TABLE 1

Incidence of DN in siblings of probands with type 1 diabetes per 1,000 person-years in each 5-year time band since the onset of diabetes according to sex

Duration of diabetes (years)Men
Women
Men-to-women rate ratio
Person-yearsCases (n)Incidence (95% CI)Person-yearsCases (n)Incidence (95% CI)
0–41,630.010.6 (0.02–3.4)1,288.810.8 (0.02–4.3)0.8
5–91,460.6128.2 (4.2–14.4)1,163.197.7 (3.5–14.7)1.1
10–141,179.02823.7 (15.8–34.3)941.11212.7 (6.6–22.3)1.9
15–19811.42429.6 (19.0–44.0)703.01724.2 (14.1–38.7)1.2
20–24510.52141.1 (25.5–62.9)440.8715.9 (6.4–32.7)2.6
25–29235.7833.9 (14.7–66.9)250.2416.0 (4.4–40.9)2.1
30–3470.7228.3 (3.4–102.2)91.4110.9 (0.3–61.0)2.6