Table 3.
Vascular density measurements by age groups.
| OCTA Parameter | Vascular Density (%) | p-Value a | p-Value b | ||||||
|---|---|---|---|---|---|---|---|---|---|
| G1 | G2 | G3 | G4 | Total | G1 vs. G2 | G1 vs. G3 | G1 vs. G4 | ||
| SCP | |||||||||
| center | 21.22 ± 4.86 | 20.53 ± 3.09 | 18.46 ± 4.65 | 16.20 ± 3.28 | 19.39 ± 4.58 | <0.001 | 0.934 | 0.090 | <0.001 |
| parafovea | 48.54 ± 1.92 | 48.56 ± 2.25 | 46.57 ± 1.97 | 47.08 ± 1.81 | 47.81 ± 2.13 | <0.001 | 1.000 | 0.030 | 0.037 |
| DCP | |||||||||
| center | 17.94 ± 4.04 | 17.63 ± 3.97 | 15.33 ± 4.18 | 14.36 ± 3.80 | 16.54 ± 4.23 | <0.001 | 0.992 | 0.096 | 0.007 |
| parafovea | 51.72 ± 2.89 | 50.53 ± 2.36 | 48.24 ± 3.68 | 48.96 ± 2.76 | 50.14 ± 3.22 | <0.001 | 0.476 | <0.001 | 0.004 |
| CCP | |||||||||
| center | 63.80 ± 5.06 | 60.76 ± 3.55 | 59.75 ± 6.73 | 53.02 ± 7.38 | 59.94 ± 6.99 | <0.001 | 0.241 | 0.064 | <0.001 |
| parafovea | 64.44 ± 4.04 | 61.98 ± 2.41 | 61.47 ± 3.58 | 57.95 ± 2.99 | 61.88 ± 4.18 | <0.001 | 0.057 | 0.014 | <0.001 |
ap-values derived using One-way analysis of variance; bp-values derived using Tukey post hoc test; G1, age 5 to 19 years; G2, age 20 to 39 years; G3, age 40 to 59; G4, age 60 to 80 years; parafovea means the average of the superior, temporal, inferior, and nasal sectors of the outer ring of the Early Treatment Diabetic Retinopathy Study (ETDRS) grid; SCP; superficial capillary plexus, DCP; deep capillary plexus, CCP; choriocapillaris.