Table 1.
Patient characteristics
| a Patients who developed incident PDR compared to patients who were PDR free at the end of follow-up | |||
|---|---|---|---|
| Incident PDR (n = 161) | No PDR at end of follow-up (n = 183) | p | |
| Age, years | 25.8 ± 6.9 | 24.8 ± 8.1 | 0.1992 |
| Duration, years | 17.0 ± 6.3 | 16.3 ± 7.1 | 0.7675 |
| Male/female, n | 79/82 | 92/91 | 0.9132 |
| GHb, % | 10.7 ± 1.9 | 9.9 ± 1.7 | <0.0001 |
| Prevalence of HTN, n | 15 (9.3) | 7 (3.8) | 0.0435 |
| Total cholesterol, mg/dl | 190 ± 40.0 | 173.3 ± 32.5 | <0.0001 |
| HDL cholesterol, mg/dl | 54.7 ± 12.1 | 55.3 ± 12.0 | 0.6155 |
| LDL cholesterol, mg/dl | 114.3 ± 31.4 | 102.2 ± 26.6 | 0.0004 |
| Triglycerides, mg/dl | 106.6 ± 87.0 | 81.1 ± 50.1 | 0.0012 |
| BMI | 23.7 ± 3.0 | 22.9 ± 3.4 | 0.0466 |
| Ever smoker, n | 46 (28.8) | 61 (34.7) | 0.1602 |
| b Patients who had PDR at baseline compared to patients who were PDR free at baseline | |||
|---|---|---|---|
| Prevalent PDR (n = 142) | No PDR at baseline (n = 183) | p | |
| Age, years | 37.2 ± 5.8 | 24.8 ± 8.1 | <0.0001 |
| Duration, years | 25.1 ± 6.1 | 16.3 ± 7.1 | <0.0001 |
| Male/female, n | 79/63 | 92/91 | 0.4562 |
| GHb, % | 10.3 ± 1.8 | 9.9 ± 1.7 | 0.0020 |
| Prevalence of HTN, % | 35.9 | 3.8 | <0.0001 |
| Total cholesterol, mg/dl | 204.9 ± 45.3 | 173.3 ± 32.5 | 0.0001 |
| HDL cholesterol, mg/dl | 51.7 ± 11.3 | 55.3 ± 12.0 | 0.0058 |
| LDL cholesterol, mg/dl | 128.9 ± 38.0 | 102.2 ± 26.6 | <0.0001 |
| Triglycerides, mg/dl | 120.8 ± 71.2 | 81.1 ± 50.1 | <0.0001 |
| BMI | 24.2 ± 3.3 | 22.9 ± 3.4 | 0.0051 |
| Ever smoker, n | 66 (47.5) | 61 (34.7) | 0.9456 |
| c All patients who developed PDR (incident and prevalent) compared to patients who were PDR free at the end of follow-up | |||
|---|---|---|---|
| Any PDR (n = 306) | No PDR (n = 185) | p | |
| Age, years | 29.0 ± 7.3 | 24.7 ± 7.9 | <0.375 |
| Duration, years | 20.8 ± 7.8 | 16.2 ± 7.0 | <0.009 |
| Male/female, n | 159/147 | 94/91 | 0.456 |
| GHb, % | 10.5 ± 1.8 | 9.9 ± 1.7 | <0.001 |
| Prevalence of HTN, n | 68 (90.7) | 7 (9.3) | <0.001 |
| Total cholesterol, mg/dl | 204.9 ± 45.3 | 173.6 ± 32.5 | <0.001 |
| HDL cholesterol, mg/dl | 53.4 ± 12.1 | 55.2 ± 11.9 | 0.145 |
| LDL cholesterol, mg/dl | 120.9 ± 35.2 | 102.5 ± 26.7 | <0.001 |
| Triglycerides, mg/dl | 113.2 ± 79.5 | 81.7 ± 50.0 | <0.001 |
| BMI | 23.9 ± 3.1 | 22.9 ± 3.4 | 0.016 |
| Ever smoker, n | 113 (64.6) | 62 (35.4) | 0.434 |
Values denote means ± SD unless otherwise specified. Figures in parentheses are percentages.