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Table 2 Inter-observer agreement subdivided by fracture type

From: Classification and treatment of proximal humerus fractures: inter-observer reliability and agreement across imaging modalities and experience

2 Part Neer Fractures

      
 

Classification

 

Treatment

   

Modality

Kappa Score

95% Confidence Interval

Strength of Agreement

Kappa Score

95% Confidence Interval

Strength of Agreement

Plain film X-ray

0.0358

(0.0000-0.0907)

slight

0.1494

(0.0959-0.2030)

slight

2D CT scan

0.0448

(0.0000-0.0977)

slight

0.2446

(0.1912-0.2980)

fair

3D reconstruction

0.0770

(0.0251-0.1290)

slight

0.1793

(0.1241-0.2344)

slight

3 Part Neer Fractures

      
 

Classification

 

Treatment

   

Modality

Kappa Score

95% Confidence Interval

Strength of Agreement

Kappa Score

95% Confidence Interval

Strength of Agreement

Plain film X-ray

0.0877

(0.0556-0.1198)

slight

0.3430

(0.3057-0.3802)

fair

2D CT scan

0.0524

(0.0000-0.0850)

slight

0.2860

(0.2492-0.3229)

fair

3D reconstruction

0.0960

(0.0640-0.1284)

slight

0.3579

(0.3222-0.3935)

fair

4 Part Neer Fractures

      
 

Classification

 

Treatment

   

Modality

Kappa Score

95% Confidence Interval

Strength of Agreement

Kappa Score

95% Confidence Interval

Strength of Agreement

Plain film X-ray

0.2600

(0.2105-0.3090)

fair

0.1697

(0.1481-0.2454)

slight

2D CT scan

0.4467

(0.3989-0.4946)

moderate

0.3368

(0.2857-0.3880)

fair

3D reconstruction

0.5743

(0.5225-0.6260)

moderate

0.0893

(0.0344-0.1441)

slight