Table 3.

Effect of age, SSI, 24-2 VF MD, and IOP on the repeatability of OCTA and OCT measurements for macular parameters

	Coefficient, 95% CI	R-squared, 95% CI	p value
wiVD
Age	−0.18 (−0.26, −0.11)	0.48 (0.37, 0.58)	<0.001
SSI	0.21 (0.15, 0.26)	0.35 (0.23, 0.46)	<0.001
24-2 VF MD	0.56 (0.00, 1.12)	0.08 (0.02, 0.18)	0.072
IOP	0.00 (−0.26, 0.25)	0.00 (0.00, 0.04)	0.975
pfVD
Age	−0.17 (−0.25, −0.09)	0.43 (0.32, 0.54)	<0.001
SSI	0.19 (0.13, 0.25)	0.29 (0.18, 0.41)	<0.001
24-2 VF MD	0.36 (−0.20, 0.92)	0.04 (0.00, 0.12)	0.228
IOP	−0.05 (−0.30, 0.20)	0.01 (0.00, 0.06)	0.681
wiGCC
Age	−0.28 (−0.54,−0.02)	0.70 (0.63, 0.76)	0.041
SSI	0.04 (0.00, 0.08)	0.02 (0.00, 0.08)	0.054
24-2 VF MD	2.85 (1.92, 3.78)	0.75 (0.69, 0.80)	<0.001
IOP	0.13 (−0.62, 0.87)	0.05 (0.00, 0.14)	0.743
pfGCC
Age	−0.28 (−0.56, −0.01)	0.72 (0.65, 0.78)	0.050
SSI	0.04 (0.01, 0.08)	0.02 (0.00, 0.09)	0.022
24-2 VF MD	2.65 (1.65, 3.65)	0.73 (0.67, 0.79)	<0.001
IOP	0.12 (−0.65, 0.89)	0.05 (0.00, 0.14)	0.765

CD = capillary density; CI = confidence interval; cp = circumpapillary; GCC = ganglion cell complex; IOP = intraocular pressure; MD = mean deviation; OCT = optical coherence tomography; OCTA = optical coherence tomography angiography; pf = parafoveal; SSI = signal strength index; VD = vessel density; VF = visual field; wi = whole image. Values are shown in β coefficient (95% confident interval). Negative coefficient demonstrates that reproducibility decreased with increasing the values of the putative factor. Statistically significant p value is shown in bold.