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Table 3 Inter-observer agreement subdivided by experience

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

Upper Extremity Specialists      
  Classification   Treatment  
Modality Kappa Score 95% Confidence Interval Strength of Agreement Kappa Score 95% Confidence Interval Strength of Agreement
Plain film X-ray 0.0315 (0.0000-0.0917) slight 0.1605 (0.0190-0.3020) slight
2D CT scan 0.233 (0.1096-0.3339) fair 0.4673 (0.3294-0.6052) moderate
3D reconstruction 0.3246 (0.1946-0.4546) fair 0.1832 (0.0333-0.3330) slight
General Orthopedists      
  Classification   Treatment  
Modality Kappa Score 95% Confidence Interval Strength of Agreement Kappa Score 95% Confidence Interval Strength of Agreement
Plain film X-ray 0.1079 (0.0467-.01691) slight 0.3883 (0.3213-0.4553) fair
2D CT scan 0.0351 (0.0000-0.0914) slight 0.46 (0.3945-0.5255) moderate
3D reconstruction 0.036 (0.0000-0.0980) slight 0.4069 (0.3405-0.4734) moderate
Senior Residents      
  Classification   Treatment  
Modality Kappa Score 95% Confidence Interval Strength of Agreement Kappa Score 95% Confidence Interval Strength of Agreement
Plain film X-ray 0.2184 (0.0760-0.3608) fair 0.4273 (0.2849-0.5697) moderate
2D CT scan 0.0597 (0.0000-0.2230) slight 0.2613 (0.1133-0.4094) fair
3D reconstruction 0.0364 (0.0000-0.1670) slight 0.368 (0.2154-0.5210) fair
Junior Residents      
  Classification   Treatment  
Modality Kappa Score 95% Confidence Interval Strength of Agreement Kappa Score 95% Confidence Interval Strength of Agreement
Plain film X-ray 0.0295 (0.0000-0.1807) slight 0.029 (0.0000-0.1701) slight
2D CT scan 0.1111 (0.0388-0.2610) slight 0.1288 (0.0397-0.2973) slight
3D reconstruction 0.1438 (0.0390-0.2915) slight 0.2284 (0.0738-0.3831) fair