TABLE 2

Diabetes-specific clinical data

Disease duration (years)20.3 ± 3.6
Current A1C (%)7.8 ± 1.3 (5.5–11.3)
Lifetime average A1C (%)8 ± 1.2 (5.5–12.1)
Age of onset (years)
    <711 (13.4)
    7–1125 (30.5)
    12–1632 (39)
    17–219 (11)
    22–255 (6.1)
Number of severe hypoglycemic episodes*
    031 (37.8)
    114 (17.1)
    212 (14.6)
    33 (3.7)
    43 (3.7)
    56 (7.3)
    83 (3.7)
    105 (6.1)
    115 (6.1)
Retinopathy level
    No retinopathy28 (35.4)
    Mild nonproliferative retinopathy27 (34.2)
    Moderate nonproliferative retinopathy13 (16.4)
    Proliferative retinopathy without high-risk characteristics5 (6.3)
    Proliferative retinopathy with high-risk characteristics6 (7.7)
  • Data are means ± SD (range) or n (%).

  • *

    * Percentages do not total 100% because of a rounding error.

  • Data for three patients were unavailable.

  • High-risk proliferative diabetic retinopathy refers to neovascularization of the optic disc one-fourth to one-third of a disc diameter in size and neovascularization elsewhere with any vitreous hemorrhage.