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

Egyptian Journal of Radiology and Nuclear Medicine

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

Findings	Observer		K degree (95%CI)	p value	Percentage
Findings	A	B	K degree (95%CI)	p value	Percentage
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%

Inter-observer agreement: Inter-observer agreement between 2 emergency radiologists on the interpretation of images was measured using the kappa statistic
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
CI confidence interval