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Table 2 Anthropometric and metabolic characteristics of participants by glucose tolerance categories.a

From: High prevalence of undiagnosed diabetes and abnormal glucose tolerance in the Iranian urban population: Tehran Lipid and Glucose Study

Variables NGT/NFG Isolated IFG Isolated IGT Combined IFG/IGT Undiagnosed diabetes Known diabetes
Men       
Age (years) 38.4 ± 1.01 43.7 ± 1.02† 50.4 ± 1.02† 53.7 ± 1.02† 54.2 ± 1.02† 56.1 ± 1.02†
BMI (kg/m2) 25.3 ± 0.1 26.3 ± 0.2† 27.0 ± 0.3† 27.4 ± 0.3† 28.0 ± 0.3† 26.6 ± 0.2†
WC (cm) 87.1 ± 0.2 90.0 ± 0.6† 91.7 ± 0.7† 93.1 ± 0.8† 94.4 ± 0.8† 91.0 ± 0.6†
SBP (mmHg) 119 ± 0.3 121 ± 0.9 125 ± 1.1† 128 ± 1.2† 131 ± 1.2† 126 ± 0.9†
DBP (mmHg) 76.9 ± 0.2 79.1 ± 0.6* 79.8 ± 0.7† 81.0 ± 0.8† 81.3 ± 0.8† 79.3 ± 0.6*
HDL-C (mmol/l) 1.0 ± 0.01 0.97 ± 0.01 0.99 ± 0.01 1.01 ± 0.01 0.98 ± 0.01 0.97 ± 0.01
TGs (mmmol/l) 1.61 ± 0.01 1.86 ± 0.01† 2.0 ± 0.01† 2.02 ± 0.01† 2.38 ± 0.01† 2.08 ± 0.01†
Women       
Age (year) 36.4 ± 1.01 44.7 ± 1.01† 45.4 ± 1.02† 48.8 ± 1.02† 51.1 ± 1.02† 54.0 ± 1.01†
BMI (kg/m2) 27.1 ± 0.1 28.8 ± 0.2† 28.3 ± 0.2† 29.4 ± 0.3† 29.4 ± 0.3† 27.7 ± 0.2
WC (cm) 86.2 ± 0.2 91.1 ± 0.6† 89.5 ± 0.5† 92 ± 0.7† 94.1 ± 0.7† 90.4 ± 0.5†
SBP (mmHg) 117 ± 0.3 121 ± 0.9* 122 ± 0.8† 126 ± 1.0† 128 ± 1.0 † 127 ± 0.8†
DBP (mmHg) 76.9 ± 0.2 79.3 ± 0.5† 80.4 ± 0.5† 80.5 ± 0.6† 82.1 ± 0.6† 79.7 ± 0.5†
HDL-C (mmHg) 1.18 ± 0.01 1.14 ± 0.01 1.14 ± 0.01 1.10 ± 0.01* 1.11 ± 0.01* 1.12 ± 0.01*
TGs (mmol/l) 1.43 ± 0.01 1.60 ± 0.01† 1.77 ± 0.01† 1.84 ± 0.01† 2.16 ± 0.01† 1.90 ± 0.01†
  1. a: According to the 2003 ADA classification.
  2. Data are means ± SEM (geometric mean ± SE for triglycerides).* p < 0.01, † p < 0.001: age-adjusted (except for age) comparison with combined normal glucose tolerance and normal fasting glucose (NGT/NFG). BMI: body mass index, DBP: diastolic blood pressure, HDL-C: high-density lipoprotein cholesterol, IFG: impaired fasting glucose, IGT: impaired glucose tolerance and IFG/IGT: combined impaired fasting glucose and impaired glucose tolerance, SBP: systolic blood pressure, TGs: triglycerides, WC: waist circumference.