Reliability of a Novel CBCT-Based 3D Classification System for Maxillary Canine Impactions in Orthodontics: The KPG Index

Table 1

Kappa coefficients for intrarater agreement between 𝑡₂ and 𝑡₃.

Observer	Kappa coefficient	Standard error
1	0.838	0.057
2	0.788	0.062
3	0.930	0.039
4	0.701	0.072
5	0.676	0.071
6	0.817	0.059
7	0.772	0.065
8	0.743	0.067
9	0.884	0.049