OBJECTIVE: To evaluate fasting plasma glucose as a screening test for states of gestational diabetes. RESEARCH DESIGN AND METHODS: Baseline data of a cohort conducted in general prenatal care units in Brazil, enrolling 5,579 women aged > or = 20 years with gestational ages of 24-28 weeks at the time of testing and no previous diagnosis of diabetes. A standardized 2-h 75-g oral glucose tolerance test was performed in 5,010 women. Gestational diabetes and its subcategories--diabetes and impaired glucose tolerance--were defined according to the 1994 World Health Organization panel recommendations. We evaluated screening properties of calculated sensitivity and specificity for fasting plasma glucose with receiver operator characteristic curves. RESULTS: For detection of the subcategory diabetes, a fasting plasma glucose of 89 mg/dl jointly maximizes sensitivity (88%) and specificity (78%), identifying 22% of the women as test-positive. For detection of impaired glucose tolerance, a value of 85 mg/dl jointly maximizes sensitivity and specificity (68%), identifying as test-positive 35% of the women. Lowering the cut point to 81 mg/dl increases sensitivity to 81%, but decreases specificity to 54%, labeling as test-positive 49% of the women. CONCLUSIONS: Fasting plasma glucose is a useful test for the screening of both subcategories of gestational diabetes, a threshold of 85 mg/dl being an acceptable option. Effective screening for the subcategory diabetes can be achieved using a cut point of 89 mg/dl. If greater emphasis is placed on the detection of impaired glucose tolerance, a lower value, 81 mg/dl, may be needed.
OBJECTIVE: To evaluate fasting plasma glucose as a screening test for states of gestational diabetes. RESEARCH DESIGN AND METHODS: Baseline data of a cohort conducted in general prenatal care units in Brazil, enrolling 5,579 women aged > or = 20 years with gestational ages of 24-28 weeks at the time of testing and no previous diagnosis of diabetes. A standardized 2-h 75-g oral glucose tolerance test was performed in 5,010 women. Gestational diabetes and its subcategories--diabetes and impaired glucose tolerance--were defined according to the 1994 World Health Organization panel recommendations. We evaluated screening properties of calculated sensitivity and specificity for fasting plasma glucose with receiver operator characteristic curves. RESULTS: For detection of the subcategory diabetes, a fasting plasma glucose of 89 mg/dl jointly maximizes sensitivity (88%) and specificity (78%), identifying 22% of the women as test-positive. For detection of impaired glucose tolerance, a value of 85 mg/dl jointly maximizes sensitivity and specificity (68%), identifying as test-positive 35% of the women. Lowering the cut point to 81 mg/dl increases sensitivity to 81%, but decreases specificity to 54%, labeling as test-positive 49% of the women. CONCLUSIONS: Fasting plasma glucose is a useful test for the screening of both subcategories of gestational diabetes, a threshold of 85 mg/dl being an acceptable option. Effective screening for the subcategory diabetes can be achieved using a cut point of 89 mg/dl. If greater emphasis is placed on the detection of impaired glucose tolerance, a lower value, 81 mg/dl, may be needed.
Authors: Carlos Antonio Negrato; Renan M Montenegro; Rosiane Mattar; Lenita Zajdenverg; Rossana P V Francisco; Belmiro Gonçalves Pereira; Mauro Sancovski; Maria Regina Torloni; Sergio A Dib; Celeste E Viggiano; Airton Golbert; Elaine C D Moisés; Maria Isabel Favaro; Iracema M P Calderon; Sonia Fusaro; Valeria D D Piliakas; José Petronio L Dias; Marilia B Gomes; Lois Jovanovic Journal: Diabetol Metab Syndr Date: 2010-04-24 Impact factor: 3.320
Authors: Chang Liu; Lili Lu; Quan Kong; Yan Li; Haihua Wu; William Yang; Shandan Xu; Xinyu Yang; Xiaolei Song; Jack Y Yang; Mary Yang; Youping Deng Journal: BMC Bioinformatics Date: 2014-12-16 Impact factor: 3.169