Table 3.

Intraobserver reliability of the different classification systems

Classification	Rater 1	Rater 2	Rater 3
AO	0.81 [0.74;0.88]	0.81 [0.74;0.88]	0.85 [0.78;0.92]
Weber	0.86 [0.78;0.95]	0.93 [0.87;0.99]	0.91 [0.85;0.98]
Herscovici	0.61 [0.52;0.71]	0.64[0.55;0.73]	0.59 [0.50;0.69]
Haraguchi	0.72 [0.63;0.80]	0.74 [0.66;0.83]	0.77 [0.69;0.85]
Bartoníček	0.79 [0.72;0.87]	0.76 [0.68;0.84]	0.81 [0.74;0.88]
Mason	0.63 [0.54;0.72]	0.64 [0.55;0.74]	0.65 [0.56;0.75]

Illustrated are the kappa values with 95% CI of the three different raters