Table 3.

Generalized estimating equation analysis of the association between macular vascular geometric parameters and age.

	Age
	β	CI		p
		Lower	Upper
Fractal dimension, D f
Whole	−9.812E−4	−1.276E−3	−6.873E−4	<0.001**
Inner ring	−2.069E−3	−2.781E−3	−1.357E−3	<0.001**
Outer ring	−7.904E−4	−1.043E−3	−5.372E−4	<0.001**
Vessel area rate, VAR
Whole	−6.179E−5	−7.804E−5	−4.555E−5	<0.001**
Inner ring	−1.299E−5	−1.772E−5	−8.264E−5	<0.001**
Outer ring	−4.873E−5	−6.195E−5	−3.551E−5	<0.001**
Average vessel diameter, D m
Whole	−2.710E−4	−3.741E−4	−1.693E−4	<0.001**
Inner ring	−2.652E−4	−3.861E−4	−1.440E−4	<0.001**
Outer ring	−2.684E−4	−3.812E−4	−1.562E−4	<0.001**
Tortuosity, τn
Whole	7.202E−4	−6.023E−4	2.042E−3	0.286
Inner ring	3.764E−4	−2.734E−3	1.981E−3	0.754
Outer ring	5.203E−4	−7.752E−4	1.815E−3	0.432

p-value was based on GEE analysis using an exchangeable correlation structure for the difference between means, accounting for the correlation between eyes of the same participant.

CI, 95% Walder confidence interval;

^**p <0.01, bold.