Table 2. Intra-rater agreement for the 8-group geometric classification: 3 evaluators.

	Agreement	Kappa	95% CI
Rater 1	58.33%	0.521	0.413–0.629
Rater 2	52.08%	0.443	0.334–0.553
Rater 3	70.8%	0.648	0.525–0.771