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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.