Table 3 Pseudo-R2 values of logistic regression models for severe diabetic retinopathy based on retinal arteriolar, venular and capillary parameters.

From: Global Assessment of Retinal Arteriolar, Venular and Capillary Microcirculations Using Fundus Photographs and Optical Coherence Tomography Angiography in Diabetic Retinopathy

Arteriolar and venular (SIVA) parameters

Pseudo-R2 valuea for severe DR

p-valueb

Capillary (OCT-A) parameters

Pseudo-R2 valuea for severe DR

p-valueb

CRAE

0.215

0.005

SVP CDI

0.377

<0.001

CRVE

0.065

0.126

DVP CDI

0.084

0.085

AVR

0.063

0.161

SVP FDc

0.042

0.214

FDt

0.060

0.145

DVP FDc

0.069

0.110

FDa

0.083

0.081

   

FDv

0.033

0.273

   

All arteriolar and venular (SIVA) parameters combined

0.367

0.080

All capillary (OCT-A) parameters combined

0.651

<0.001

All arteriolar, venular and capillary parameters combined

0.725

0.002

  1. Abbreviations: SIVA = Singapore I Vessel Assessment; DR = diabetic retinopathy; OCT-A = optical coherence tomography angiography; CRAE = central retinal arteriolar equivalent; CRVE = central retinal venular equivalent; AVR = arteriole-venule ratio; FDt = total fractal dimension; FDa = arteriole fractal dimension; FDv = venule fractal dimension; SVP = superficial vascular plexus; CDI = capillary density index; DVP = deep vascular plexus; FDc = capillary fractal dimension.
  2. aMcKelvey and Zavoina’s pseudo-R2 value.
  3. bp-values from significance of model test.
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