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Table 7 Limits of agreement (LOA) of all different sampling strategies

From: Comparison of reader agreement, correlation with liver biopsy, and time-burden sampling strategies for liver proton density fat fraction measured using magnetic resonance imaging in patients with obesity: a secondary cross-sectional study

 

Reader 1, 1st time vs. Reader 1, 2nd time

Reader 1, 1st time vs. Reader 2

Sampling strategies at segmental level (S1‒S8)

 

Mean LOA

Maximum LOA

Minimum LOA

Proportion with LOA < 1.5%

Mean LOA

Maximum LOA

Minimum LOA

Proportion with LOA < 1.5%

1S-ROI

5.34

7.43

3.62

0%

5.77

8.08

4.32

0%

3S-ROI

3.66

4.69

3.07

0%

3.75

5.15

2.79

0%

1L-ROI

3.06

4.83

1.84

0%

3.37

5.11

2.59

0%

3L-ROI

1.90

3.15

1.01

22% (2/9)

2.35

2.83

1.86

0%

Sampling strategies at whole-liver level

 

LOA

LOA

4S-ROI

2.11

2.61

4L-ROI

1.55

1.88

9S-ROI

1.83

2.24

27S-ROI

1.21

1.39

9L-ROI

1.11

1.12

27L-ROI

0.65

0.82

  1. LOA refers to the highest absolute value of either side of the bound
  2. S-ROI Small region-of-interest, L-ROI large region-of-interest