Table 4 Summary of vascular tortuosity statistics across the four classes.

From: Integrating electrocardiogram and fundus images for early detection of cardiovascular diseases

Class

Minimum

Lower Quartile (Q1)

Median (Q2)

Upper Quartile (Q3)

Maximum

Class 1

1.0

1.25

1.50

1.75

2.0

Class 2

2.0

2.25

2.75

3.00

3.5

Class 3

1.0

1.25

1.50

2.00

2.5

Class 4

1.5

2.00

2.50

3.00

3.5