Table 2. Results of the inter-observer Fleiss kappa test.

Classification	First evaluation	Second evaluation	First evaluation + second evaluation
Neer	0.724 (Substantial)	0.759 (Substantial)	0.669 (Substantial)
AO	0.490 (Moderate)	0.772 (Substantial)	0.715 (Substantial)
AO/OTA	0.599 (Moderate)	0.858 (Practically perfect)	0.780 (Substantial)