Feature

O1 vs. O2

(1 month interval)

(κ)

O2 vs. O3

(2 months interval)

(κ)

O3 vs. O1

(3 months interval)

(κ)

Intra-observer (κ) [15]

Intra-observer (κ) [16]

Shape

0.51

0.75

0.46

0.71

0.7 3

Orientation

0.65

0.71

0.56

0.83

0.68

Boundary

0.16

0.53

0.15

0.85

0.68

Echo pattern

0.98

0.70

0.69

0.67

0.65

Posterior acoustic features

0.98

0.69

0.67

0.82

0.64

Margin

0.95

0.56

0.56

0.59

0.64

Overall

0.77

(Substantial)

0.66

(Substantial)

0.56

(Moderate)

0.77

(Substantial)

0.74

(Substantial)