Table 1.

Number of cases identified by each observer for each spondylolisthesis type

	Spondylolisthesis type
	Type 1	Type 2	Type 3	Type 4	Type 5	Type 6	Type 7	Type 8
Observer 1	14	7	0	2	1	4	2	10
Observer 2	6	6	3	7	3	5	2	8
Observer 3	6	8	2	5	5	6	2	6
Observer 4	7	9	1	6	1	1	3	12
Observer 5	9	8	4	4	1	2	6	6
Observer 6	8	8	0	5	4	6	2	7