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Table 1 Age and gender wise prevalence of different glucose intolerance categories among Tehranian adults.

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

Age group (years)

Study Population (n)

Isolated IFG (%)

Isolated IGT (%)

IFG/IGT (%)

Undiagnosed Diabetes (%)

Known Diabetes (%)

Men

      

20–29

694

5.1

1.0

0.7

0.8

1.1

30–39

1054

9.8

4.4

1.7

1.6

2.8

40–49

775

11.1

6.9

4.6

5.2

6.9

50–59

605

11.2

7.0

7.3

9.3

14.7

60–69

637

8.5

8.2

9.4

8.6

20.3

≥ 70

241

7.1

11.7

6.2

14.9

19.1

Un-standardized

4006

9.1(8.2–10.0)

5.8 (5.1–6.5)

4.6 (4.0–5.2)

5.1 (4.4–5.8)

9.0 (8.1–9.9)

Age-standardizeda

4006

8.7 (7.8–9.6)

5.4 (4.7–6.1)

4.0 (3.4–4.6)

5.1 (4.4–5.8)

8.1 (7.3–8.9)

Women

      

20–29

1171

3.4

2.7

0.9

0.4

0.7

30–39

1464

5.4

6.9

2.6

2.1

3.0

40–49

1131

7.8

9.7

6.0

6.9

8.7

50–59

926

9.4

9.9

7.3

8.4

17.5

60–69

664

9.1

9.6

7.6

9.8

25.4

≥ 70

127

4.9

12.5

7.4

6.1

27.2

Un-standardized

5483

6.6 (5.9–7.3)

7.6 (6.9–8.3)

4.6 (4.0–5.2)

4.9 (4.3–5.5)

9.4 (8.6–10.2)

Age-standardizeda

5483

6.3 (5.7–6.9)

7.6 (6.9–8.3)

4.5 (4.0–5.0)

4.7 (4.1–5.3)

10 (9.2–10.8)

Total (95%CI)

      

Un-standardized

9489

7.7 (7.2–8.2)

6.8 (6.3–7.3)

4.6 (4.2–5.0)

5.0 (4.6–5.4)

9.2 (8.6–9.8)

Age-standardizeda

9489

7.3 (6.8–7.8)

6.7 (6.2–7.2)

4.2 (3.8–4.6)

4.9 (4.5–5.3)

9.1 (8.5–9.7)

  1. IFG: impaired fasting glucose, IFG/IGT: combined impaired fasting glucose and impaired glucose tolerance, IGT: impaired glucose tolerance, NGT: normal glucose tolerance.
  2. a: age-standardization is based on world population 2000.