Table 1.
Subject Demographics
| Determinant | All Subjects |
|---|---|
| No. of subjects (no. of eyes) | 83 (154) |
| Age (y) | |
| Mean ± SD | 66.2 ± 8.9 |
| Range | 40–83 |
| Hypertension*, No. of subjects (%) | 63 (75.9%) |
| SBP (mm Hg), mean ± SD | 146.4 ± 24.5 |
| DBP (mm Hg), mean ± SD | 84.8 ± 12.1 |
| Diabetes†, no. of subjects (%) | 22 (26.5%) |
| HbA1c (%), mean ± SD | 6.30 ± 1.57 |
| Current smoker, no. subjects (%) | 10 (12.0%) |
| Hematocrit (%) | |
| Mean ± SD | 39.99 ± 4.36 |
| [Normal Low–Normal High] | [38.80–53.20] |
| Hemoglobin (g/dL) | |
| Mean ± SD | 12.93 ± 1.66 |
| [Normal Low–Normal High] | [13.30–17.70] |
| White blood cell count ×103/µL | |
| Mean ± SD | 6.21 ± 1.99 |
| [Normal Low–Normal High] | [4.00–10.90] |
| RBC count ×106/µL | |
| Mean ± SD | 4.55 ± .48 |
| [Normal Low–Normal High] | [3.80–5.20] |
| Platelet count ×102/µL | |
| Mean ± SD | 248.55 ± 54.5 |
| [Normal Low–Normal High] | [150.00–400.00] |
| Retinopathy‡, no. subjects (%) | 7 (8.4%) |
SD, standard deviation; SBP, systolic blood pressure; DBP, diastolic blood pressure.
*
Subjects were categorized as hypertensive if they were prescribed hypertension medication, endorsed a history of hypertension, or presented with a systolic blood pressure > 140 and/or diastolic blood pressure > 90.
†
Subjects were categorized as diabetic if they endorsed a history of diabetes mellitus or had a hemoglobin A1c value of 6.5% or greater.
‡
Subjects were designated as having retinopathy if medical records indicated a history of retinopathy or diabetic macular edema.