Correlation Analysis between Nerve Fiber Layer Thickness and Peripapillary Vessel Density and Influencing Factors of Peripapillary Vessel Density in Preclinical Diabetic Retinopathy

Table 5

Multiple regression analysis of peripheral blood flow density factors and systemic factors.

Variate	β	t		95% CI
Constant term	69.91	17.67	＜0.01	[61.84, 77.98]
Diabetes duration (year)	−0.33	−2.27	0.03	[−0.62, −0.03]
HbA1c (%)	−1.50	−2.83	＜0.01	[−2.58, −0.42]