Table 1. Results of the intra-observer Fleiss Kappa test.

Classification	Evaluator 1	Evaluator 2	Evaluator 3	Evaluator 4
Neer	0.790 (Substantial)	0.771 (Substantial)	0.844 (Practically perfect)	0.737 (Substantial)
AO	0.730 (Substantial)	0.769 (Substantial)	0.813 (Practically perfect)	0.694 (Substantial)
AO/OTA	0.341 (Poor correlation)	0.760 (Substantial)	0.811 (Practically perfect)	0.706 (Substantial)