Table 5.

Kappa statistics for interobserver variation (normal versus abnormal scan)

Parameter	Comparison between Observers	Kappa Score	Probability > Z
Peritoneal calcification	Observer 1 versus 2	0.66	0.00001
Observer 1 versus 3	0.75	0.00001
Observer 2 versus 3	0.54	0.00001
Bowel thickening	Observer 1 versus2	0.46	0.00001
Observer 1 versus 3	0.42	0.00001
Observer 2 versus 3	0.71	0.00001
Bowel tethering	Observer 1 versus 2	0.72	0.00001
Observer 1 versus3	0.57	0.00001
Observer 2 versus 3	0.57	0.00001
Loculations	Observer 1 versus 2	0.33	0.0009
Observer 1 versus 3	0.21	0.01
Observer 2 versus 3	0.40	0.00006
Peritoneal thickening	Observer 1 versus2	0.32	0.004
Observer 1 versus 3	0.27	0.008
Observer 2 versus 3	0.59	0.00001
Bowel dilatation	Observer 1 versus3	0.63	0.00001