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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.