Table 2.
Clinical Characteristics of Control Subjects (n = 12), Diabetic Subjects Without Signs of DR (n = 14), Patients With NPDR (n = 13), and Patients With PDR (n = 11)
| Control | Diabetic | NPDR | PDR | |
|---|---|---|---|---|
| Age (y), range | 48–66 | 49–68 | 46–65 | 47–69 |
| Age (y), mean ± SD | 56.5 ± 6.5 | 55.7 ± 5.9 | 55.6 ± 6.6 | 56.8 ± 7.1 |
| Female, n | 5 | 5 | 5 | 4 |
| Male, n | 7 | 9 | 8 | 7 |
| Type of diabetes (%) | ||||
| Type I | NA | 27 | 40 | 58 |
| Type II | NA | 73 | 60 | 42 |
| Diabetes duration (y), mean ± SD | NA | 6.5 ± 0.5 | 7.0 ± 0.7 | 8.0 ± 1.0 |
| Time from DR diagnosis (y), mean ± SD | NA | NA | 2.5 ± 0.3 | 2.9 ± 0.1 |
NA, not applicable.