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Use of hemoglobin A1C to detect Haitian-Americans with undiagnosed Type 2 diabetes / Utilização de hemoglobina A1C no rastreamento de haitianos americanos com diabetes tipo 2 não diagnosticado
Exebio, Joel C.; Zarini, Gustavo G.; Vaccaro, Joan A.; Exebio, Cristobal; Huffman, Fatma G..
  • Exebio, Joel C.; Florida International University. Department of Dietetics and Nutrition. Miami. US
  • Zarini, Gustavo G.; Florida International University. Department of Dietetics and Nutrition. Miami. US
  • Vaccaro, Joan A.; Florida International University. Department of Dietetics and Nutrition. Miami. US
  • Exebio, Cristobal; Universidad Privada Antenor Orrego. Department of Biostatistics. Trujillo. PE
  • Huffman, Fatma G.; Florida International University. Department of Dietetics and Nutrition. Miami. US
Arq. bras. endocrinol. metab ; 56(7): 449-455, Oct. 2012. ilus, tab
Article in English | LILACS | ID: lil-654274
ABSTRACT

OBJECTIVE:

To evaluate the validity of hemoglobin A1C (A1C) as a diagnostic tool for type 2 diabetes and to determine the most appropriate A1C cutoff point for diagnosis in a sample of Haitian-Americans. SUBJECTS AND

METHODS:

Subjects (n = 128) were recruited from Miami-Dade and Broward counties, FL. Receiver operating characteristics (ROC) analysis was run in order to measure sensitivity and specificity of A1C for detecting diabetes at different cutoff points.

RESULTS:

The area under the ROC curve was 0.86 using fasting plasma glucose ≥ 7.0 mmol/L as the gold standard. An A1C cutoff point of 6.26% had sensitivity of 80% and specificity of 74%, whereas an A1C cutoff point of 6.50% (recommended by the American Diabetes Association - ADA) had sensitivity of 73% and specificity of 89%.

CONCLUSIONS:

A1C is a reliable alternative to fasting plasma glucose in detecting diabetes in this sample of Haitian-Americans. A cutoff point of 6.26% was the optimum value to detect type 2 diabetes.
RESUMO

OBJETIVO:

Avaliar a validade da hemoglobina A1C (A1C) como ferramenta para o diagnóstico de diabetes tipo 2 e determinar o ponto de corte mais apropriado para a A1C no diagnóstico de uma amostra de haitianos americanos. SUJEITOS E

MÉTODOS:

Os sujeitos (n = 128) foram recrutados dos condados de Miami-Dade e Broward na Flórida. A análise ROC (Receiver operating characteristics) foi feita de forma a medir a sensibilidade e especificidade de A1C para a detecção do diabetes em diferentes pontos de corte.

RESULTADOS:

A área sob a curva ROC foi 0,86 usando a glicemia de jejum ≥ 7,0 mmol/L como padrão-ouro. O ponto de corte de 6,26% para a A1C apresentou sensibilidade de 80% e especificidade de 74%, enquanto o ponto de corte de 6,50% (recomendado pela American Diabetes Association - ADA) apresentou uma sensibilidade de 73% e especificidade de 89%.

CONCLUSÕES:

A A1C foi uma alternativa confiável para a glicemia de jejum na detecção do diabetes nesta amostra de haitianos americanos. Um ponto de corte de 6,26% foi o valor ótimo para a detecção do diabetes tipo 2.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Blood Glucose / Glycated Hemoglobin Type of study: Diagnostic study / Prognostic study / Screening study Limits: Adult / Female / Humans / Male Country/Region as subject: North America / Caribbean / Haiti Language: English Journal: Arq. bras. endocrinol. metab Journal subject: Endocrinology / Metabolism Year: 2012 Type: Article Affiliation country: Peru / United States Institution/Affiliation country: Florida International University/US / Universidad Privada Antenor Orrego/PE

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Full text: Available Index: LILACS (Americas) Main subject: Blood Glucose / Glycated Hemoglobin Type of study: Diagnostic study / Prognostic study / Screening study Limits: Adult / Female / Humans / Male Country/Region as subject: North America / Caribbean / Haiti Language: English Journal: Arq. bras. endocrinol. metab Journal subject: Endocrinology / Metabolism Year: 2012 Type: Article Affiliation country: Peru / United States Institution/Affiliation country: Florida International University/US / Universidad Privada Antenor Orrego/PE