ABSTRACT
AIMS: To assess the frequency of metabolic syndrome in children and adolescents according to three international diagnostic criteria determining the level of agreement between these different criteria. METHODS: Waist circumference, blood pressure, blood glucose, high-density lipoprotein cholesterol, and serum triglycerides were evaluated in students from public schools of different regions of Divinópolis, MG, Brazil. Children and adolescents aged between 10 and 17 years were selected. Criteria adapted from the World Health Organization (WHO), National Cholesterol Education Program Adult Treatment Panel III (NCEP/ATPIII), and International Diabetes Federation (IDF) were used for the diagnosis of metabolic syndrome. The kappa coefficient was used to evaluate the level of agreement among the three criteria. RESULTS: The study evaluated 202 students (86 boys and 116 girls). The frequency of metabolic syndrome was 1.16% for boys and none of the girls presented with metabolic syndrome, according to WHO criteria. According to the NCEP/ATPIII and IDF criteria, metabolic syndrome was not detected in the studied sample. Low blood levels of high-density lipoprotein cholesterol was the most frequent metabolic alteration in all teenagers according to the NCEP/ATPIII and IDF criteria, while body mass index was the most frequent one according to WHO criteria. The level of agreement for one altered parameter was poor when comparing WHO and NCEP/ATP/III, moderate when comparing WHO and IDF and high when comparing the NCEP/ATP/III and IDF criteria. CONCLUSIONS: Significant differences between the frequencies of individual metabolic syndrome parameters were found in the studied sample of children and adolescents, depending on the criteria used. According to WHO criteria, metabolic syndrome was found at a low frequency and only in boys, while the NCEP/ATPIII and IDF criteria did not diagnose metabolic syndrome. The present findings suggest the need to reach a consensus on the cut-off points for risk factors and a single diagnostic definition of metabolic syndrome in children and adolescents.
Subject(s)
Humans , Adolescent , Metabolic Syndrome , ChildABSTRACT
Purpose: To establish cutoff points for the analysis of the Behavior Observation Form (BOF) of children in the ages of 2 to 23 months and evaluate the sensitivity and specificity by age group and domains (Emission, Reception, and Cognitive Aspects of Language). Methods: The sample consisted of 752 children who underwent BOF. Each child was classified as having appropriate language development for the age or having possible risk of language impairment. Performance Indicators (PI) were calculated in each domain as well as the overall PI in all domains. The values for sensitivity and specificity were also calculated. The cutoff points for possible risk of language impairment for each domain and each age group were obtained using the receiver operating characteristics curve. Results: The results of the study revealed that one-third of the assessed children have a risk of language impairment in the first two years of life. The analysis of BOF showed high sensitivity (>90%) in all categories and in all age groups; however, the chance of false-positive results was higher than 20% in the majority of aspects evaluated. It was possible to establish the cutoff points for all categories and age groups with good correlation between sensitivity and specificity, except for the age group of 2 to 6 months. Conclusion: This study provides important contributions to the discussion on the evaluation of the language development of children younger than 2 years. .
Objetivo: Estabelecer pontos de corte para análise do Protocolo de Observação de Comportamentos (POC) na faixa etária de 2 a 23 meses completos e avaliar a sensibilidade e a especificidade por faixa de idade e por domínios (Emissão, Recepção e Aspectos cognitivos da linguagem). Métodos: A casuística consistiu em 752 crianças que foram submetidas ao POC. Cada criança foi classificada com desenvolvimento da linguagem adequado para a idade ou com possível risco de alteração da linguagem. Foram calculados os Índices de desempenho (ID) em cada domínio e o ID geral. Também foram calculados os valores de sensibilidade e especificidade e, por meio da curva ROC, determinados os pontos de corte para possível risco de alteração de linguagem para cada domínio e faixas de idade. Resultados: Os resultados do estudo revelaram que um terço das crianças avaliadas apresenta risco de alteração de linguagem nos dois primeiros anos de vida. A análise do POC revelou alta sensibilidade (>90%) em todas as categorias e em todas as faixas de idade, contudo a chance de resultados falso-positivos foi superior a 20% na maioria dos aspectos avaliados. Foi possível estabelecer os pontos de corte para todas as categorias e faixas de idade com boa correlação entre sensibilidade e especificidade, exceto para a faixa etária de 2 a 6 meses. Conclusão: O presente estudo traz contribuições importantes para a discussão sobre a avaliação do desenvolvimento de linguagem de crianças menores que 2 anos. .