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Table 3 Inter-observer agreement for the assessment of the presence of a brachial plexopathy, on a per-region basis, using a combination of conventional MRI and DW-MRN

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

 

Observer 1

Kappa = 0.59

95% CI = 0.49-0.68

  

1

2

3

4

5

 

Observer 2

1

545

7

8

6

25

591(92.3%)

2

0

0

0

0

0

0 (0%)

3

1

0

0

0

0

1 (0.2%)

4

1

0

0

0

0

1 (0.2%)

5

3

6

3

1

34

47.7 (7.3%)

  

550 (85.9%)

13 (2.0%)

11 (1.7%)

7 (1.1%)

59 (9.2%)

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).