Table 1.
Factor | Baseline N=996 | 4-Year N=891 | 10-Year N=784 | 14-Year N=654 | 25-Year N=426 |
---|---|---|---|---|---|
Mean age, year | 29 | 32 | 37 | 41 | 50 |
% Males | 49 | 49 | 49 | 50 | 48 |
Mean glycosylated hemoglobin A1, % | 10.8 | 10.1 | 10.0 | 9.5 | 8.1 |
Mean systolic blood pressure, mmHg | 124.6 | 123.2 | 126.1 | 126.8 | 132.8 |
Mean diastolic blood pressure, mmHg | 78.7 | 77.2 | 76.2 | 74.5 | 73.2 |
% Hypertension | 22 | 23 | 29 | 34 | 53 |
% Proteinuria | 21 | 23 | 27 | 23 | 26 |
% Education level, college graduate | 23 | 26 | 30 | 30 | 32 |
Mean Duncan’s Socioeconomic Index | 61 | 61 | 61 | 62 | 62 |
% Proliferative diabetic retinopathy | 23 | 28 | 41 | 43 | 48 |
% Macular edema | 10 | 13 | 21 | 23 | 24 |
% Photocoagulation* | 15 | 21 | 31 | 37 | 43 |
% Visual impairment | 8 | 10 | 9 | 8 | 7 |
Photocoagulation= panretinal, macular grid and/or focal photocoagulation;