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Table 1 Characterization of study subjects with normal glucose tolerance (NGT) and impaired glucose tolerance (IGT) a

From: Metabolic syndrome and the early detection of impaired glucose tolerance among professionals living in Beijing, China: a cross sectional study

  NGTb IGTc p-value
(n = 706) (n = 222)
Gender    0.0767
 Male (n = 403) 45.0 38.3  
 Female (n = 525) 55.0 61.7  
Age 45 ± 15 57 ± 15 <0.0001
Waist circumference (cm) 83 ± 10 89 ± 9 <0.0001
Fasting glucose level (mmol/l) 5.17 ± 0.51 5.57 ± 0.52 <0.0001
2-h Post loading glucose level (mmol/l) 6.15 ± 0.95 8.88 ± 0.92 <0.0001
Triglyceride (mmol/l) 1.50 ± 0.96 1.84 ± 1.02 <0.0001
HDL cholesterol (mmol/l) 1.34 ± 0.34 1.30 ± 0.33 0.1423
Weight (kg) 66 ± 13 67 ± 13 0.3205
Body mass index (kg/m2) 23.6 ± 3.6 24.8 ± 3.7 <0.0001
Systolic blood pressure (mmHg) 117 ± 15 126 ± 16 <0.0001
Diastolic blood pressure (mmHg) 78 ± 9 81 ± 10 0.0002
Family History of Diabetes 23.9 23.0 0.0868
Education (<12 years) 7.5 8.1 0.7689
MS NCEP criteria 25.5 58.1 <0.0001
MS IDF criteria 22.8 52.7 <0.0001
  1. aData are mean ± SD, or n(%). HDL: high density lipoprotein; MS: metabolic syndrome; NCEP: National Cholesterol Education Program; IDF: International Diabetes Federation. bNGT: glucose level at 2 hours post-glucose loading (2 hPG) <7.8 mmol/l; cIGT: impaired glucose tolerance.