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Table 2 Inter-observer agreement for the assessment of the presence of a brachial plexopathy, on a per-region basis, using conventional MRI alone

From: Diffusion-weighted MR neurography for the assessment of brachial plexopathy in oncological practice

 

Observer 1

Kappa = 0.45

95% CI = 0.33-0.56

  

1

2

3

4

5

 

Observer 2

1

541

13

9

16

25

604 (94.45)

2

0

3

3

0

0

6 (0.9%)

3

3

0

0

0

3

6 (0.9%)

4

3

0

0

3

0

6 (0.9%)

5

0

0

0

0

18

18 (2.8%)

  

547 (85.5%)

16 (2.5%)

12 (1.9%)

19 (3.0%)

46 (7.2%)

640

  1. Scoring: 1 = normal, 2 = probably normal, 3 = indeterminate (smooth thickening), 4 = probably abnormal (focal nodular thickening or mass in contact with the nerves), 5 = definitely abnormal (diffuse nodular thickening or mass encircling/obscuring the nerves).