Table 1

Inter-observer reliability data based on surgeon experience.

Location of stenosis	Surgeon type	CCC	95% CI	p-value (vs. intermediate)	p-value (vs. senior)
Central canal	Junior	0.341 (0.041)	0.259 - 0.419	<0.001	<0.001
	Intermediate	0.645 (0.045)	0.548 - 0.725		0.068
	Senior	0.731 (0.036)	0.652 - 0.795
Foraminal	Junior	0.334 (0.044)	0.245 - 0.418	0.324	0.005
	Intermediate	0.368 (0.060)	0.244 - 0.479		0.036
	Senior	0.511 (0.052)	0.404 - 0.605
Lateral recess	Junior	0.410 (0.047)	0.315 - 0.498	0.007	0.001
	Intermediate	0.575 (0.048)	0.473 - 0.661		0.312
	Senior	0.608 (0.047)	0.507 - 0.692
Overall	Junior	0.362 (0.028)	0.306 - 0.416	0.002	<0.001
	Intermediate	0.485 (0.031)	0.422-0.544		0.004
	Senior	0.598 (0.029)	0.538 - 0.653