

Rev. bras. epidemiol.

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A validity test of a Food Frequency Questionnaire was carried out using 50 students of health occupation in São Paulo, Brazil. Therefore, a three day dietary record was used as reference method and variables such as energy, macronutrients and dietary fiber were analyzed. The accordance between the Food Frequency Questionnaire and average data from dietary record was tested with kappa statistics and intra-class correlation coefficients (ICC). Limits of agreement were estimated by the Bland-Altman's method. Better results were found for calories (ICC 0.43; 95%CI 0.17 -0.63) and non-energy-adjusted nutrients, except dietary fiber (ICC 0.34; 95%CI 0.07 -0.56). The percentage of individuals classified in the same category of consumption was nearly half (49.8%), while only 16% of them were classified in opposite categories. With the exception of lipids, other analyzed variables tended to be overestimated by the Food Frequency Questionnaire. The Food Frequency Questionnaire is recommended as a method of assessing food intake of university students in studies which focuson calorie estimates and also intend to classify groups into intake categories.

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Section: Discussionmentioning

confidence: 99%

Validation of a quantitative food frequency questionnaire developed to under graduate students

Komatsu

Oku

Gimeno

et al. 2013

Rev. bras. epidemiol.

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“…A plot of agreement between the mean and the difference between the measures was generated, enabling the evaluation of the magnitude of the differences and the respective 95% Confidence Intervals [37].…”

Section: E T H O D Smentioning

confidence: 99%

Self-reported and measured weight, height and body mass index for the diagnosis of the nutritional status in people living with HIV/AIDS

Lima

Medeiros

et al. 2017

Rev. Nutr.

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ObjectiveTo validate self-reported weight and height data for people living with HIV/AIDS. MethodsThis cross-sectional study involved 481 people living with HIV/AIDS seen at a reference unit in João Pessoa, state of Paraíba, Brazil, between September and December 2015, 99 (20.5%) of whom had their weight and height measured. The intraclass correlation coefficient was calculated to determine the relationship between the self-reported and measured weight, height and body mass index values, and linear regression analysis was used to generate equations to predict weight and height. It were significant p-value under 5% for statistic tests applied. ResultsIn the sample with measured values, 57.6% of men, with a mean age of 44 years old and a mean income per capita equivalent to US$145.50, high correlations (r>0.90) between the self-reported and measured values for weight, height and body mass index were observed. The accuracy was 92.6%, and the Kappa coefficient was greater than 0.85. Women tended to underestimate weight and overestimate height. The men overestimated weight and underestimated height. The intraclass correlation coefficients were greater than 0.95. ConclusionThe use of self-reported measures of weight, height and body mass index for nutritional assessment of people living with HIV/AIDS is valid and must be considered for similar populations when time and resources are limiting factors.Keywords: Body mass index. Body weights and measures. HIV. R E S U M O Objetivo Validar dados autorreferidos de peso e altura de pessoas vivendo com HIV/AIDS. Métodos Estudo seccional envolvendo 481 pessoas vivendo com HIV/AIDS atendidas em serviço de referência de João

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“…Além disso, este método permite veri car a presença do viés de medida, ou seja, o quanto a diferença entre os resultados das medidas se distancia de zero. Essa técnica tem se mostrado altamente informativa e requer pouca so sticação nas rotinas computacionais 19 . …”

Section: Métodounclassified

Validação de equações antropométricas específicas e generalizadas para estimativa do percentual de gordura corporal em estudantes de Educação Física do sexo masculino

Both

Matheus

Behenck

2015

Rev. bras. educ. fís. esporte

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ResumoO objetivo deste estudo foi verifi car a validade das equações específi cas de GUEDES e GUEDES 7 e das generalizadas de PETROSKI 9 em universitários do sexo masculino. A amostra foi constituída de 104 universitários de Educação Física com idade média de 21,7 ± 2,7 anos, submetidos à pesagem hidrostática (PH) e à antropometria (dobras cutâneas e perímetros corporais). Não foram observadas diferenças estatisticamente signifi cativas entre as medidas de percentual de gordura pela PH e nove equações de PETROSKI 9 . Todos os resultados obtidos pelas equações de GUEDES e GUEDES 7 apresentaram diferenças signifi cativas quando comparados com os da PH. Entre as equações analisadas, oito desenvolvidas por PETROSKI 9 apresentaram validade concorrente na amostra estudada.

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Estudos de validação: qual análise utilizar?

Cited by 3 publications

References 3 publications

Validation of a quantitative food frequency questionnaire developed to under graduate students

Validation of a quantitative food frequency questionnaire developed to under graduate students

Self-reported and measured weight, height and body mass index for the diagnosis of the nutritional status in people living with HIV/AIDS

Validação de equações antropométricas específicas e generalizadas para estimativa do percentual de gordura corporal em estudantes de Educação Física do sexo masculino

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