Table 6.
Initial and final retinal artery measurements in 2-year observation time in the DR and the control groups.
| Quadrants | Initial Visit | Final Visit |
p-Value Paired t-Test DR |
p-Value Paired t-Test Control | ||||
|---|---|---|---|---|---|---|---|---|
| M (±SD) DR |
M (±SD) Control |
p-Value t-Test |
M (±SD) DR |
M (±SD) Control |
p-Value t-Test |
|||
| LD (±SD) (µm) | 92.6 ± 18.7 | 95.9 ± 10.4 | 0.495 | 90.4 ± 13.5 | 95.9 ± 13.2 | 0.155 | 0.180 | 0.495 |
| VD (±SD) (µm) | 119.0 ± 17.4 | 120.0 ± 13.2 | 0.836 | 120.8 ± 17.2 | 120.5 ± 15.1 | 0.953 | 0.773 | 0.836 |
| WALL1 (±SD) (µm) | 14.5 *** ± 2.5 | 12.0 *** ± 1.9 | <0.001 † | 15.1 *** ± 2.3 | 12.3 *** ± 1.8 | <0.001 | 0.009 ‡ | <0.001 |
| WALL2 (±SD) (µm) | 14.6 *** ± 2.4 | 12.0 *** ± 1.5 | <0.001 † | 15.1 *** ± 2.3 | 12.6 *** ± 1.7 | <0.001 | 0.025 ‡ | <0.001 |
| WCSA (±SD) (μm2) | 4938 * ± 1358 | 4122 * ± 979 | 0.033 † | 5081 * ± 1254 | 4268 * ± 978 | 0.017 | 0.480 ‡ | 0.033 |
| WLR (±SD) | 0.342 *** ± 0.063 | 0.251 *** ± 0.015 | <0.001 † | 0.343 *** ± 0.048 | 0.262 *** ± 0.032 | <0.001 | 0.202 ‡ | <0.001 ‡ |
* p < 0.05; *** p < 0.001; † p-value Mann–Whitney test; ‡ p-value Wilcoxon signed rank test; M—mean; SD—standard deviation; LD—lumen diameter; VD—vessel diameter; WLR—wall-to-lumen ratio; WCSA—cross-sectional wall area.