Table 2.
Quantitative OCT Angiography Summary Data
| FAZ Area (mm2) | FAZ Circle | PD 3-mm Circle | PD 3-mm Ring | VD 3-mm Circle (mm/mm2) | VD 3-mm Ring (mm/mm2) | PD 6-mm Circle | PD 6-mm Inner ring | PD 6-mm Outer ring | VD 6-mm Circle (mm/mm2) | VD 6-mm Inner Ring (mm/mm2) | VD 6-mm Outer Ring (mm/mm2) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MCI (N = 154) | ||||||||||||
| Mean | 0.23 | 0.62 | 0.36 | 0.30 | 19.90 | 20.98 | 0.43 | 0.42 | 0.45 | 17.68 | 17.63 | 17.97 |
| SD | 0.10 | 0.13 | 0.03 | 0.10 | 1.72 | 1.69 | 0.03 | 0.04 | 0.03 | 1.32 | 1.62 | 1.34 |
| Controls (N = 236) | ||||||||||||
| Mean | 0.25 | 0.66 | 0.36 | 0.39 | 20.15 | 21.24 | 0.44 | 0.43 | 0.45 | 17.91 | 17.90 | 18.24 |
| SD | 0.12 | 0.08 | 0.03 | 0.03 | 1.56 | 1.53 | 0.03 | 0.03 | 0.02 | 1.00 | 1.35 | 0.96 |
| P value∗ | 0.133 | 0.063 | 0.661 | <0.001 | 0.548 | 0.509 | 0.575 | 0.500 | 0.411 | 0.772 | 0.662 | 0.433 |
FAZ = foveal avascular zone; MCI = mild cognitive impairment; PD = perfusion density; SD = standard deviation; VD = vessel density.
∗
P value based on generalized estimating equations analysis of difference between means accounting for the correlation between eyes of the same subject, adjusted for age and sex.