[Reliability of the classification of nutritional status obtained through the BMI and three different methods of body fat percentage in patients with type 1 diabetes mellitus].
OBJECTIVE
To assess the reliability of classification of nutritional status (NS) obtained through the body mass index (BMI) and three different methods of body composition (BC) in individuals type 1 diabetics (T1D) and non-diabetic subjects.


METHODS
84 patients with T1D and 37 controls were evaluated. Anthropometric data was collected to calculate BMI and assessment of BC was performed through the methods of skinfold thickness (SF), bipolar (BI) and tetrapolar (TT) bioelectrical impedance. The agreement between the scores of each method was determined by Kappa (K) coefficient.


RESULTS
Considering all the patients, only 48 (57.1%) presented classification of BMI that agreed with the SF method, 58 (69%) with the BI and 45 (53.5%) with the TT. The K results for individuals with T1D was DC = 0.261, BI = 0.320 and TT = 0.174. The controls had higher values (DC = 0.605, BI = 0.360 and TT = 0.400). However, all values were considered low.


CONCLUSIONS
The method of BMI showed little sensitivity to BC changes in patients with T1D. Appropriated methods for the assessment of BC should be used to classify the NS of this population.
Nunes
Raquel Ramalho
RR
Departamento de Medicina, Disciplina de Diabetes e Metabologia, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro(Uerj), Rio de Janeiro, RJ, Brasil. raquelrnunes@hotmail.com
Clemente
Eliete Leão da Silva
EL
Pandini
Juliana Almeida
JA
Cobas
Roberta Arnoldi
RA
Dias
Viviane Monteiro
VM
Sperandei
Sandro
S
Gomes
Marília de Brito
MB
D000273:Adipose Tissue / Q000033:anatomy & histology*; D000328:Adult; D015992:Body Mass Index; D016022:Case-Control Studies; D003922:Diabetes Mellitus, Type 1 / Q000503:physiopathology*; D017097:Electric Impedance; D005260:Female; D006801:Humans; D008297:Male; D009752:Nutritional Status / Q000502:physiology*; D015203:Reproducibility of Results; D012885:Skinfold Thickness