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Table 9 Inter-observer agreement between observer A and B for findings in CT

From: Multi-detector computed tomography in traumatic abdominal lesions: value and radiation control

Findings Observer K degree (95%CI) p value Percentage
A B
Liver injury      
 Grade II Grade III 15
14
14
14
0.91 (0.79–1)  < 0.001 93.8%
 Grade IV 3 4    
Splenic injury      
 Grade II 8 7    
 Grade III 23 23 0.89 (0.78–1)  < 0.001 92.5%
 Grade IV 9 9    
 Grade V 0 1    
Renal injury      
 Grade I 2 2    
 Grade II 7 7 1 (1–1)  < 0.001 100%
 Grade III 5 5    
 Grade IV 6 6    
Pancreatic injury      
 Grade II Grade III 6
1
5
2
0.60 (0.09–1) 0.03 85.7%
 Intestinal injury 2 2 1 (1–1)  < 0.001 100%
 Adrenal injury 1 1 1 (1–1)  < 0.001 100%
 Pneumothorax 24 24 1 (1–1)  < 0.001 100%
 Pleural collection 27 27 1 (1–1)  < 0.001 100%
 Lung contusion 21 21 1 (1–1)  < 0.001 100%
 Rib fracture 18 18 1 (1–1)  < 0.001 100%
  1. Inter-observer agreement: Inter-observer agreement between 2 emergency radiologists on the interpretation of images was measured using the kappa statistic
  2. Kappa values: < 0 = no agreement, 0.0–0.20 = slight agreement, 0.21–0.40 = fair agreement, 0.41–0.60 = moderate agreement, 0.61–0.80 = good agreement, and 0.81–1.00 = very good agreement
  3. CI confidence interval