Table 2.
Results of static vessel analysis.
| Baseline | Follow-Up | P | |||
|---|---|---|---|---|---|
| Mean | 95% CI | Mean | 95% CI | ||
| CRAE | |||||
| Controls | 187.6 | 178.0–197.2 | 187.9 | 178.2–197.6 | .882 |
| Mild-moderate | .464 | ||||
| CPAP | 177.6 | 165.8–189.4 | 179.1 | 166.9–191.4 | |
| Non-CPAP | 178.0 | 171.4–184.7 | 177.6 | 170.6–184.5 | |
| Severe | .012 | ||||
| CPAP | 171.2 | 164.7–177.7 | 174.0 | 166.6–181.3 | |
| Non-CPAP | 171.3 | 165.1–177.6 | 165.1 | 158.0–172.2 | |
| CRVE | |||||
| Controls | 223.2 | 204.7–241.7 | 219.6 | 200.0–239.2 | .200 |
| Mild-Moderate | .492 | ||||
| CPAP | 208.7 | 197.5–219.9 | 206.7 | 195.5–217.9 | |
| Non-CPAP | 209.8 | 203.4–216.1 | 210.4 | 204.1–216.8 | |
| Severe | .475 | ||||
| CPAP | 206.8 | 194.9–218.8 | 205.2 | 193.9–216.5 | |
| Non-CPAP | 205.9 | 194.4–217.4 | 201.9 | 191.1–212.8 | |
| AVR | |||||
| Controls | 0.812 | 0.773–0.851 | 0.840 | 0.784–0.896 | .053 |
| Mild-Moderate | .374 | ||||
| CPAP | 0.859 | 0.810–0.908 | 0.869 | 0.824–0.914 | |
| Non-CPAP | 0.848 | 0.820–0.875 | 0.844 | 0.818–0.869 | |
| Severe | .031 | ||||
| CPAP | 0.837 | 0.787–0.886 | 0.855 | 0.810–0.899 | |
| Non-CPAP | 0.836 | 0.789–0.884 | 0.821 | 0.778–0.864 | |
Two-way mixed analysis of variance model comparing the effect of CPAP vs no CPAP on static retinal vascular parameters. Values not adjusted for confounding factors. All results in micrometers. AVR = arterio-venous ratio, CI = confidence interval, CPAP = continuous positive airway pressure, CRAE = central retinal arterial equivalent, CRVE = central retinal venous equivalent.