Table 5.

Intraobserver agreement between the artificial intelligence (AI) model and two orthodontists (E.B. and N.M.)

Observer	Six-class CVM classification		Three-class CVM classification
E.B. & N.M.	Kappa	0.50	Kappa	0.59
	Weighted-kappa	0.70	Weighted-kappa	0.66
	Percentage agreement	60.60%	Percentage agreement	73.73%
AI & N.M.	Kappa	0.40	Kappa	0.47
	Weighted-kappa	0.65	Weighted-kappa	0.61
	Percentage agreement	53.53%	Percentage agreement	68.68%
AI & E.B.	Kappa	0.34	Kappa	0.40
	Weighted-kappa	0.59	Weighted-kappa	0.53
	Percentage agreement	48.48%	Percentage agreement	59.59%

CVM, cervical vertebral maturation.