Table 1. Characteristics of study population (n = 448).

	Mean ±SD or n (%)
Age, years	57.9 ±12.0
Male sex, n (%)	149 (33)
Inner Zone
Arteriolar Caliber (μm)	105.1 ±11.3
Venular Caliber (μm)	129.1 ±14.6
AV Ratio	0.82 ±0.11
Outer zone
Arteriolar Caliber (μm)	103.5 ±9.4
Venular Caliber (μm)	127.4 ±13.9
AV Ratio	0.82 ±0.11
Systolic blood pressure (mmHg)
At retinography	144.6 ±23.5
24-hours	132.1 ±16.6
Daytime	135.5 ±16.7
Nighttime	125.2 ±18.5
Diastolic blood pressure (mmHg)
At retinography	107.6 ±18.2
24-hours	77.9 ±11.8
Daytime	81.4 ±12.3
Nighttime	70.9 ±12.5