Table 2—

Sex-adjusted prevalence (%), number of incident cases of diabetes per person-years (pyrs) of follow-up, sex-adjusted incidence rates of type 2 diabetes in the three time periods, and sex-adjusted incidence rate ratios in the second (IRR2) and third (IRR3) periods relative to the first

Age1965–1977
1978–1990
1991–2003
PrevalenceCases/pyrsIncidence rate*PrevalenceCases/pyrsIncidence rate*IRR2PrevalenceCases/pyrsIncidence rate*IRR3
5–140.34/6,8330.5 (0–1.2)0.57/4,2471.6 (0.4–2.8)2.8 (0.8–9.6)3.314/4,2173.3 (1.6–5.1)5.7 (1.9–17.4)
15–243.343/5,4848.1 (5.6–10.7)4.451/5,8558.6 (6.1–11.0)1.1 (0.7–1.6)6.449/5,2599.4 (6.7–12.1)1.1 (0.7–1.7)
25–3418.988/2,35237.7 (29.5–46.0)19.488/3,30625.1 (19.5–30.7)0.7 (0.5–0.9)22.294/4,15922.6 (18.0–27.3)0.6 (0.4–0.8)
35–4445.2101/1,79656.8 (45.4–68.2)44.066/1,43746.7 (34.9–58.4)0.8 (0.6–1.1)31.9118/2,61043.4 (35.2–51.5)0.7 (0.6–1.01)
45–5455.461/1,10954.4 (40.7–68.1)65.743/84349.8 (34.4–65.3)0.9 (0.6–1.4)48.049/98249.8 (35.9–63.7)0.9 (0.6–1.3)
55–6456.433/63954.2 (35.6–73.0)70.028/49555.6 (45.0–76.2)1.0 (0.6–1.7)57.725/35270.8 (42.6–98.9)1.3 (0.8–2.2)
≥6549.221/91223.5 (12.7–34.4)54.614/30845.4 (21.6–69.2)1.9 (0.9–3.9)33.38/17943.4 (13.3–73.5)1.8 (0.8–4.2)
  • Data are percentages, incidence rates (95% CIs), or IRRs (95% CIs) unless otherwise indicated.

  • *

    * Cases/1,000 pyrs.