Table 2.
Pairwise comparison of peripapillary vessel length density among different instruments and locations based on estimated marginal means using a general linear model.
| Pairs | Mean difference of VLD (mm−1) | P value |
|---|---|---|
| Spectralis vs Optovue | 1.98 | <0.001 |
| Spectralis vs Triton | −0.39 | 0.339 |
| Spetralis vs Cirrus | 3.66 | <0.001 |
| Optovue vs Triton | −2.37 | <0.001 |
| Optovue vs Cirrus | 1.68 | <0.001 |
| Triton vs Cirrus | 4.05 | <0.001 |
| Superior vs Nasal | −2.84 | <0.001 |
| Superior vs Inferior | 0.08 | 0.835 |
| Superior vs Temporal | −3.49 | <0.001 |
| Nasal vs Inferior | 2.92 | <0.001 |
| Nasal vs Temporal | −0.65 | 0.250 |
| Inferior vs Temporal | −3.57 | <0.001 |