Table 2 Pairwise comparison of peripapillary vessel length density among different instruments and locations based on estimated marginal means using a general linear model.

From: Repeatability and Reproducibility of Quantification of Superficial Peri-papillary Capillaries by four Different Optical Coherence Tomography Angiography Devices

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